Iranian Polymer Journal
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Dynamic mechanical properties of bacterial cellulose nanofibres
Iranian Polymer Journal - Tập 27 - Trang 433-443 - 2018
In this work, dynamic mechanical properties of the grown bacterial cellulose (BC) nanofibers were investigated. BC pellicles were fabricated using bacterial fermentation (Gluconacetobacter xylinus). The morphology results confirmed that the dried BC at ambient conditions could be categorized as a xerogel. The thermal dynamic mechanical analysis results indicated that the bound water in bacterial c......
Fabrication of a porous wall and higher interconnectivity scaffold comprising gelatin/chitosan via combination of salt-leaching and lyophilization methods
Iranian Polymer Journal - Tập 21 Số 3 - Trang 191-200 - 2012
Viscoelastic changes in chlorinated butyl rubber modified with graphene oxide
Iranian Polymer Journal - - 2017
The glass–rubber transition region in multiple component systems is significant for studying the slow relaxation processes in amorphous polymers. It is the first time that graphene oxide (GO) is added into chlorinated butyl rubber (CIIR) to study the effect of GO on different relaxation processes of CIIR. We aimed to give a possible insight to the molecular relaxation behaviors of CIIR/GO nanocomp......
Impact of clay modifier on structure, thermal, mechanical and transport properties in polyurethane/Maghnite nanocomposites as barrier materials
Iranian Polymer Journal - Tập 32 - Trang 829-840 - 2023
A thermoplastic polyurethane (TPU) nanocomposite was synthesized based on Maghnite as an inorganic reinforcement phase. The result of this study was to evaluate the gas barrier properties of a thermoplastic polyurethane (TPU) material containing clay nanoparticles. The preparation of the thermoplastic polyurethane prepolymer with NCO terminations was carried out using an in situ solution polymeriz......
Processing and characterization of reclaimed rubber composite materials
Iranian Polymer Journal - Tập 24 - Trang 671-678 - 2015
The dynamic mechanical properties of environment-friendly elastomeric composites consisting of reclaimed rubber (r-rubber), a waste product of roller processing of textile mill, and organic hindered phenol compound 4,4′-thio-bis(6-tert-butyl-m-methyl phenol) (AO-300) were investigated. With incorporation of AO-300 into the r-rubber, the storage modulus (E′) and loss modulus (E′′) of r-rubber were ......
A dual-cross-linked hydrogel based on hyaluronic acid/gelatin tethered via tannic acid: mechanical properties’ enhancement and stability control
Iranian Polymer Journal - - 2021
Extracellular matrix (ECM) as a network is mainly composed of glycosaminoglycans and proteins. Among these glycosaminoglycans and proteins that naturally occur in ECM, hyaluronic acid (HA) and gelatin attract more attentions. In this work, a chemically cross-linked HA/gelatin hydrogel (HG hydrogel) was firstly fabricated, and then, tannic acid (TA) was introduced as a physical cross-linker, to for......
A polyacrylamide hydrogel for application at high temperature and salinity tolerance in temporary well plugging
Iranian Polymer Journal - Tập 27 - Trang 577-587 - 2018
In addition to conventional approach to ensure the successful application of polymer hydrogels in maintaining temporary well plugging, exact analysis of gel formation and gel strength properties in wellbore are necessary. In this work, bottles and rheology tests are used to investigate the polymer hydrogel gelation time and cross-linking kinetics of sol–gel systems which consist of polyacrylamide ......
Characterization of the mechanical and thermal properties of rape short natural-fiber reinforced thermoplastic composites
Iranian Polymer Journal - Tập 31 - Trang 143-151 - 2021
In this study, the effects of filler amounts were studied on the mechanical and thermal properties of high-density polyethylene (HDPE), polystyrene (PS) and polyoxymethylene (POM) polymers reinforced with short rape fibers. HDPE-rape, POM-rape and PS-rape fiber composite materials were prepared with different fiber contents and their tensile, flexural, Izod impact and TGA/DTA properties were exami......
Static and dynamic mechanical properties of nanosilica and multiwalled carbon nanotube reinforced acrylonitrile butadiene styrene composites: theoretical mechanism of nanofiller reinforcement
Iranian Polymer Journal - Tập 30 - Trang 1211-1225 - 2021
Experimental and theoretical approaches were employed to analyze the static and dynamic mechanical properties of acrylonitrile butadiene styrene (ABS) nanocomposites reinforced with multiwalled carbon nanotube (MWCNT) and nanosilica. Enhanced stiffness and tensile strength were observed for composites with 5% (wt) CNT and 3% (wt) nanosilica. Micromechanical models were highly promising to predict ......
Biosorption of cadmium using a novel, renewable and recoverable modified natural cellulose bearing chelating Schiff base ligand based on 2-hydroxy-5-methyl benzaldehyde
Iranian Polymer Journal - Tập 27 - Trang 461-468 - 2018
Natural cellulose was extracted from Sesbania sesban plant. A novel approach toward chemically modified cellulose, bearing active chelating Schiff base, was synthesized using 2-hydroxy-5-methyl benzaldehyde. The chemical and structural features of the adsorbent were characterized by Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and energy dispersive analysis o......
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