The quiescent isothermal crystallization kinetics of polypropylene was studied as a function of molecular weight (M w ), amount of ethene, and amount of maleic anhydride and acrylic acid grafting. Differential scanning calorimetry and polarized light optical microscopy were used to follow this kinet
Comparative study on quiescent crystallization kinetics of isotactic polyolefins
β Scribed by Jaein Suh; James L. White
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 281 KB
- Volume
- 106
- Category
- Article
- ISSN
- 0021-8995
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The melt crystallization process of isotactic polystyrene ( i-PS) was studied by means of in situ Fourier transform infrared (FTIR) spectroscopy, with a focus on the conformational changes during the induction period. The spectra obtained during the induction period suggested the occurrence of some
## Abstract The nonβparallel chain structure determined for Ξ³βphase isotactic polypropylene (Ξ³βiPP) is confirmed by Rietveld analysis for highly isotactic high molecular mass iPP crystallized at 200 MPa. The new refinement shows that: (i) stereoregularity or crystallization pressure do not signific