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Fourier Transform Infrared Spectroscopy study of polymorphism in propylene-co-1-pentene copolymers: Trigonal form identification

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Arranz Andrés, Javier and Orden Hernández, María Ulagares de la and Martínez Urreaga, Joaquín and Gómez-Elvira, José Manuel and Pérez Tabernero, Ernesto and Cerrada García, María Luisa (2015) Fourier Transform Infrared Spectroscopy study of polymorphism in propylene-co-1-pentene copolymers: Trigonal form identification. European Polymer Journal, 63 . pp. 227-236. ISSN 0014-3057

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Official URL: http://dx.doi.org/10.1016/j.eurpolymj.2014.12.016


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Abstract

Several regularity bands of the new trigonal form of iPP are identified in a real time FTIR study on a series of random propylene-co-1-pentene copolymers within a broad 1-pentene composition range. Some of them have been already reported for propylene-1-hexene copolymers. Moreover the coexistence of the different crystalline structures developed by these copolymers have been studied. Analysis of the real time evolution of IR regularity bands during heating of these copolymers confirms that when trigonal polymorph is developed its presence affects either the location or intensity of other common regularity bands. Conventional X-ray experiments at room temperature have been also performed to attain the required information on the different polymorphs existing at those distinct compositions analyzed. Additionally, DSC measurements and real-time variable temperature synchrotron experiments have been carried out to ascertain the phase transformations that take place on heating.


Item Type:Article
Uncontrolled Keywords:Propylene-co-1-pentene copolymers; FTIR spectroscopy; Crystalline structures; Trigonal form
Subjects:Sciences > Chemistry > Plastics industry
Sciences > Chemistry > Chemistry, Technical
Sciences > Chemistry > Chemistry, Organic
ID Code:29640
Deposited On:08 May 2015 10:13
Last Modified:11 May 2015 10:29

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