The dependence of glass transition temperature on molecular weight for poly(propylene oxide) and poly(butylene oxide)
โ Scribed by Faucher, J. A.
- Publisher
- Wiley (John Wiley & Sons)
- Year
- 1965
- Tongue
- English
- Weight
- 113 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0449-2986
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30 g of the ionene poly[(dimethylimino)decamethylene bromide] were fractionated by a continuous counter-current extraction method (CPF) using ethylene glycol monoethyl ether as the solvent and diisopropyl ether as the non-solvent component. The efficiency of the separation was checked by viscometry
The glass transition temperature of amorphous and fractionated poly(ethylene terephthalate) has been measured by differential scanning calorimetry. The application of the Fox-Flory equation for the range of molecular weights between 37100 and 4500 gives the values of Tg~ =342.4 K and Kg=51200. The l
Printed i~ Great Britai~ Pergamon Journals Ltd SHORT COMMUNICATIONS MOLECULAR WEIGHT AND TACTICITY EFFECTS ON THE GLASS TRANSITION OF POLY(ACRZLIC ACID ) by JOHN M.G.COWIE(~ a)(c) IAIN J.McEWEN (a) and M.TERESA @ARAY (b)