NDLI: Structure and properties of β-polypropylene reinforced by polypropylene fiber and polyamide fiber

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Structure and properties of β-polypropylene reinforced by polypropylene fiber and polyamide fiber

Chinese Journal of Polymer Science : Volume 32, Issue 3, March 2014

Chinese Journal of Polymer Science : Volume 32, Issue 2, February 2014

Chinese Journal of Polymer Science : Volume 32, Issue 1, January 2014

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Structure and properties of β-polypropylene reinforced by polypropylene fiber and polyamide fiber

Content Provider	Springer Nature Link
Author	Liu, Qi Li, Hui hui Yan, Shou ke
Copyright Year	2014
Abstract	Matrix/fiber composites of β-form isotactic polypropylene (iPP) matrix and α-iPP or PA6 fibers were prepared by laminating technique under different preparation temperatures. The mechanical properties and interfacial morphologies of these composites were studied by tensile test, optical microscopy and scanning electron microscopy, respectively. The experimental results show that the tensile yield load and tensile modulus of β-iPP/PA6 matrix/fiber systems increased significantly at the expense of elongation at break. These mechanical properties show essentially no dependence on the sample preparation temperature. On the other hand, the mechanical properties of iPP matrix/fiber single polymer composites depend strongly on the sample preparation temperature. At low sample preparation temperature, e.g., 172 °C, the solid α-iPP fiber induces α-iPP crystallization, leading to the formation of α-iPP transcrystalline layer around the fiber. This results in a remarkable increment of the tensile yield load and tensile modulus. The elongation at break is also much better than that of the iPP/PA6 matrix/fiber system. It reflects a better interfacial adhesion of the single polymer composite compared with the iPP/PA6 composite. At higher sample preparation temperature, e.g., 174 °C or 176 °C, the partial surface melting of the oriented fiber allows interdiffusion of iPP molecular chains in the molten fiber and matrix melt. The penetration of matrix chains into the molten iPP fiber results in some iPP molecular chains being included partially in the recrystallized fiber and the induced β-transcrystalline layers. This kind of configuration leads to an improvement of interfacial adhesion between the fiber and matrix, which causes a simultaneous increase of the tensile yield load, tensile modulus and elongation at break of β-iPP.
Starting Page	509
Ending Page	518
Page Count	10
File Format	PDF
ISSN	02567679
Journal	Chinese Journal of Polymer Science
Volume Number	32
Issue Number	4
e-ISSN	14396203
Language	English
Publisher	Chinese Chemical Society and Institute of Chemistry, CAS
Publisher Date	2014-03-01
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polypropylene Composite Mechanical property Interfacial morphology Polymer Sciences Industrial Chemistry/Chemical Engineering Characterization and Evaluation of Materials Condensed Matter Physics
Content Type	Text
Resource Type	Article
Subject	Organic Chemistry Chemical Engineering Polymers and Plastics

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