Solvent effect in the copolymerization of methyl methacrylate with oligoglycol dimethacrylate

✍ Scribed by Akira Matsumoto; Hideaki Matsuo; Hiroyuki Ando; Masayoshi Oiwa

• Book ID: 103076263
• Publisher: Elsevier Science
• Year: 1989
• Tongue: English
• Weight: 225 KB
• Volume: 25
• Category: Article
• ISSN: 0014-3057
• DOI: 10.1016/0014-3057(89)90224-3

✦ Synopsis

Methyl methacrylate was radically copolymerized with oligoglycol dimethacrylate using dioxane or n-butyl acetate as good and poor solvents, respectively. The delay between actual gel point and the theoretical one was much larger in a good solvent. The primary chain length, closely related to gelation, was relatively shortened for the polymer obtained in a poor solvent. The occurrence of intramolecular cyclization, leading to the formation of loop structures, was reduced in a poor solvent. The relationships between intrinsic viscosity or root-mean square radius of gyration and weight-average molecular weight were found and they are discussed in terms of the solvent effect on intramolecular cyclization and crosslinking.