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X‐ray diffraction analysis technique for determining the polymer crystallinity in a polyphenylene sulfide composite
Author(s) -
Lee T. H.,
Boey F. Y. C.,
Khor K. A.
Publication year - 1995
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.750160606
Subject(s) - crystallinity , materials science , composite material , composite number , sulfide , thermoplastic , creep , polymer , diffraction , metallurgy , physics , optics
Abstract The degree of crystallinity in polymers is commonly known to significantly affect their mechanical properties. To that extent, it also affects the mechanical properties—such as compression, buckling, and creep—of thermoplastic composites that are matrix dominant. For this reason, it is important that the degree of crystallinity in a thermoplastic composite be precisely determined, which is the focus of this paper. In particular, the crystallinity for a thermoplastic poly(phenylene sulfide) composite reinforced with glass fibers is determined using an X‐ray diffraction technique (XRD). While conventional methods have been adopted for homogeneous phases, a modified method has been adopted to account for the heterogeneous nature of the composite. The results have also been compared with results obtained using DSC and DMA techniques, indicating that the XRD method yielded lower values, which are considered to be more accurate. This was attributed to the absence of a recrystallization effect in the XRD method, which was unavoidable in the other two methods.