Copolymères du chlorure de vinylidène avec l'acrylonitrile, le chlorure de vinyle et le méthacrylate de méthyle, 2. Fusion — utilisation d'un modèle de simulation
✍ Scribed by Dumont, Bernard ;Berticat, Philippe ;Guillot, Jean
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1981
- Weight
- 363 KB
- Volume
- 182
- Category
- Article
- ISSN
- 0025-116X
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✦ Synopsis
Abstract
The melting point depression in vinylidene chloride copolymers, when introducing an increasing number of units B = vinyl chloride, acrylonitrile or methyl methacrylate is studied in this paper. A Monte‐Carlo simulation model of chains growing and crystallization is applied and allows to know the proportion X~c~ of defects in the crystalline phase. An equation given by Sanchez is then applied, and the excess energy ε of the defect created by the incorporation of a B unit in the crystalline vinylidene chloride lattice is calculated.
📜 SIMILAR VOLUMES
In order to assign all -CH,CI resonances observed by ' H NMR in poly(viny1 chloride), (PVC), a preliminary study of the diastereoisomers of molecular models for the groups CH2Cl-CHCI- [11] and ClCH,-CH< [IV] is used, in conjunction with spin echo experiments. The complex region [3,5 -4,O ppm] which