Photodegradation mechanisms in poly(2,6-butylenenaphthalate- co-tetramethyleneglycol) (PBN–PTMG). I: influence of the PTMG content

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 cond...

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Bibliographic Details
Published in:Polymer degradation and stability 2005-05, Vol.88 (2), p.251-255
Main Authors: Nagai, Yasutaka, Nakamura, Daisuke, Miyake, Tomoyuki, Ueno, Hitoshi, Matsumoto, Naomi, Kaji, Atsushi, Ohishi, Fujio
Format: Article
Language:English
Subjects:
Applied sciences
Exact sciences and technology
Gel
Hard-segment
Photodegradation
Physicochemistry of polymers
Poly(2,6-butylenenaphthalate- co-polytetramethyleneglycol)
Polymerization
Polymers and radiations
Soft-segment
Thermoplastic polyester elastomer
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Summary: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.
ISSN:0141-3910
1873-2321
DOI:10.1016/j.polymdegradstab.2004.10.016