Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6499
Title: A study of chemical and physical changes during biaxially oriented polypropylene film production
Authors: Ülkü, Semra
Balköse, Devrim
Arkış, Esen
Sipahioğlu, Muzaffer
Ülkü, Semra
Balköse, Devrim
Arkış, Esen
Sipahioğlu, Muzaffer
Izmir Institute of Technology. Chemical Engineering
Keywords: Biaxial orientation
Crystallinity
Melting endotherm
Polypropylene
Issue Date: 2003
Publisher: Walter de Gruyter GmbH
Source: Ülkü, S., Balköse, D., Arkış, E., and Sipahioğlu, M. (2003). A study of chemical and physical changes during biaxially oriented polypropylene film production. Journal of Polymer Engineering, 23(6), 437-456.
Abstract: Polypropylene films obtained during the biaxial orientation process were characterized by energy dispersive X-ray analysis (EDX), scanning electron microscopy. X-ray diffraction, differential scanning calorimetry, infrared spectroscopy. Inorganic particles with Al, Si, Na, Mg, Ti, K,O elements were present in biaxially oriented films. Polypropylene had molecules with both isotactic configuration and it was crystallized only in isotactic α phase. The films drawn in one and two directions had unit cells with b axis parallel to surface of the films. The antioxidants present in the films were consumed during processing, preventing polypropylene oxidation in air at high processing temperatures. One surface of the films contained less polypropylene and had functional groups rich in oxygen such as C=O and COO.
URI: http://hdl.handle.net/11147/6499
ISSN: 0334-6447
0334-6447
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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