Low temperature radiation-induced polymerization of 2-hydroxyethyl methacrylate for polymer matrix preparation

✍ Scribed by M. Carenza; G. Palma; S. Lora; F. Filira

• Publisher: Elsevier Science
• Year: 1987
• Tongue: English
• Weight: 462 KB
• Volume: 23
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(87)90117-0

✦ Synopsis

Radiation-induced polymerizations of carefully purified 2-hydroxyethyl methacrylate in the presence of methanol in various proportions were carried out at -78°C. The polymerization kinetics were found to be markedly influenced by the solvent amount and roughly to follow a first order law with respect to the monomer. Viscometric and light-scattering measurements were carried out on poly(2-hydroxyethyl methacrylate) samples dissolved in 2-methoxyethanol; the relationship between [r/] and 34" w was established and found to agree with results reported by other authors with polymer samples prepared at normal temperatures. By assuming the most probable molecular weight distribution, the chain transfer constant to the solvent was calculated. The porosity of polymer matrices obtained from monomer-water mixtures was also investigated using optical microscopy.