NDLI: Modification of polyurethane by the lateral cross-linking using a modified poly(vinyl alcohol) for the improvement of tensile strength and the control of water vapor permeation

Content Provider	Springer Nature Link
Author	Chung, Yong Chan Song, Min Ju Kwon, Hyun A Chun, Byoung Chul
Copyright Year	2015
Abstract	The hydroxyl groups of poly(vinyl alcohol) (PVA) was capped with phenylisocyanate, ethylisocyanate, or octylisocyanate to reduce the hydrophilicity and to improve the compatibility with organic solvent. The modified PVA was used to laterally cross-link the polyurethane (PU), and a Control PU series containing free modified PVA was also prepared for comparison. The PVA cross-linking significantly improved the tensile strength, whereas the Control series did not. The thermal properties (T $_{ g }$, T $_{ m }$, and ΔH $_{ m }$) did not change with the incorporation of PVA cross-linking. The breaking strain of the PU series was not affected by the PVA cross-linking. The shape recovery and shape retention of the PU series remained high with the increase of PVA content. The low-temperature flexibilities of PU series was not changed by the PVA cross-linking, whereas the water vapor permeability was reduced by the PVA cross-linking.
Starting Page	1819
Ending Page	1829
Page Count	11
File Format	PDF
ISSN	12299197
Journal	Fibers and Polymers
Volume Number	16
Issue Number	9
e-ISSN	18750052
Language	English
Publisher	The Korean Fiber Society
Publisher Date	2015-10-03
Publisher Place	Seoul
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Poly(vinyl alcohol) Cross-linking Modification Lateral linking Urethane Polymer Sciences
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering Polymers and Plastics

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