期刊
POLYMER DEGRADATION AND STABILITY
卷 88, 期 2, 页码 251-255出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymdegradstab.2004.10.016
关键词
poly(2,6-butylenenaphthalate-co-polytetramethyleneglycol); thermoplastic polyester elastomer; photodegradation; soft-segment; hard-segment; gel
We have investigated the mechanisms of the photodegradation of poly(2,6-butylenenaphthalate-co-tetramethyleneglycol) (PBN-PTMG) using polychromatic radiation and have analyzed its photodegradation products. As PTMG contents increase, the degree of photodegradation rises. Under our experimental conditions, we concluded that the polymer degradation occurs mainly in the ether parts of the soft-segments, where photo-irradiation generates ester bonds, aldehyde, formate and propyl end groups, and, we believe, crosslinking as well. (c) 2004 Elsevier Ltd. All rights reserved.
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