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372 Aktuelle Fachpublikationen zum Thema temperature

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Thermoresponsive PNIPAM/silica nanoparticles by direct photopolymerization in aqueous media

06.03.2015 | Hua Zou, Helmut Schlaad, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT This article presents a simple and facile method to fabricate thermoresponsive polymer‐grafted silica particles by direct surface‐initiated photopolymerization of N‐isopropylacrylamide (NIPAM). This method is based on silica particles bearing thiol functionalities, which are ...

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Optimizing the electrochemical performance of imidazolium‐based polymeric ionic liquids by varying tethering groups

04.03.2015 | Zhe Jia, Wen Yuan, Chunjuan Sheng, Hui Zhao, Heyi Hu, Gregory L. Baker, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT We report the synthesis and characterization of a series of novel imidazolium cation and bis(trifluoromethane)sulfonimide anion (TFSI−)‐based ionic liquid (IL) model compounds and their corresponding polymeric ionic liquids (PILs) with various tethering groups. Ethylene oxide ...

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Recyclable carbon fiber‐reinforced plastics (CFRP) containing degradable acetal linkages: Synthesis, properties, and chemical recycling

03.03.2015 | Ayaka Yamaguchi, Tamotsu Hashimoto, Yoshinori Kakichi, Michio Urushisaki, Toshikazu Sakaguchi, Kazumasa Kawabe, Keii ..., Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Two epoxy resins containing degradable acetal linkages were synthesized by the reaction of cresol novolak‐type phenolic resin (CN) with vinyl ethers containing a glycidyl group [cyclohexane dimethanol vinyl glycidyl ether (CHDMVG) and 4‐vinyloxybutyl glycidyl ether (VBGE). Carbon ...

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Investigation of Suzuki–Miyaura catalyst‐transfer polycondensation of AB‐type fluorene monomer using coordination‐saturated aryl Pd(II) halide complexes as initiators

27.02.2015 | Zilong Zhang, Pan Hu, Xiao Li, Hongmei Zhan, Yanxiang Cheng, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Novel triarylamine‐based coordination‐saturated aryl Pd(II) halide complexes ligated by PEt3, PCy3, and P(o‐tol)3 were successfully synthesized by direct oxidative addition of aryl halide to the corresponding Pd(0) precursors. Suzuki–Miyaura coupling polymerization of ...

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Synthesis of polyisocyanurates by thermal rearrangement of polycyanurates

23.12.2014 | Kousuke Tsuchiya, Eisuke Goto, Yoshihito Ishida, Tomoya Higashihara, Atsushi Kameyama, Mitsuru Ueda, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Polyisocyanurates have been successfully prepared by the thermal rearrangement of polycyanurates, which were obtained from 2,4‐dichloro‐6‐methoxy‐1,3,5‐triazine and bisphenol monomers. The thermal rearrangement was carried out in the presence of a small amount of tetrabutylammonium ...

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Ionic conductivity probed in main chain liquid crystalline azobenzene polyesters

16.12.2014 | Chinmay G. Nardele, Vishal M. Dhavale, K. Sreekumar, S. K. Asha, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Three main chain thermotropic liquid crystalline (LC) azobenzene polymers were synthesized using the azobenzene twin molecule (P4P) having the structure Phenylazobenzene‐tetraethyleneglycol‐Phenylazobenzene as the AA monomer and diols like diethylene glycol, tetraethylene glycol ...

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Investigation of Mizoroki‐Heck coupling polymerization as a catalyst‐transfer condensation polymerization for synthesis of poly(p‐phenylenevinylene)

02.12.2014 | Masataka Nojima, Ryosuke Saito, Yoshihiro Ohta, Tsutomu Yokozawa, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT Mizoroki‐Heck coupling polymerization of 1,4‐bis[(2‐ethylhexyl)oxy]‐2‐iodo‐5‐vinylbenzene (1) and its bromo counterpart 2 with a Pd initiator for the synthesis of poly(phenylenevinylene) (PPV) was investigated to see whether the polymerization proceeds in a chain‐growth polymerization ...

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Synthesis of biodegradable thermoplastic elastomers from ε‐caprolactone and lactide

25.11.2014 | Yuushou Nakayama, Kazuki Aihara, Hitomi Yamanishi, Hiroshi Fukuoka, Ryo Tanaka, Zhengguo Cai, Takeshi Shiono, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT This article reports the synthesis and the properties of novel thermoplastic elastomers of A‐B‐A type triblock copolymer structure, where the hard segment A is poly(l‐lactide) (PLLA) and the soft segment B is poly(ε‐caprolactone‐stat‐d,l‐lactide) (P(CL‐stat‐DLLA)). The P(CL‐stat‐DLLA) ...

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Polymer grafting onto polyurethane backbone via Diels–Alder reaction

25.11.2014 | Soykan Agar, Hakan Durmaz, Ufuk Saim Gunay, Gurkan Hizal, Umit Tunca, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT The aliphatic polyurethane with pendant anthracene moieties (PU‐anthracene) was prepared from polycondensation of anthracen‐9‐yl methyl 3‐hydroxy‐2‐(hydroxymethyl)‐2‐methylpropanoate (anthracene diol), 1 with hexamethylenediisocyanate in the presence of dibutyltindilaurate in CH2Cl2 ...

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Novel heterocyclic poly(pyridine‐imide)s with unsymmetric carbazole substituent and noncoplanar structure: High thermal, mechanical and optical transparency, electrochemical, and electrochromic properties

21.11.2014 | Ying‐Chi Huang, Kun‐Li Wang, Wei‐Yi Lee, Yi‐An Liao, Der‐Jang Liaw, Kueir‐Rarn Lee, Juin‐Yih Lai, Journal of Polymer Science Part A: Polymer Chemistry, 2014

ABSTRACT A diamine containing heterocyclic pyridine and unsymmetrical carbazole substituents, 4‐(9‐ethyl‐3‐carbazole)‐2,6‐bis(4‐aminophenyl)pyridine (CBAPP), was prepared for use in the synthesis of poly(pyridine‐imide)s PI‐1–8 by direct polycondensation with dianhydrides in ...

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