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- Title
Macrostructure of anisotropic shape memory polymer films studied by the molecular probe method.
- Authors
Kondratov, Alexander P.; Cherkasov, Egor P.; Paley, Vladislav; Volinsky, Alex A.
- Abstract
An anisotropic copolymer film of vinyl chloride and vinyl acetate, which has shape memory properties, was investigated by the molecular probe method, thermomechanical analysis, and scanning calorimetry. It was found that the amorphous‐crystalline structure and the stress–strain state of the surface layer of the film differ from the structure and state of the inner layers. The molecular probe (limited diffusion of a solvent into the surface layer of the film) revealed the localization of the elastic deformation energy of a film, which was rapidly cooled in a stressed state during production. It is shown that destroying/crushing the stressed macrostructure of the film surface via plasticization and dissolution of the copolymer, eliminates the effects of the elastic energy release during thermally stimulated shrinkage.
- Subjects
MOLECULAR probes; POLYMER films; MONOMOLECULAR films; SHAPE memory polymers; VINYL chloride; VINYL acetate; ELASTIC deformation
- Publication
Journal of Applied Polymer Science, 2021, Vol 138, Issue 15, p1
- ISSN
0021-8995
- Publication type
Article
- DOI
10.1002/app.50176