Siloxane-Polypivalolactone Thermoplastic Elastomers.

摘要

This paper describes the synthesis of crystalline, multiphase siloxane polymers based on the aliphatic polyester, polypivalolactone. The synthesis consists of the hydrolytic copolymerization of dichlorodimethyl silane and dichloromethyl-3-cyanopropyl silane. During the copolymerization, the nitrile group is hydrolyzed to the acid, which in turn, can act as an initiator site for pivalolactone grafting. These graft copolymers are high in molecular weight and can be synthesized such that the content of the crystalline phase can be varied with ease. Structure proof is provided along with a detailed description of the synthesis itself. Keywords: Microphase separation; Reprints. (aw)