Improved Analysis of Copolymerization Involving Participation of Cormonomer Complexes

Autor:	Rudolf E. Cals, David J. Hill, James H. O'Donnell, P.W. O'Sullivan, Ronald G. Farmer
Rok vydání:	1980
Předmět:	chemistry.chemical_compound Sequence Distribution (mathematics) Probability theory Chemistry Comonomer General Engineering Copolymer Thermodynamics General Medicine Composition (combinatorics) Least squares Equilibrium constant
Zdroj:	Industrial & Engineering Chemistry Product Research and Development. 19:412-415
ISSN:	1541-4841 0196-4321
DOI:	10.1021/i360075a024
Popis:	Interaction between comonomers may lead to formation of an association dimer or donor-acceptor complex, which may participate in copolymerization. Probability theory has been used to derive equations relating the copolymer composition and sequence distribution for a particular comonomer composition to the equilibrium constant for complex formation and six reactivity ratios. A multi-dimensional, least squares, minimization procedure is described for deriving “best estimates” of these parameters, without recourse to approximations. Measurements of sequence distributions, for example by 13c NMR, provide a method to confirm the involvement of comonomer complexes. Physical and mechanical properties of copolymers are influenced by sequence distribution and hence by complex participation in the copolymerization.
Databáze:	OpenAIRE
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