Iranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Mononuclear and Dinuclear Copper(II) Complexes Containing N, O and S Donor Ligands: Synthesis, Characterization, Crystal Structure Determination and Antimicrobial Activity of [Cu(phen)(tda)].2H2O and [(phen)2Cu(µ-tda)Cu(phen)](ClO4)2.1.5H2O1131178810.30492/ijcce.2014.11788ENAbolfazl AbbaszadehDepartment of Chemistry, Shahid Beheshti University, P.O. Box 1983963113 Tehran, I.R. IRANNasser SafariDepartment of Chemistry, Shahid Beheshti University, P.O. Box 1983963113 Tehran, I.R. IRANVahid AmaniDepartment of Chemistry, Shahid Beheshti University, P.O. Box 1983963113 Tehran, I.R. IRANBehrouz NotashDepartment of Chemistry, Shahid Beheshti University, P.O. Box 1983963113 Tehran, I.R. IRANFereshteh RaeiDepartment of Microbiology, Faculty of Biological Sciences, Shahid Beheshti University, P.O. Box 1983963113 Tehran, I.R. IRANFereshteh EftekharDepartment of Microbiology, Faculty of Biological Sciences, Shahid Beheshti University, P.O. Box 1983963113 Tehran, I.R. IRANJournal Article20130525<em>Copper complexes of [Cu(phen)(tda)].2H<sub>2</sub>O(1) and [(phen)<sub>2</sub>Cu(µ-tda) Cu(phen)](ClO<sub>4</sub>)<sub>2</sub>.1.5H<sub>2</sub>O (2) (where phen is 1,10-phenanthroline and tda<sup>2-</sup> is thiodiacetate) have been synthesized. Both complexes were characterized by elemental analysis, IR, UV–Vis spectroscopy and cyclic </em><em>voltammetry</em><em>. Their solid state structures were determined by the single crystal X-Ray Diffraction method. Complex 1 is mononuclear and copper has accepted a five-coordinated square-based pyramidal structure with the tda<sup>2-</sup></em> <em>anion facially coordinated to copper(II). Complex 2 has accepted an unsymmetrical square pyramidal coordination of two distinct copper complexes, one containing two phenanthroline and the other containing one phenanthroline and one tda<sup>2</sup></em><sup>-</sup><em>, bridged by a carboxylate oxygen.</em><em> The strong biological activity of these compounds against </em><em>six reference bacterial included Bacillus subtilis (ATCC 465), Enterococcus faecalis (ATCC 29737), Staphylococcus aureus (ATCC 25923), Escherichia coli (ATCC 25922), Klebsiella pneumoniae (ATCC 10031), and Pseudomonas aeruginosa (ATCC 85327) </em><em>were investigated.</em> https://ijcce.ac.ir/article_11788_8a50fa5a70c685bca55e536a2466e51e.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Synthesis of Lithium Ion Sieve Nanoparticles and Optimizing Uptake Capacity by Taguchi Method15241178910.30492/ijcce.2014.11789ENSaeed ZandevakiliDepartment of Mining Engineering, Shahid Bahonar University of Kerman,
P.O. Box 76169-133 Kerman, I.R. IRAN0000-0002-9316-8608Mohammad RanjbarDepartment of Mining Engineering, Shahid Bahonar University of Kerman,
P.O. Box 76169-133 Kerman, I.R. IRANMaryam EhteshamzadehDepartment of Materials Engineering, Shahid Bahonar University of Kerman,
P.O.Box 76169-133 Kerman, I.R. IRANJournal Article20140222<em>Spinel-type of MnO<sub>2</sub> nanoparticles which successfully synthesized by a hydrothermal process, have a required capacity for lithium uptake from liquid resources. The</em><em>most lithium adsorption capacity of 6.6 mmol/g of up to now was found to be an important limiting parameter for industrial application</em><em>s. </em><em>Therefore, increasing uptake capacity of these ion sieves by studding the effect of six effective parameters, involving lithium compounds, manganese compounds, oxidizing reagents,</em><em> calcination temperatures,</em><em> heating times and Li/Mn mol ratios was investigated. To this end, Taguchi L<sub>9</sub>(3<sup>4</sup>) orthogonal array was employed</em><em>as a predominate method</em><em> to evaluate these parameters and the results optimized by using analysis of variance (ANOVA) and analysis of mean (ANOM) in two separate stages. Although, all mentioned parameters had significant effect on lithium uptake capacity, but oxidizing reagents were the most effective factors. Hence, a new ion sieve with lithium adsorption capacity more than 9 mmol/g was synthesized for the first time, by applying this method.</em>https://ijcce.ac.ir/article_11789_550047f099bf2cad4a4f785b4e788079.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Synthesis of Nanoporous Metal Organic Framework MIL-53-Cu and Its Application for Gas Separation25281179010.30492/ijcce.2014.11790ENMansoor AnbiaResearch Laboratory of Nanoporous Materials, Faculty of Chemistry,
Iran University of Science and Technology, P.O. Box 16846-13114 Tehran, I.R. IRANVahid HoseiniResearch Laboratory of Nanoporous Materials, Faculty of Chemistry,
Iran University of Science and Technology, P.O. Box 16846-13114 Tehran, I.R. IRANSakineh MandegarzadResearch Laboratory of Nanoporous Materials, Faculty of Chemistry,
Iran University of Science and Technology, P.O. Box 16846-13114 Tehran, I.R. IRANElahe MotaeeResearch Laboratory of Nanoporous Materials, Faculty of Chemistry,
Iran University of Science and Technology, P.O. Box 16846-13114 Tehran, I.R. IRANSara SheykhiResearch Laboratory of Nanoporous Materials, Faculty of Chemistry,
Iran University of Science and Technology, P.O. Box 16846-13114 Tehran, I.R. IRANJournal Article20150217<em>MIL-53-Cu has been synthesized hydrothermally and has been used for the first time for gas separation. MIL-53-Cu shows adsorption capacities of 8.1, 0.7 and 0.5 m.mol/g, respectively, for CH<sub>4</sub>, CO<sub>2 </sub>and H<sub>2 </sub>at 30 bar and 298 K. The high CH<sub>4</sub> adsorption capacity of MIL-53-Cu maybe attributed to the high pore volume and large number of open metal sites. The high selectivity for CH<sub>4</sub> over CO<sub>2</sub> (11.5) and H<sub>2</sub> (16.2), suggests that MIL-53-Cu is a effective adsorbent material for the separation of CH<sub>4</sub> from gas mixtures.</em>https://ijcce.ac.ir/article_11790_05c2e7ec5dd2da0e1298d31c18d86a5c.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Ordered Nanoporous Carbon Based Solid-Phase Microextraction for the Analysis of Nitroaromatic Compounds in Aqueous Samples29391179110.30492/ijcce.2014.11791ENMansoor AnbiaResearch Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology,
P.O. Box: 16846-13114 Tehran, I.R. IRANMorteza KhazaeiResearch Laboratory of Nanoporous Materials, Faculty of Chemistry, Iran University of Science and Technology,
P.O. Box: 16846-13114 Tehran, I.R. IRANJournal Article20130511<em>In this paper, the possibility of using a new ordered nanoporous carbon as a new fiber in headspace solid phase microextraction (HS-SPME) to determine of mononitrotoluenes (MNTs) in waste water is demonstrated. The structural order and textural properties of the ordered nanoporous carbon were studied by X Ray Diffraction (XRD), Scanning Electron Microscopy (SEM) images and nitrogen adsorption isotherms. The analysis was done on a gas chromatograph equipped with flame ionization detector and capillary column. The main factors affecting the MNT compounds extraction such as rate of stirring sample solution, sample solution volume, ion strength of sample solution, extraction time and temperaturehave been investigated and established. Optimization of these parameters was done by Taguchi method and Orthogonal Array Design (OAD). The effects of these parameters were investigated using the analysis of variance (ANOVA).</em><em> Under the optimum conditions, recovery values were between 87.1% and 106.2%, Limit Of Detections (LODs) ranged from 0.01 </em><em>m</em><em>g/L to 0.16 </em><em>m</em><em>g/L and Linear Dynamic Range (LDR) of 0.5–400 </em><em>m</em><em>g/L was obtained. Relative standard deviation of single fiber and fiber-to-fiber (n=4) was in the range of 3.7-4.2% and 7.3-8.9%. Performance of the present method was evaluated for extraction and determination of nitroaromatic compounds in wastewater samples in the range of microgram per liter and satisfactory results were obtained.</em>https://ijcce.ac.ir/article_11791_413a4407227cfc7a765d00c1e645bb96.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Ultrasound Assisted Surfactant Enhanced Emulsification Microextraction and Spectrofluorimetry for Determination of Oxadiazon in Agricultural Water Samples41491180210.30492/ijcce.2014.11802ENSana BerijaniYoung Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, I.R. IRANGolnar AhmadiYoung Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, I.R. IRANJournal Article20140215<em>In this work, an environmentally friendly sample pre-treatment method, Ultrasound Assisted Surfactant Enhanced Emulsification Microextraction (UASEME) followed with spectrofluorimetry was performed for determination of oxadiazon residues in water samples. After the determination of the most suitable extraction solvent and its volume, other parameters such as type and concentration of surfactant, pH, extraction time and ionic strength were optimized. Under the best conditions for extraction recovery, 50µL of chlorobenzene was chosen as extraction solvent and Tween 20 in concentration of 0.06 mmol/L as emulsifier and 2 min was the required time for quantitative analysis, without ionic strength and pH adjustment. Limit of detection and relative standard deviation were calculated as 0.05µg/L and 3.2% respectively. The procedure was applied successfully for assessing matrix effect in real water samples with relative recovery 96-104% with the precision in the range of 2.9-3.4%. The results demonstrate that UASEME procedure as reported is reliable, rapid and easy to use for analysis of oxadiazon in water samples.</em> https://ijcce.ac.ir/article_11802_e702f8357a9f08809d1a4228735f925e.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Ionic Liquid Based Dispersive Liquid Liquid Microextraction and Enhanced Determination of the Palladium in Water, Soil and Vegetable Samples by FAAS51581180310.30492/ijcce.2014.11803ENSoleiman BaharDepartment of Chemistry, Faculty of Science, University of Kurdistan, P.O. Box 416 Sanandaj, I.R. IRANRazieh ZakerianDepartment of Chemistry, Faculty of Science, University of Kurdistan, P.O. Box 416 Sanandaj, I.R. IRANJournal Article20140208<em>In this study, we combined Ionic Liquid-based Dispersive Liquid Liquid Micro Extraction (IL-DLLME) with FAAS for determining the palladium in different real samples at the trace level. 1-hexyl-3-methylimidazolium hexafluorophosphate [Hmim][PF<sub>6</sub>] ionic liquid and 1-(2-pyridylazo) 2-naphthol (PAN), were chosen as the extraction solvent and the chelating agent, respectively. The hydrophobic Pd–PAN complex was extracted into the [Hmim][PF<sub>6</sub>] and separated from the aqueous phase. Then, the concentration of the enriched palladium in the sediment phase was determined by FAAS. Some effective parameters that would influence the FAAS signals and the microextraction efficiency, such as concentration of the chelating agent, pH, amount of the ionic liquid, type of disperser solvent and diluting agent, ionic strength, extraction and centrifugation times were investigated and optimized. Under optimum experimental conditions, the detection limit (3s) and enhancement factor were 3.2 μg/L and 16.2, respectively.The Relative Standard Deviation (RSD) was 1.2% at a concentration of 50 μg/L. The developed method was successfully applied for determining trace amounts of the palladium in the water, </em><em>soil and vegetable samples.</em>https://ijcce.ac.ir/article_11803_6eb8bcca0e143edd7bbfc202c105ebae.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Simultaneous Determination of Hydrochlorothiazide and Enalapril Maleate in Pharmaceutical Formulations Using Fourier Transform Infrared Spectrometry59681180610.30492/ijcce.2014.11806ENSeyyed Hamid AhmadiChemistry and Chemical Engineering Research Center of Iran, Tehran, I.R. IRANHassan TavakoliDepartment of Chemistry, Emam Ali University, Tehran, I.R. IRANMajid AmirzadehDepartment of Chemistry, Emam Ali University, Tehran, I.R. IRANMohammad Reza SangiDepartment of Chemistry, Arak University, Arak, I.R. IRANJournal Article20131214<em>A new </em><em>Fourier Transform-Infra Red (FT-IR) spectrometric method was developed for </em><em>assaying hydrochlorothiazide (HCT) and enalapril maleate (ENM) in binary solid pharmaceutical</em><em> formulations.</em><em> Multivariate Partial Least Squares (PLS) method was used for calibration of derivative</em><em> spectral data. Acetonitrile was used as solvent due to its spectral transparency and adequate solubility of analytes in it. A 4- levels full factorial design of binary standard solutions of HCT and ENM were prepared and used for calibration in the spectral range of 1550-1800 cm<sup>-1</sup>. Statistical parameters such as correlation coefficient(R), Standard Error of Estimation (SEE), Standard Error of Prediction (SEP), and Standard Error of Cross Validation (SECV) have been evaluated and used for selecting of optimizing of parameters. Correlation coefficients were 0.9990 and 0.9995 and Relative Standard Deviation (RSD) were 1.97% and 1.35% (n=5) for HCT and ENM, respectively. Detection limits of ENM and HCT were obtained 0.54 and 0.99 mg/mL respectively. The proposed methods were successfully applied to the determination of the over mentioned drugs in laboratory-prepared mixtures and in commercial tablets. This method has suitable accuracy, precision, repeatability and is comparable with reference standard methods.</em>https://ijcce.ac.ir/article_11806_9ec7b30e06db4d97d0c0426af0fc665c.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Carmine Adsorption from Aqueous Solution by Crosslinked Peanut Husk69771181010.30492/ijcce.2014.11810ENYinghua SongDepartment of Chemistry and Chemical Engineering, Chongqing Technology and Business University, Chongqing 400067, CHINAYi LiuVoith Corporate Management Co., Ltd, Shanghai, 200120, CHINAShengming ChenDepartment of Chemistry and Chemical Engineering, Chongqing Technology and Business University, Chongqing 400067, CHINAHongxia QinDepartment of Chemistry and Chemical Engineering, Chongqing Technology and Business University, Chongqing 400067, CHINAHui XuDepartment of Chemistry and Chemical Engineering, Chongqing Technology and Business University, Chongqing 400067, CHINAJournal Article20130120<em>To observe the feasibility of the removal of carmine, peanut husk, an agriculture by-product, was crosslinked with </em><em>epichlorohydrin</em><em> in alkaline medium and used for adsorption of carmine from aqueous solution. Batch experiments were carried out to study the effects of various parameters such as initial pH, contact time, adsorbent dosage and initial carmine concentration, as well as temperature on carmine adsorption. The results indicated that adsorption equilibrium data could be more effectively described by Langmuir isotherm equation than by Freundlich equation. The maximum monolayer adsorption capacity of peanut husk from the Langmuir model was 6.68 mg</em><em>/g</em><em>at 323 K. The pseudo second-order model provided a better fit to experimental data in the kinetic studies. The mass transfer model such as the intraparticle diffusion was applied to the experimental data to examine the mechanisms of the rate-controlling step.</em><em> It was found that the intraparticle diffusion is the significant controlling step under the experimental conditions but it was not the unique one. The thermodynamic parameters of the adsorption process were also calculated by using constants derived from Langmuir equations, which propose an endothermic physical spontaneous adsorption process</em><em>.</em>https://ijcce.ac.ir/article_11810_df56494b23e8aa693eff300e471a41e5.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Supercritical Fluid Extraction of β-Carotene from Crude Palm Oil Using CO2 in a Bubbler Extractor: Mass Transfer Study79871180710.30492/ijcce.2014.11807ENReza DavarnejadDepartment of Chemical Engineering, Faculty of Engineering, Arak University,
P.O. Box 38156-8-8349 Arak, I.R. IRANNorazlila Mohammad NizaSchool of Chemical Engineering, Engineering Campus, Universiti Sains Malaysia, 14300 Nibong Tebal, Penang, MALYSIAShahrzad ArpanahzadehDepartment of Chemical Engineering, Faculty of Engineering, Arak University,
P.O. Box 38156-8-8349 Arak, I.R. IRANMelika ZakeriDepartment of Chemical Engineering, Faculty of Engineering, Arak University,
P.O. Box 38156-8-8349 Arak, I.R. IRANJournal Article20130521<em>In this study, the diffusivity and volumetric mass transfer coefficients for the extraction of β-carotene from crude palm oil using CO<sub>2</sub> solvent in supercritical fluid were determined in the pressure range of 7.5-17.5 MPa and temperature range of 80-120 ºC. For this purpose, a statistical method was applied in order to minimize the number of experiments required. The volumetric mass transfer coefficient for the extraction of β-carotene was then correlated as a function of pressure, temperature and extraction time in order to study the effect of each of these variables on the coefficient. The experimental results showed that the maximum volumetric mass transfer coefficient was around 2.486 × 10<sup>-2</sup> s<sup>-1</sup> at pressure of 7.5 MPa, temperature of 100 ºC and extraction time of 1 hour. The minimum volumetric mass transfer coefficient was 0.046 × 10<sup>-2</sup> s<sup>-1</sup> at pressure of 17.5 MPa, temperature of 120 ºC and extraction time of 5 hours. The optimum volumetric mass transfer coefficient was statistically obtained</em> <em>around 6.700 × 10<sup>-3</sup> s<sup>-1</sup> at pressure of 17.7 MPa, temperature of 100.5 ºC and extraction time of 3.9 hours.</em>https://ijcce.ac.ir/article_11807_5660ec13fadba72b5e6a8e592959a563.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Chaos Control in a Non-Isothermal Autocatalytic Chemical Reactor89971180810.30492/ijcce.2014.11808ENShabnam RasoulianDepartment of Chemical and Petroleum Engineering, Sharif University of Technology, P.O. Box 11365-9465 Tehran, I.R. IRANMohammad ShahrokhiDepartment of Chemical and Petroleum Engineering, Sharif University of Technology, P.O. Box 11365-9465 Tehran, I.R. IRANHassan SalariehDepartment of Mechanical Engineering, Sharif University of Technology, P.O. Box 11365-9567 Tehran, I.R. IRANJournal Article20130420<em>In this paper, a reaction system consisting of two parallel, non-isothermal autocatalytic reactions in a Continuous Stirred Tank Reactor (CSTR) has been considered. Reactor chaotic behavior is possible for certain </em><em>values </em><em>of system parameters. Two types of controllers are designed and compared in order to control both the reactor temperature and the product concentration. The first controller is a linear state feedback type, designed based on the linearized model of the process </em><em>and the second one is designed based on the Global Linearizing Control (GLC)</em><em> strategy.</em><em>Since the system states are not measured completely, a nonlinear observer has been used to estimate the system states. Finally, computer simulation </em><em>is </em><em>performed to show the effectiveness of the proposed schemes. Simulation results indicate that the GLC-based control scheme is more effective for set point tracking while the control scheme obtained using the linearized model of the process is more efficient for load rejection purposes.</em>https://ijcce.ac.ir/article_11808_a80a9887e5364de25c5b6269ed71a029.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Biomimetic TCF Bleaching of Pulp by Simple Inorganic Complexes of Cupric/Cobalt Acetate991051180910.30492/ijcce.2014.11809ENXue Fei ZhouKunming University of Science and Technology, P.O. Box A302-12, Building No. 5, Xinying Yuan, No. 50, Huancheng East Road, Kunming, 650051 Yunnan Province, CHINAJournal Article20130825<em>Oxygen delignified kraft pulp from </em><em>eucalyptus</em><em> (</em><em>E. urophylla </em><em>× E. grandis)</em><em> was catalytically pretreated in aerobic condition using ammonium persulfate </em><em>in present of catalists like </em><em>cupric acetate and/or cobalt acetate in acetic acid-water solution, i. e. S<sub>2</sub>O<sub>8</sub><sup>2-</sup>-Cu<sup>2+</sup>, S<sub>2</sub>O<sub>8</sub><sup>2-</sup>-Co<sup>2+</sup> and S<sub>2</sub>O<sub>8</sub><sup>2-</sup>-(Cu<sup>2+</sup>+Co<sup>2+</sup>). </em><em>Final bleached pulp after pretreatment</em><em> with the three catalytic systems showed higher delignification (23.45%, 21.85% and 19.63% respectively), better optical properties (82.93, 82.18 and 81.92% ISO brightness respectively) and pulp viscosity (787, 791 and 762 mL</em><em>/</em><em>g respectively</em><em>;</em><em> mL</em><em>/</em><em>g</em><em>: intrinsic viscosity unit of pulp</em><em>)</em><em>than the control pulp (14.12% delignification, 77.33% ISO brightness and 746 mL</em><em>/</em><em>g viscosity). S<sub>2</sub>O<sub>8</sub><sup>2-</sup>-Cu<sup>2+</sup> and S<sub>2</sub>O<sub>8</sub><sup>2-</sup>-Co<sup>2+</sup> showed similar reduction in hydrogen peroxide consumption (61.91%, 62.48%), and S<sub>2</sub>O<sub>8</sub><sup>2-</sup>-(Cu<sup>2+</sup>+Co<sup>2+</sup>) showed a greater reduction in hydrogen peroxide consumption than the two treatments (83.05%). Some improvements in tensile and tear strength of the resulting pulp were observed. The new sequence also yields composite effluents with larger percentage of lignin aromatic compounds compared to the control.</em>https://ijcce.ac.ir/article_11809_fc44955c2f0b3bde8f54cf700c0177b8.pdfIranian Institute of Research and Development in Chemical Industries (IRDCI)-ACECRIranian Journal of Chemistry and Chemical Engineering1021-998633420141201Effect of Glycerol and Stearic Acid as Plasticizer on Physical Properties of Benzylated Wheat Straw1071161181110.30492/ijcce.2014.11811ENJamshid Mohammadi RovshandehCaspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANKamel Ekhlasi KazajCaspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANAshkan HosseiniCaspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANPeyman Pouresmaeel SelakjaniCaspian Faculty of Engineering, College of Engineering, University of Tehran, Rezvanshahr, P.O. Box 43841-119 Guilan, I.R. IRANJournal Article20130906<em>The wheat straw as abundant lignocellulosic resource was successfully undergone in a benzylation reaction and plasticized with different contents (2.5, 3, 5 and 7 wt. %) of glycerol and stearic acid.</em><em>The effect of type and concentration of plasticizers on the mechanical, thermomechanical, morphological and water absorption properties of Benzylated Wheat Straw (BWS) was investigated by tensile, Dynamic Mechanical Thermal Analysis (DMTA) measurements and Scanning Electron Microscopy (SEM), respectively. The experimental results show that addition of plasticizer may increase the elongation at break and may decrease the tensile strength for the sheet plasticized with 5% or 7% stearic acid and 3% or 5% glycerol. The addition of 7% glycerol or 3% stearic acid makes increase both tensile strength and elongation at break. These films are stronger but less tough compared to unplasticized BWS film. The porosity at the surfaces of samples from the SEM micrographs showed good correlation with the mechanical properties of the blends.On addition of plasticizer, it is observed that there is a decrease in the size of micropores and for higher concentration, it no longer exists. Compared with glycerol, the water absorption of the BWS films plasticized with stearic acid was significantly lower. Glycerol is soluble in water and removed from films after floating in water. The film plasticized with 2.5% both glycerol and stearic acid had better water resistance than others. As usual, glass transition temperatures of samples were decreased by addition of plasticizers according to DMTA results.</em>https://ijcce.ac.ir/article_11811_bb6b27a1abcf3958dce71de33c1e4334.pdf