Title

Effect of Hard-segment Flexibility on Phase Separation of Segmented Polyurethanes

Abstract

Demonstrated in this paper is the kinetic factor which can control whether the structure in segmented polyurethanes is phase-mixed or phase-separated. According to the solubility parameters, UMDT has greater hard and soft segment incompatibility than UHDI, while HDI/HBPA in UHDI has higher mobility than MDI/HBPA in UMDI due to flexible HDI. There is no observable phase separation in the former, while the latter gave rise to nearly complete phase separation.

Department(s)

Chemistry

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 1994 American Chemical Society (ACS), All rights reserved.


Share

 
COinS