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56.908 Aktuelle Fachpublikationen von john-wiley-sons

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Synthesis and photochromic properties of naphthopyran polymer containing photocrosslinkable coumarin moiety

05.12.2011 | Xie, Bingjie; Wang, Guang; Zhao, Xiancai, Journal of Applied Polymer Science, 2011

Abstract Naphthopyran homopolymer and copolymer containing coumarin in side chain were synthesized by atom transfer radical polymerization. Their photochromic properties were investigated using UV–vis absorption spectroscopy and their decoloration kinetics in films was quantified by ...

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Chitosan as an ocular drug delivery vehicle for vancomycin

05.12.2011 | Khangtragool, Anutra; Ausayakhun, Somsanguan; Leesawat, Phuriwat; Laokul, Chutiporn; Molloy, Robert, Journal of Applied Polymer Science, 2011

Abstract The main objective of this research has been to study the efficiency of chitosan as an ocular drug delivery vehicle for topically applied vancomycin in rabbit eyes. Vancomycin 50 mg/mL was reconstituted in four preparations, namely: in Tears Naturale II™, in 0.9% w/v aqueous sodium ...

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Ethylene polymerization over supported titanium‐magnesium catalysts: Effect of polymerization parameters on the molecular weight distribution of polyethylene

05.12.2011 | Nikolaeva, Marina I.; Mikenas, Tatiana B.; Matsko, Mikhail A.; Echevskaya, Ludmila G.; Zakharov, Vladimir A., Journal of Applied Polymer Science, 2011

Abstract The data on the effects of polymerization duration, cocatalyst, and monomer concentrations upon ethylene polymerization in the absence of hydrogen, and the effect of an additional chain transfer agent (hydrogen) on the molecular weight (MW), molecular weight distribution (MWD), and ...

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Polylactide toughening with epoxy‐functionalized grafted acrylonitrile–butadiene–styrene particles

05.12.2011 | Sun, Shulin; Zhang, Mingyao; Zhang, Huixuan; Zhang, Xiumei, Journal of Applied Polymer Science, 2011

Abstract Glycidyl methacrylate functionalized acrylonitrile–butadiene–styrene (ABS‐g‐GMA) particles were prepared and used to toughen polylactide (PLA). The characteristic absorption at 1728 cm−1 of the Fourier transform infrared spectra indicated that glycidyl methacrylate (GMA) was grafted ...

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A comprehensive single‐particle model for solid‐state polymerization of poly(L‐lactic acid)

05.12.2011 | Katiyar, Vimal; Shaama, Mallikarjun Sharada; Nanavati, Hemant, Journal of Applied Polymer Science, 2011

Abstract We propose here, a comprehensive model for the solid‐state polymerization (SSP) of a low to moderate molecular weight (MW) prepolymer of lactic acid, to produce high MW poly(L‐lactic acid) (PLLA). The reactions are rationally assumed to occur only in the amorphous region, and effective ...

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A mixture of buffing dust and chrome shavings as a filler for nitrile rubbers

05.12.2011 | Chrońska‐Olszewska, K.; Przepiórkowska, A., Journal of Applied Polymer Science, 2011

Abstract The incorporation of biopolymers, such as chrome shavings and buffing dust, into rubber blends makes it possible to obtain biodecomposable collagen–elastomer materials with good utility properties. It is the presence of a biopolymer in multicomponent polymeric materials that ...

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Characterization of gamma irradiated concentrated aqueous solutions of chitosan/sodium alginate blends and their drug uptake‐release characters

15.11.2011 | Horia M. Nizam El‐Din; Abdel Wahab M. El‐Naggar, Journal of Applied Polymer Science, 2011

Abstract Blends films based on different ratios of concentrated aqueous solutions of chitosan (CS) and sodium alginate (AG) in the presence of 1% of glutaraldehyde, as a cross‐linking agent for chitosan, were prepared by solution casting and then exposed to gamma irradiation. The formed blends ...

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Preparation and characterization of crosslinked carboxymethyl chitosan–oxidized sodium alginate hydrogels

15.11.2011 | Li‐Hong Fan; Xiao‐Ran Pan; Yue Zhou; Ling‐Yun Chen; Wei‐Guo Xie; Zhong‐Heng Long; Hua Zheng, Journal of Applied Polymer Science, 2011

Abstract Oxidized sodium alginate (OSA) was prepared through an oxidation reaction of sodium alginate in the presence of sodium periodate. In situ crosslinked hydrogels were obtained through the crosslinking reaction between the active aldehyde of OSA and the amino of the carboxymethyl chitosan ...

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Melt functionalization of LDPE with thio ester, amino ester, and hydroxy ester by thermolysis method—An FTIR study

15.11.2011 | R. Anbarasan; V. Dhanalakshmi, Journal of Applied Polymer Science, 2011

Abstract Low density poly(ethylene) (LDPE) was melt functionalized with three different esters namely, thio ester, amino ester, and hydroxy ester under inert atmosphere at 160°C with different experimental conditions. During the functionalization reaction, crosslinking (C.L) and CC formation ...

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Renewable polyol‐based polycarbamates and polycarbamate–formaldehyde thermosetting resins

15.11.2011 | Moon G. Kim, Journal of Applied Polymer Science, 2011

Abstract Several polycarbamates and polycarbamate–formaldehyde (CF) resins were synthesized, and their properties were investigated aiming at developing of useful thermosetting polymer materials from simple polyols including those derived from renewable resources. Polycarbamates synthesized ...

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