Polymer paperAlternating block copolymers of aromatic poly(ether sulphone) and poly(dimethylsiloxane) by hydrosilylation

Add time:08/24/2019    Source:sciencedirect.com

Alternating block copolymers of aromatic poly(ether sulphone) (PSU) and poly(dimethylsiloxane) (PDMS) were prepared via Pt-catalysed hydrosilylation of α,Ω-di(vinylbenzyl)PSU or α,Ω-di(allylether)PSU with α,Ω-di(silane)PDMS. The vinyl functionalized PSUs were prepared by Williamson phase transfer catalysed (PTC) etherification of α,Ω-di(hydroxyphenyl)PSU with p-chloromethylstyrene or allyl bromide (chloride), respectively. The block copolymers prepared were characterized by nuclear magnetic resonance (n.m.r.), gel permeation chromatography (g.p.c.), differential scanning calorimetry (d.s.c.) and membrane osmometry. These block copolymers showed good degrees of chain extension and phase separation into rubbery PDMS and glassy PSU domains.

We also recommend Trading Suppliers and Manufacturers of poly(d(Tm(5)C)).poly(d(GA)).poly(d(m(5)CT)) (cas 107824-41-9). Pls Click Website Link as below: cas 107824-41-9 suppliers

Prev:A family of double helices of alternating poly(γ-benzyl-d-l-glutamate), a stereochemical model for gramicidin A
Next:Photo-oxidative degradation of poly(ethylene oxide)-copper chloride complexes)