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Molecular aggregation in poly(vinyl chloride). III. Role of molecular structure

✍ Scribed by Ahmed H. Abdel-Alim

Publisher: John Wiley and Sons
Year: 1975
Tongue: English
Weight: 336 KB
Volume: 19
Category: Article
ISSN: 0021-8995
DOI: 10.1002/app.1975.070190811

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✦ Synopsis

The present study offers a visualization of the process of molecular aggregation in PVC polymerized at low temperatures in bulk. "Kinks" along with the chains are responsible for molecular entanglement with subsequent microcrystallization of the syndiotactic sequences. The crystallites act as bonding nuclei. The "kinks" are the result of the different chain conformations of isotactic and syndiotactic sequences. The number of "kinks" increases on lowering the polymerization temperature both because the chains are longer and also because of the more frequent switching between isotactic and syndiotactic placements.

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