Molecular mechanism for elongation: poly(vinylidene fluoride) form II
β Scribed by Y. Takahashi; T. Zakoh; N. Hanatani
- Book ID
- 104868136
- Publisher
- Springer
- Year
- 1991
- Weight
- 283 KB
- Volume
- 269
- Category
- Article
- ISSN
- 0340-255X
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π SIMILAR VOLUMES
The dependence of shear and elongational viscosity on the molecular weight of poly(vinylidene fluoride) has been studied using a capillary rheometer. The elongational viscosity was evaluated based on Cogswell's method with two types of capillaries: capillary length (L)/capillary diameter (D) Ο 10 mm
## Abstract A new model based on disorder phenomenon concerning the symmetry is proposed for the crystalline structure of form II of poly(vinylidene fluoride) (PVDF). The disorder has the effect that the crystal possesses no unique space group but it consists alternately of monoclinic regions with