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Modeling molecular weight distribution of comb-branched graft copolymers

โœ Scribed by L. Gu; S. Zhu; A. N. Hrymak

Publisher
John Wiley and Sons
Year
1998
Tongue
English
Weight
255 KB
Volume
36
Category
Article
ISSN
0887-6266

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โœฆ Synopsis

Grafting one type polymer onto a different polymer type may yield a combbranched copolymer. The branching density has a significant effect on its overall molecular weight distribution. A general model is derived to describe the bivariate distribution of molecular weight and branching density for such comb copolymers. The model is applicable for various grafting mechanisms provided the side chains are randomly grafted onto the backbone. The determining parameters are the molecular weight distributions of backbone and side chains, and the branching density. Analytical expressions are obtained for the cases of the side chains having uniform and Schulz-Zimm distributions.

๐Ÿ“œ SIMILAR VOLUMES

Randomly branched bisphenol A polycarbon
Randomly branched bisphenol A polycarbonates. I. Molecular weight distribution modeling, interfacial synthesis, and characterization
โœ M. J. Marks; S. Munjal; S. Namhata; D. C. Scott; F. Bosscher; J. A. De Letter; B ๐Ÿ“‚ Article ๐Ÿ“… 2000 ๐Ÿ› John Wiley and Sons ๐ŸŒ English โš– 172 KB ๐Ÿ‘ 1 views

Randomly branched bisphenol A polycarbonates (PCs) were prepared by interfacial polymerization methods to explore the limits of gel-free compositions available by the adjustment of various composition and process variables. A molecular weight distribution (MWD) model was devised to predict the MWD,