Radiation-induced polymerization of glass-forming systems. V. Initial polymerization rate in binary glass-forming systems
The radiation-induced polymerization of binary systems consisting of glass-forming monomer and glass-forming solvent in supercooled phase was studied. The initial polymerization rates were markedly affected by T/sub g/ (glass transition temperature) and T/sub v/ of the system (30-50 deg C higher than T/sub g/), which are functions of the composition. The composition and temperature dependence of initial polymerization rate in binary glass-forming systems were much affected by homogeneity of the polymerization system and the T of the glass- forming solvent. The composition and temperature dependences in the glycidyl methacrylate --triacetin system as a typical homogeneous polymerization system were studied in detail, and the polymerizations of hydroxyethyl methacrylate triacetln and hydroxyethyl methacrylate --isoamyl acetate systems were studied for the heterogeneous polymerization systems; the former illustrates the combination of lower T/sub g/ monomer and higher T/sub g/ solvent and the latter typifies a system consisting of higher T/sub g/ monomer and lower T/sub g/ solvent. All experimental results for the composition and temperature dependence of initial polymerization rate in binary glass-forming systems could be explained by considering the product of the effect of the physical effect relating to T/sub v/ and T/sub g/ of the system and the effect of composition in normal solution polymerization at higher temperature, which was also the product of a dilution effect and a chemical or physical acceleration effect. (auth)
- Research Organization:
- Japan Atomic Energy Research Inst., Takasaki
- Sponsoring Organization:
- USDOE
- NSA Number:
- NSA-29-012601
- OSTI ID:
- 4370371
- Journal Information:
- Journal of Polymer Science, Polymer Chemistry Edition, Vol. 11, Issue 6; Other Information: Orig. Receipt Date: 30-JUN-74; ISSN 0360-6376
- Country of Publication:
- Country unknown/Code not available
- Language:
- English
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