After investigating kinetics of the UV photodegradation of PET film samples having a thickness of 4.4 m, we found that the photodegradation process takes place in two steps: a very rapid initial step followed by a normal step. This phenomenon is explained by using a concept of "weak links." We have
Structural changes during photodegradation of poly(ethylene terephthalate)
โ Scribed by G. J. M. Fechine; R. M. Souto-Maior; M. S. Rabello
- Book ID
- 110403356
- Publisher
- Springer
- Year
- 2002
- Tongue
- English
- Weight
- 96 KB
- Volume
- 37
- Category
- Article
- ISSN
- 0022-2461
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The sample dimensional changes accompanying diffusion with induced crystallization in amorphous poly(ethy1ene terephthalate) (PET) films are analyzed. Initially, the film's lateral area remains practically constant, but near the end of the process, it increases rapidly, consistent with non-Fickian m