The glass transition temperatures T g of butyl acrylate-methyl methacrylate copolymers obtained by free radical polymerization in 3 and 5 mol/L benzene solution have been measured using differential scanning calorimetry (DSC) and the values have been correlated using Johnston's equation with inter-i
Vinyl derivatives of sucrose: glass transition temperatures of copolymers
โ Scribed by R.D. Guthrie; A.D. Jenkins; T.J. Lucas
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 261 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0014-3057
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โฆ Synopsis
Derivatives of penta-O-acetyl sucrose containing up to three p-vinylbenzoate groups have been prepared and copolymerised with styrene and with methyl methacrylate. The glass transition temperatures of the copolymers were determined both before and after mild hydrolysis of the acetyl protecting groups; the results are discussed in terms of the structures of the polymers.
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Glass transition temperatures of poly(ethyl acrylate-vinylidene chloride) and reactivit.~ ratios for the copolymerization of the parent monomers are reported. All the copolymers have glass transition temperatures higher than those of polyethylacrylate or polyvinylidene chloride: the copolymer contai