نتایج جستجو برای: opening polymerization

تعداد نتایج: 78293  

Journal: :Chemical communications 2011
Antoine Debuigne Matthieu Schoumacher Nicolas Willet Raphael Riva Xiaomin Zhu Stephan Rütten Christine Jérôme Christophe Detrembleur

The photoinitiated cobalt-mediated radical polymerization enables the synthesis of novel α-functional and α,ω-telechelic polymers. In combination with ring-opening polymerization, it also produces new amphiphilic copolymers which self-assemble into flower-like vesicles in water.

Journal: :Molecules 2018
Xing-Yu Sun Wei-Min Ren Si-Jie Liu Yin-Bao Jia Yi-Ming Wang Xiao-Bing Lu

Lewis pair polymerization is a powerful method for preparing soluble polymers bearing pendant active vinyl groups by directly polymerizing dissymmetric divinyl polar monomers. Herein, we present a strategy for synthesizing block and brush copolymers via tandem Lewis pair polymerization of methacrylates, "thiol-ene" click reaction and organocatalytic ring-opening polymerization of lactide.

Journal: :Chemical communications 2012
Cuiling Xu Insun Yu Parisa Mehrkhodavandi

An ethoxy-bridged dinuclear indium catalyst was used for the ring opening polymerization of the cyclic ester β-butyrolactone to form the biodegradable polyester poly(hydroxybutyrate) (PHB). The catalyst shows remarkable activity and control during polymerization, allowing for formation of diblock polymers. Addition of high ratios of alcohols to the catalyst leads to fast chain transfer and immo...

Journal: :Biomacromolecules 2007
Madhavan Nallani Hans-Peter M de Hoog Jeroen J L M Cornelissen Anja R A Palmans Jan C M van Hest Roeland J M Nolte

Polystyrene-polyisocyanopeptide (PS-PIAT) polymersomes containing CALB in two different locations, one in the aqueous inner compartment and one in the bilayer, were investigated for enzymatic ring-opening polymerization of lactones in water. It is shown that the monomers 8-octanolactone and dodecalactone yield oligomers with this polymersome system. It is also observed that the polymerization a...

2010
Zengshe Liu Sevim Z. Erhan

Ring-opening polymerization of epoxidized soybean oil (ESO) catalyzed by boron trifluoride diethyl etherate (BF3 OEt2) in methylene chloride was conducted in an effort to develop useful biodegradable polymers. The resulting polymerized ESO (PESO) were characterized using infrared (IR) spectroscopy, differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), H NMR, C NMR, solid st...

Journal: :Bulletin of the Chemical Society of Japan 1967

Journal: :Bulletin of the Chemical Society of Japan 1966

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