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Surface crystalline characteristics of polyurethane investigated by atomic force microscopy

✍ Scribed by Mei Xuan Xu; Wen Guang Liu; Chun Lu Wang; Zhen Xiang Gao; Kang De Yao

Publisher
John Wiley and Sons
Year
1996
Tongue
English
Weight
647 KB
Volume
61
Category
Article
ISSN
0021-8995

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✦ Synopsis

SYNOPSIS

A polyester-urethane was synthesized by the reaction of 2,4-toluylene diisocyanate (TDI) with poly(buty1ene glycol adipate) (PBGAD) using 1,4-butanediol (BDO) as a chain extender. Atomic force microscopy was employed to examine the surface morphologies of polyurethane (PU) films formed by heat treatment as well as at room temperature. At both conditions the surface of the PU film appeared as a spherulitic structure with a varied diameter and vertical height. Furthermore, the crystalline structure of heat-treated film was denser than that of the film formed at ambient.

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