Influence of regioirregular structural units on the crystallization of isotactic polypropylene
2001; Wiley; Volume: 79; Issue: 2 Linguagem: Inglês
10.1002/1097-4628(20010110)79
ISSN1097-4628
AutoresAntonio Marigo, Carla Marega, Roberta Saini, Isabella Camurati,
Tópico(s)Fiber-reinforced polymer composites
ResumoSeven samples of isotactic polypropylene were examined to study the influence on the formation of the γ crystalline phase of possible regiodefects along the chain. Wide-angle X-ray diffraction allowed the determination of the percentage of the γ phase in the samples and 13C-NMR spectroscopy was used to correlate the development of the γ phase with the existence of regioirregular structural units along the chain. Furthermore, it was possible to appraise the contributions given by the different families of lamellae to the small-angle X-ray diffraction patterns. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 79: 375–384, 2001
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