Low temperature annealing of isotactic polypropylene by differential scanning calorimetry
β Scribed by W Ken Busfield; Chris S Blake
- Publisher
- Elsevier Science
- Year
- 1980
- Tongue
- English
- Weight
- 570 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0032-3861
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## Abstract A series of graft polymers having polypropylene (PP) backbone and poly(ethyleneβ__co__βpropylene) (EPR) side chains was prepared. PP backbone molecular weight (__M__~__n__~) was 28β98 kg/mol, EPR side chain __M__~__n__~ was 2.6β17 kg/mol, and EPR content was 0β16 wt %. In this work, the
Temperature-modulated differential scanning calorimetry reveals distinct differences in the kinetics of the low-temperature phase transitions of polytetrafluoroethylene. The triclinic to trigonal transition at 292 K is partially reversible as long it is not complete. As soon as the total sample is c