Aromatic Polyester-Polysiloxane Block Copolymers: Multiphase Transparent Damping Materials.
Abstract
This research describes the synthesis and characterization of multiphase, transparent block copolymers that are potential candidates for passive damping applications in large space structures. Relatively high molecular weight polysiloxane-polyarylester block copolymers were prepared by two different synthetic routes. A solution technique was used to synthesize well-defined, perfectly alternating block copolymers by reacting a disfunctional hydroxyl-terminated polyarylester obligomer. A second approach involved the preparation of a segmented (or random) block copolymer by an interfacial, phase-transfer technique in which various polyarylester block lengths are formed during the copolymerization by reacting bisphenol-A, terephthaloyl chloride, and isophthaloyl chloride with a disfunctiinal aminopropyl-terminated siloxane block compositions (Dimethyl,
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 02, 1986
- Accession Number
- ADA182623
Entities
People
- James E. Mcgrath
Organizations
- Virginia Tech