Nmr study of styrene-methyl methacrylate copolymer obtained by anionic polymerization
β Scribed by Ito, Koichi ;Yamashita, Yuya
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1965
- Tongue
- English
- Weight
- 187 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0449-2986
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π SIMILAR VOLUMES
## Abstract Methyl methacrylate (MMA) was polymerized by thiophenol without oxidants. Hydroquinone had no effect on the polymerization, indicating that the polymerization proceeded via a nonβradical process. Since other monomers with an __x__,Ξ²βunsaturated carbonyl group polymerized similarly, the
The o-Ps lifetime 3 and the intensity I 3 of ST-AN copolymers and ST-MMA copolymers have been determined by using the positron annihilation technique. The average free volume hole radius R is estimated according to Tao's and Eldrup's model. The result shows that the average free volume hole size mai