Journal of Thermal Analysis and Calorimetry
Volume/Issue:
Volume 91: Issue 3
Non-isothermal crystallization and crystalline structure Of PP/POE blends
Authors:
J. Ying

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S. Liu Huazhong University of Science and Technology Hubei Key Laboratory of Materials Chemistry and Service Failure, Department of Chemistry and Chemical Engineering Wuhan 430074 China

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F. Guo Huazhong University of Science and Technology Hubei Key Laboratory of Materials Chemistry and Service Failure, Department of Chemistry and Chemical Engineering Wuhan 430074 China

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X. Zhou Huazhong University of Science and Technology Hubei Key Laboratory of Materials Chemistry and Service Failure, Department of Chemistry and Chemical Engineering Wuhan 430074 China

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X. Xie

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Pages:
723–731
Online Publication Date:
16 Jun 2008
Publication Date:
01 Mar 2008
Article Category:
Research Article
DOI:
https://doi.org/10.1007/s10973-007-8586-6
Keywords:
crystal structure; non-isothermal crystallization; PP/POE blends
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Abstract  

Polypropylene (PP) /ethylene-octene copolymer (POE) blends with different content of POE were prepared by mixing chamber of a Haake torque rheometer. The crystallization behaviors and crystal structure of PP/POE blends were systematically investigated by differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD) and polarized optical microscopy (POM). The results showed that PP spherulites became defective and the crystallization behavior was influenced intensely with the introduction of POE. At the low content of POE, the addition of POE decreases the apparent incubation period (Δti) and the apparent total crystallization period (Δtc) of PP in blends due to the heterogeneous nucleation of POE, and small amount of β-form PP crystals form because of the existence of POE. However, at high content of POE, the addition of POE decreases the mobility of PP segments due to their strong intermolecular interaction and chain entanglements, resulting in retarding the crystallization of PP, decreasing in the amount of β-form PP crystals, and increasing in Δti and Δtc of PP in blends.

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Cover Journal of Thermal Analysis and Calorimetry
Journal of Thermal Analysis and Calorimetry
Print ISSN:
1388-6150
Online ISSN:
1572-8943

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Journal of Thermal Analysis and Calorimetry
Language English
Size A4
Year of
Foundation		 1969
Volumes
per Year		 1
Issues
per Year		 24
Founder Akadémiai Kiadó
Founder's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
Publisher Akadémiai Kiadó
Springer Nature Switzerland AG
Publisher's
Address		 H-1117 Budapest, Hungary 1516 Budapest, PO Box 245.
CH-6330 Cham, Switzerland Gewerbestrasse 11.
Responsible
Publisher		 Chief Executive Officer, Akadémiai Kiadó
ISSN 1388-6150 (Print)
ISSN 1588-2926 (Online)

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