Molecular weight relations for crosslinking of chains with length and site distribution

Douglas R. Miller, Christopher W. Macosko

Research output: Contribution to journalArticlepeer-review

46 Scopus citations

Abstract

Many polymer networks are formed by crosslinked polymer chains through reactive sites distributed along the chains. How these sites are distributed as well as the chain length distribution can have a significant effect on properties like the gel conversion and molecular weight. Previous treatments have used simplifying approximations. In this paper we eliminate these approximations and derive computational formulae for weight average molecular weight and gel point for polymer chains of any length and reactive site distribution. Three types of crosslinking are considered: direct coupling of chains (homopolymerization), direct coupling through propagation, and coupling through copolymerization with small monomers.

Original languageEnglish (US)
Pages (from-to)2441-2469
Number of pages29
JournalJournal of Polymer Science Part B: Polymer Physics
Volume25
Issue number12
DOIs
StatePublished - Dec 1987

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