The degradations have been studied by thermal volatilization analysis and thermogravimetry, with infrared and ultraviolet spectroscopic investigations of products. Under temperatureprogrammed heating conditions, PMVK first splits out water from adjacent side groups by a random process, giving a fuse
Structure and polymerization conditions of poly(methyl vinyl ketone)
โ Scribed by Elias Nasrallah; Sara Baylouzian
- Book ID
- 103347436
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 183 KB
- Volume
- 18
- Category
- Article
- ISSN
- 0032-3861
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Thermal stability and degradation behaviour have been studied for PVB and VB MVK copolymers spanning the whole composition range, using thermogravimetric analysis. The reactivity ratios in the radical copolymerization were determined by using an NMR technique, leading to q(VB) = 3.6 + 0.2 and r2(MVK
Blends of poly(viny1 methyl ketone) (PVMK) with poly(2-hydroxyethyl methacrylate) (PHEMA) and poly(epichlorohydrin) (PECH) were prepared by casting from a common solvent. It was found that all the PVMK blends are miscible and show a single, composition-dependent glass transition temperature (T,). Th