Poly(butyl acrylate-g-styrene) graft copolymers were prepared by free-radical polymerization using a polystyrene macromonomer carrying a methacryloyloxy group at the chain end and they were characterized by size-exclusion chromatography, and Fourier transform infrared spectroscopy. Glass transition
Electrical properties of tri-n-butyl tin acrylate-methylmethacrylate copolymers
β Scribed by S. H. El-Hamouly; N. N. Messiha; K. N. Abd El Nour
- Publisher
- Springer
- Year
- 1994
- Tongue
- English
- Weight
- 382 KB
- Volume
- 29
- Category
- Article
- ISSN
- 0022-2461
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β¦ Synopsis
The copolymerization of tri-n-butyl tin acrylate (TBTA) with methylmethacrylate (MMA) has been investigated in dioxane. The composition of these copolymers was determined quantitatively by 1a nuclear magnetic resonance (NMR) spectroscopy. The tin contents were estimated by gravimetric as well as thermogravimetric techniques (TGA). The reactivity ratio of such copolymers was estimated by application of the Kelen-Tudos method. The dielectric properties of the copolymers have been studied over a frequency range of 100-50 kHz at different temperatures from 20 to 70 ~ The electrical conductivity for such copolymers was also measured. The results are interpreted in terms of the tin content of the copolymers.
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