Title: PHASE TRANSITION AND DEGRADATION CHARACTERISTICS OF POLY(URETHANE-SILOXANE) COPOLYMERS
Page Range: p.151-159
Author(s): Jen-Taut Yeh; Yao-Chi Shu
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 15
Issue No: No.2
Abstract
The properties and characteristics of segmented polyurethane elastomers and polydimethyl siloxane (PDMS) are described. In this work, PDMS monomer was incorporated into the soft segment of polyurethane using a stepwise reaction between at least two bifunctional compounds (4,4′-diphenylmethane diisocyanate, hydroxyl-terminated PDMS and 1,4-butanediol) to improve the thermal properties of a typical PU. The phase transition and degradation characteristics of the poly(urethane-siloxane) copolymers were studied using DSC and TGA. 32 refs.
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