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Synthesis and characterization of super‐absorbent hydrogels based on hemicellulose

20-May-2015 | Jian Zhang, Huining Xiao, Na Li, Qingwei Ping, Yi Zhang, Journal of Applied Polymer Science, 2015

ABSTRACT A kind of novel hemicellulose‐based hydrogel with excellent water absorbency was synthesized by the graft copolymerization of acrylic acid (AA), acrylic amide (AM) with hemicellulose. The various factors that influenced the water absorbency of the modified hemicellulose were studied, ...

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Few‐layer‐graphene/polycarbonate nanocomposites as dielectric and conducting material

20-May-2015 | P. K. Sain, R. K. Goyal, Y. V. S. S. Prasad, Jyoti, K. B. Sharma, A. K. Bhargava, Journal of Applied Polymer Science, 2015

ABSTRACT An attempt is taken to develop a flexible and light weight polycarbonate‐based nanocomposite system which could be successfully used as a dielectric material below percolation and as conducting material beyond percolation. The nanocomposite system has been prepared by solution mixing ...

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Preparation and characterization of poly(ethylene oxide)‐loaded hydroxypropyl‐β‐cyclodextrin nanofibers

15-May-2015 | M. Forhad Hossain, R. Hugh Gong, Muriel Rigout, Polymers for Advanced Technologies, 2015

Hydroxypropyl‐β‐cyclodextrin (HP‐β‐CD) is a modified β‐cyclodextrin (β‐CD) derivative, which is toxicologically harmless to mammals and other animals. HP‐β‐CD is electrospun from an aqueous solution by blending with a non‐toxic, biocompatible, synthetic polymer poly(ethylene oxide) (PEO). ...

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Facile preparation of EDTA‐functionalized chitosan magnetic adsorbent for removal of Pb(II)

15-May-2015 | Zhengyan Tan, Hong Peng, Hongfang Liu, Linling Wang, Jing Chen, Xiaohua Lu, Journal of Applied Polymer Science, 2015

ABSTRACT A novel magnetic adsorbent (EDTA/chitosan/PMMS) was facilely prepared by reacting chitosan with EDTA anhydride in presence of PEI‐coated magnetic microspheres. The as‐synthesized EDTA/chitosan/PMMS was characterized by XRD, SEM, TGA, FT‐IR, and VSM, and then employed in removal of ...

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Applications of DART‐MS for food quality and safety assurance in food supply chain

14-May-2015 | Tianyang Guo, Wei Yong, Yong Jin, Liya Zhang, Jiahui Liu, Sai Wang, Qilong Chen, Yiyang Dong, Haijia Su, Tianwei Tan, Mass Spectrometry Reviews, 2015

Direct analysis in real time (DART) represents a new generation of ion source which is used for rapid ionization of small molecules under ambient conditions. The combination of DART and various mass spectrometers allows analyzing multiple food samples with simple or no sample treatment, or in ...

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Pd(II) complexes of Schiff bases and their application as catalysts in Mizoroki–Heck and Suzuki–Miyaura cross‐coupling reactions

14-May-2015 | Mustafa Keleş, Hülya Keleş, Duygu Melis Emir, Applied Organometallic Chemistry, 2015

Schiff bases of 2‐(phenylthio)aniline, (C6H5)SC6H4NCR (R = (o‐CH3)(C6H5), (o‐OCH3)(C6H5) or (o‐CF3)(C6H5)), and their palladium complexes (PdLCl2) were synthesized. The compounds were characterized using 1H NMR and 13C NMR spectroscopy and micro analysis. Also, electrochemical properties of the ...

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Effects of nano‐tio2 on the performance of high‐amylose starch based antibacterial films

14-May-2015 | Chao Liu, Hanguo Xiong, Xing Chen, Shun Lin, Yanhua Tu, Journal of Applied Polymer Science, 2015

ABSTRACT The purpose of this article is to investigate the effects of nano‐tianium dioxide (nano‐TiO2) on the high‐amylose starch/polyvingl alcohol (PVA) blend films prepared by a solution casting method. The results show that at the concentration of 0.6% of nano‐TiO2, the film demonstrated ...

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Crystallization behavior and mechanical properties of an electrospun ethanol‐mediated poly(ethylene terephthalate) fibrous membrane

14-May-2015 | Li‐Na Wang, Yan‐Wei Wang, Wen‐Tao Liu, Xue‐Lian Xia, Su‐Qin He, Hao Liu, Cheng‐Shen Zhu, Journal of Applied Polymer Science, 2015

ABSTRACT A simple approach for preparing electrospun poly(ethylene terephthalate) (PET) fibrous membranes with excellent spinnability and mechanical properties is introduced in this article. To enhance the electrospinnability of PET, a small content of ethanol was incorporated into a 16 wt % ...

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A biomimetic surface treatment to obtain durable omniphobic textiles

14-May-2015 | Carmela De Marco, Valeria Oldani, Claudia Letizia Bianchi, Marinella Levi, Stefano Turri, Journal of Applied Polymer Science, 2015

ABSTRACT A bio‐inspired surface treatment to make fabrics omniphobic is reported, exploiting the ability of dopamine – a widespread naturally occurring biological neurotransmitter – to give substrate adhesion and surface immobilization. Standard polyester and polyacrylonitrile fabrics, which ...

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RAFT polymerization in supercritical carbon dioxide based on an induced precipitation approach: Synthesis of 2‐ethoxyethyl methacrylate/acrylamide block copolymers

13-May-2015 | Gerard Hawkins, Per B. Zetterlund, Fawaz Aldabbagh, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT A new controlled/living heterogeneous polymerization technique using RAFT in benign supercritical CO2 is described involving the formation of monomer‐swollen seed particles by precipitation of macroRAFT agent prior to polymerization. Controlled/living character of the induced ...

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