Evaluation of the Length of Primary Chains in Cross-Linked Poly(methacrylate)s
Abstract:Two series of cross-linked polymers were examined by equilibrium swelling: poly(methyl methacrylate)cross-linked with different amounts of triethylene glycol dimethacrylate and poly(urethane dimethacrylate)s derived from dicarbamates of oligoethylene glycols monomethacrylates and aromatic diisocyanates. The method of estimation of the length of primary chains has been proposed based on the full form of the Flory-Rehner equation. This required comparing the network parameter values obtained by swelling and those derived from some other sources. In some cases the results had no physical meaning, whereas in others they appeared to be consistent. The latter for poly(urethane dimethacrylate)s yielded the length of poly(methacrylate)primary chains in the range of two to eight, which seemed to be a reasonable result.
Document Type: Research Article
Affiliations: 1: Department of Physical Chemistry and Technology of Polymers, Silesian University of Technology, Gliwice, Poland 2: Department of Organic Chemistry, Bioorganic Chemistry and Biotechnology, Silesian University of Technology, Gliwice, Poland
Publication date: January 1, 2004