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SHIPRA AGNIHOTRI¹, REENA SINGHAL^*
Journal of Polymer Materials, Vol.34, No.4, pp. 663-680, 2017
Abstract A series of superabsorbent hydrogel (SAHs) based on poly Acrylic Acid (AAc), Sodium Alginate (NaAlg) and Sodium Humate (SH) (AAc/NaAlg/SH) was prepared by free radical solution copolymerization. Hydrogel having sodium humate 9.09 wt% showed maximum water absorbency of 906 g of water per gram of superabsorbent hydrogel. The application of the synthesized superabsorbent hydrogel was investigated in agriculture as soil conditioner for water retention in sandy soil. The study revealed that the synthesized superabsorbent hydrogels could act as an effective water saving material for agricultural applications. Swelling behavior (such as swelling ratio, initial swelling rate More >

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XIANHUA LI¹, QINGBO YU^2,*, SONGHUI FANG², XIAOZE WANG²
Journal of Polymer Materials, Vol.34, No.4, pp. 681-693, 2017
Abstract In this article, novel Ag/g-C₃N₄/C ternary nanocomposites with leaves-fructification-like architecture were prepared by hydrothermal treatment of the mixture of g-C₃N₄ nanosheets, glucose solution and silver nitrate. In order to comparison, a series of nanomaterials including g-C₃N₄ nanosheets, binary nanocomposites (g-C₃N₄/C) and ternary nanocomposites (Ag/g-C₃N₄/C) loaded with different amounts of carbon were prepared and characterized in detail. The Ag/g-C₃N₄/C1 nanocomposites showed the highest photocatalytic activity towards degradation of MB. The reason for this was bio-inspired structures effects and the synergistic effect of Ag, g-C₃N₄ and carbon, which increased visible-light absorption due to their surface plasmon resonance (SPR) effect of Ag, More >

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MAHVASH JAVANSHIR¹, MAHMOOD MASOOMI1*, ROUHOLLAH BAGHERI¹, ARMIN HAJIBABA¹, MOJTABA AHMADI¹
Journal of Polymer Materials, Vol.34, No.4, pp. 695-708, 2017
Abstract The effect of nanoclay on properties of linear low density polyethylene (LLDPE)/low density polyethylene (LDPE)/Polyamide6 (PE/PA6)film was investigated. X-ray diffraction (XRD) analysis and transmission electron microscopy (TEM) proved that exfoliation in nanocomposite containing 4 phr of organoclay was achieved and a large amount of organoclay was located in both PA6 and PE/PA interface. According to scanning electron microscopy (SEM), the use of organoclay alongside polyethylene grafted maleic anhydride (PE-g-MA) as a compatibilizer can lead to a reduction of size in dispersed droplets. Transitions in rheological behavior from liquid-like to solid-like at low frequencies were observed More >

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JING XU^1,*, GANG XU¹, XIAOJU LONG¹, TINGTING LIU¹, HAI XU²
Journal of Polymer Materials, Vol.34, No.4, pp. 709-717, 2017
Abstract A combined experiment and molecular simulation study was performed to understand the mechanism of mechanical change in doped poly (p-phenylene vinylene) (PPV) film. PPV with a partial quinoid structure was obtained using oxidation of ferric chloride. Its chemical structure was determined by FT-IR, Raman and UV-vis spectra. The nanomechanical properties of the neutral PPV film and the chemical-doped PPV films were investigated by nanoindentation test. The critical bending radius of films based on the flexible base was evaluated from the results of the nanoindentation test. The relationship between the benzoid/quinoid ratio of PPV and its More >

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SHAOBO FU, TENGYANG ZHU, FEILONG PAN, JUJIE LUO^*
Journal of Polymer Materials, Vol.34, No.4, pp. 719-732, 2017
Abstract A series of novel gas separation membranes based on poly(ether sulfone)s were successfully synthesized via polycondensation, brominated and methyl imidazolium functionalization reactions. The structures and properties of this series, as well as the gas separation properties of the corresponding polymer membranes, were studied. The permeability and selectivity of the membranes were studied at different temperatures of 25-55°C and pressures of 0.5-1.5 atm, using single gases CO₂ and CH₄ . Gas-permeation measurements showed that copolymers with different content of imidazoliumionic groups exhibited different separation performances. For example, the membrane from MIPESF-c showed better performance in terms of More >

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M.K. MARICHELVAM^*, K. KANDAKODEESWARAN
Journal of Polymer Materials, Vol.34, No.4, pp. 733-745, 2017
Abstract Aircraft structures are redesigned by fibre-reinforced composites mainly due to their high specific stiffness and strength. However, while using the semi-conducting composites in an aircraft it may be failed due to lightning strike damage. The existing protection techniques will increase the weight and hence negatively impacts the fuel efficiency. This paper addresses an overview of the lightning damages that occur due to the usage of composites and existing protection techniques. The Plasma coating of copper and titanium nitride on the epoxy laminate was carried out to increase the electrical conductivity on polymeric composite coatings. The More >

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KANCHANA M^1,*, JAYAPPRIYAN R M¹, KUMAR B¹, USHA ANTONY²
Journal of Polymer Materials, Vol.34, No.4, pp. 747-758, 2017
Abstract Dilute solution of chitosan has been deposited on glass slide by inkjet printing and the efficacy of the coating for its formability, morphology and functionality has been explored. The chitosan coating was characterized by SEM, AFM, Optical Microscope and Spectrophotometer. The biosensor formulation (ferritin) entrapped between two layers of chitosan coating exhibited active functional characteristics confirming that chitosan coatings fabricated by inkjet printing could be utilized for optical biosensor applications. More >

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A.K. GHOSH^*, R.C. BINDAL
Journal of Polymer Materials, Vol.34, No.4, pp. 759-772, 2017
Abstract In this study, we report the impact of heat treatment medium (hot air, hot water & steam) on structure and performance of aliphatic-aromatic and aromatic-aromatic types thin-film composite (TFC) polyamide reverse osmosis (RO) membranes prepared by in-situ interfacial polymerization. Aliphatic-aromatic polyamide membranes were prepared using polyethylene imine (PEI) & isophthaloyl chloride (IPC) and aromatic-aromatic polyamide membranes were prepared using m-phenylene diamine (MPD) & trimesoyl chloride (TMC). Thin film coating of polyamide was given over laboratory synthesized microporous polysulfone supports. TFC membranes prepared using three different heat treatment media were characterized in terms of water permeability,… More >

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LIJUN CHEN, XIN ZHANG, DAWEI CHEN
Journal of Polymer Materials, Vol.34, No.4, pp. 773-782, 2017
Abstract The environmental friendly polyacrylate latex was prepared by semi-continuous seeded emulsion polymerization of butyl acrylate (BA), methyl methacrylate (MMA), hexafluorobutyl methacrylate (HFMA) and hydroxy propyl methacrylate (HPMA), which was initiated with potassium persulfate (KPS) and emulsified with the novel mixed surfactants of sodium dodecyl benzene sulfonate (SDBS) and myristyl hydroxypropyl sulpho betaine (betaine). The structure of the latex was confirmed by Fourier transform infrared spectroscopy (FTIR). The particle size of the latex was measured by Zetatrac dynamic light scattering detector. The properties of latex film were tested by differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), More >

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R.VINI, S.C. MURUGAVEL
Journal of Polymer Materials, Vol.34, No.4, pp. 783-796, 2017
Abstract A series of polyesters containing azomethine group in the main chain was synthesized by solution polycondensation of 4-[(4-hydroxy-3-methoxy phenyl)iminomethyl]phenol with various diacid chlorides. The synthesized polyesters were characterized systematically by Fourier transform infrared, UV and ¹ H and ¹³C NMR spectroscopy. UV analysis revealed that the synthesized polyesters have quite lower band gap than the corresponding monomer. The optical band gap values of monomer and polymer were found to be 2.80 and 2.64 respectively. Thermal properties were studied using thermo gravimetric analysis and differential scanning calorimetry. Thermogravimetric analysis indicated that the aromatic polymers had higher char More >

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CHUANBO HU^A,B, JIAWEI LI^A,B, YAZHOU KONG^A,B, YUSHI DING^A,B, YING LI^A,B,*
Journal of Polymer Materials, Vol.34, No.4, pp. 797-808, 2017
Abstract In this investigation, HCl doped poly(o-toluidine)/nano TiO₂ composite was prepared using in situ polymerization method. The composition and structure of the composite were characterized by Fourier transformation infrared spectroscopy (FT-IR), UV-visible spectroscopy (UV-vis), X-ray diffraction (XRD), Scanning electron microscopy (SEM) and Thermogravimetric analysis (TGA). The anticorrosion properties of the epoxy resin blended with poly(o-toluidine)/ nano TiO₂ composite were studied in 3.5% NaCl solution by electrochemical measurements. Potentiodynamic polarization measurement showed that poly(o-toluidine)/nano TiO₂ /epoxy composite coating acted as a highly efficient corrosion protection layer on steel with 97.85% protection efficiency. Electrochemical impendence spectroscopy measurement showed that poly(o-toluidine)/nano More >

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JOHAR SHUJAAT¹, ALIA ERUM¹, UME-RUQIA TULAIN¹, SOBIA NOREEN², ASMARA ISMAIL¹
Journal of Polymer Materials, Vol.34, No.4, pp. 809-821, 2017
Abstract Microspheres of new biomaterial arabinoxylan loaded with levosulpiride a model drug were formulated using ionotropic gelation technique. Microspheres were optimized by using different reaction parameters like cross linkers type and concentrations, concentration of biomaterial arabinoxylan, effect of reaction temperature and reaction time and drug loading method. Nine different formulations were formulated. It was observed that best microspheres were formulated using 10 % CaCl₂ , 3 % arabinoxyaln at 600C temperature and 15 minutes reaction time for curing. Compatibility of arabinoxylan with levosulpiride was tested by using XRD and FTIR techniques. Microsphere formulations were evaluated for percentage More >

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