Meine Merkliste
my.chemie.de  
Login  

398 Aktuelle Fachpublikationen zum Thema temperature

rss
mit folgenden Suchkriterien:

Polyisobutylene‐based polyurethanes: VII. structure/property investigations for medical applications

28.08.2015 | Kalman Toth, Nihan Nugay, Joseph P. Kennedy, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT The outstanding hydrolytic and oxidative stabilities of polyisobutylene‐based polyurethanes (PIB‐based PUs) were reported earlier. Herein, we summarize recent investigations aimed at further enhancing hydrolytic‐oxidative stabilities (in terms of resistance to aqueous buffer, nitric ...

mehr

High molecular weight and low dispersity polyacrylonitrile by low temperature RAFT polymerization

28.08.2015 | Jeremy D. Moskowitz, Brooks A. Abel, Charles L. McCormick, Jeffrey S. Wiggins, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT High molecular weight polyacrylonitrile (PAN) with low dispersity has been successfully synthesized utilizing reversible addition‐fragmentation chain transfer (RAFT) polymerization. A comprehensive study was performed to understand the influence of reaction temperature, RAFT agent ...

mehr

End‐functionalized polylactides using a calcium‐based precatalyst: Synthesis and insights by mass spectrometry

21.08.2015 | Ilknur Yildirim, Sarah Crotty, Claas H. Loh, Grit Festag, Christine Weber, Pier‐Francesco Caponi, Michael Gottschald ..., Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT A simple and convenient method for the synthesis of end functionalized polylactides (PLAs) under mild conditions by ring opening polymerization (ROP) in the absence of potentially toxic catalysts is described. Various alcohols were used as initiators in combination with ...

mehr

A route toward multifunctional polyurethanes using triple click reactions

18.08.2015 | Erhan Demirel, Hakan Durmaz, Gurkan Hizal, Umit Tunca, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT The aliphatic polyurethane with pendant alkyne, perfluorophenyl, and anthracene moieties (PU‐anthracene) was prepared from polycondensation of anthracene, alkyne, and perfluorophenyl functional‐diols with hexamethylenediisocyanate in the presence of dibutyltindilaurate (DBTL) in ...

mehr

Synthesis of poly(ethylene‐co‐vinyl alcohol)‐g‐polystyrene graft copolymer and their applications for ordered porous film and compatibilizer

18.08.2015 | Haotian Wu, Tao Jiang, Jun Zhu, Kun Cui, Qiaoling Zhao, Zhi Ma, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT A series of new functional poly(ethylene‐co‐vinyl alcohol)‐g‐polystyrene graft copolymers (EVAL‐g‐PS) with controlled molecular weight (Mn = 38,000–94,000 g mol−1) and molecular weight distribution (Mw/Mn = 2.31–3.49) were synthesized via a grafting from methodology. The molecular ...

mehr

Novel reversible thermoresponsive nanogel based on poly(ionic liquid)s prepared via RAFT crosslinking copolymerization

17.08.2015 | Yong Zuo, Na Guo, Zhenqian Jiao, Pengfei Song, Xiaojun Liu, Rongmin Wang, Yubing Xiong, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT In this study, a facile strategy for the preparation of thermo‐ and pH‐responsive nanogels through reversible addition–fragmentation transfer (RAFT) crosslinking copolymerization of ionic liquid‐based monomers is demonstrated. The use of chain transfer agents (CTAs) containing ...

mehr

Thermal response of a PVCL–HA conjugate

12.08.2015 | Jukka Niskanen, Mikko Karesoja, Vladimir Aseyev, Xing‐Ping Qiu, Françoise M. Winnik, Heikki Tenhu, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT The synthesis and self‐assembling of a thermoresponsive conjugate of hyaluronic acid (HA) and poly(N‐vinylcaprolactam) (PVCL) is reported. Both polymers were end functionalized: HA via reductive amination, thereby introducing an azide endgroup to the chain end, and PVCL via ...

mehr

End group polarity and block symmetry effects on cloud point and hydrodynamic diameter of thermoresponsive block copolymers

06.08.2015 | Xu Xiang, Xiaochu Ding, Ning Chen, Beilu Zhang, Patricia A. Heiden, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Thermoresponsive block copolymers are of interest for delivery vehicles in the body. Often an interior domain is designed for the active agent and the exterior domain provides stability in the bloodstream, and may carry a targeting ligand. There is still much to learn about how block ...

mehr

Synthesis of water‐soluble zwitterionic polysiloxanes

06.08.2015 | Matthew Skinner, Ryan Selhorst, Todd Emrick, Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT A series of water‐soluble siloxane polymers with pendent phosphorylcholine (PC) and sulfobetaine (SB) zwitterions was prepared using thiol‐ene “click” chemistry. Specifically, well‐defined vinyl‐substituted siloxane homopolymers and block copolymers were functionalized with small ...

mehr

Copolymerization of isoprene with ethylene catalyzed by cationic half‐sandwich fluorenyl scandium catalysts

06.08.2015 | Gaixia Du, Jiaping Xue, Deqian Peng, Chao Yu, Hanghang Wang, Yuening Zhou, Jiaojiao Bi, Shaowen Zhang, Yuping Dong, ..., Journal of Polymer Science Part A: Polymer Chemistry, 2015

ABSTRACT Isoprene polymerization and copolymerization with ethylene can be carried out by using cationic half‐sandwich fluorenyl scandium catalysts in situ generated from half‐sandwich fluorenyl scandium dialkyl complexes Flu'Sc(CH2SiMe3)2(THF)n, activator, and AliBu3 under mild conditions. In ...

mehr

Seite 1 von 40
Suche per e-Mail abonnieren

Sie erhalten passend zu Ihrer Suche die neusten Suchergebnisse per E-Mail. Dieser Service ist für Sie kostenlos und kann jederzeit abbestellt werden.

Ihr Bowser ist nicht aktuell. Microsoft Internet Explorer 6.0 unterstützt einige Funktionen auf Chemie.DE nicht.