Hydroxyl-functionalized polypropylenes - Crystallinity and structure

Jolanta E. Marszalek-Kempke, Sahil Gupta, M. Cakmak, R. A. Weiss, T. C. Chung

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

OH-modificd polypropylencs, PPOH, have intermolecular H-bonding between the OH groups that affect the polypropylene (PP) structure and influence its thermal properties. This paper discusses the effects of OH functionality on the crystalline structure and thermal properties of PPOH annealed in a partially melted state, which is typically used in the bixaxial orientation of PP for capacitor films. Biaxial orientation of PP improves its voltage breakdown strength [1]. During the stretching process, changes occur in the morphology of the PP due to re-crystallization, which influences the ability to stretch the film and achieve suitable orientation of the crystals. In this study, recrystallization of PPOH were observed during annealing, which changed the thickness of the crystalline lamellae, but did not alter the a-monoclinic crystal structure. Thermal annealing produced kebab-like crystals and the amount of crystallinity decreased with increasing annealing temperature.

Original languageEnglish (US)
Title of host publication71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013
PublisherSociety of Plastics Engineers
Pages2408-2411
Number of pages4
ISBN (Print)9781632665300
StatePublished - 2013
Event71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013 - Cincinnati, OH, United States
Duration: Apr 22 2013Apr 24 2013

Publication series

NameAnnual Technical Conference - ANTEC, Conference Proceedings
Volume3

Other

Other71st Annual Technical Conference of the Society of Plastics Engineers 2013, ANTEC 2013
CountryUnited States
CityCincinnati, OH
Period4/22/134/24/13

All Science Journal Classification (ASJC) codes

  • Chemical Engineering(all)
  • Polymers and Plastics

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