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

Author

Yingjie Li
Wanxuan Kang
James O. Stoffer, Missouri University of Science and TechnologyFollow
Benjamin Chu

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.

Recommended Citation

Y. Li et al., "Effect of Hard-segment Flexibility on Phase Separation of Segmented Polyurethanes," Macromolecules, American Chemical Society (ACS), Jan 1994.

The definitive version is available at https://doi.org/10.1021/ma00080a043

Department(s)

Chemistry

International Standard Serial Number (ISSN)

0024-9297

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

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

Publication Date

01 Jan 1994