Effect of the amount of oxazoline compatibilizer on the mechanical properties of liquid crystalline polymer/polypropylene blends

Shogo Takasuka; Tatsuhiro Takahashi

doi:10.1515/ipp-2021-4110

Article

Effect of the amount of oxazoline compatibilizer on the mechanical properties of liquid crystalline polymer/polypropylene blends

Shogo Takasuka and Tatsuhiro Takahashi

Published/Copyright: February 25, 2022

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From the journal International Polymer Processing Volume 37 Issue 1

Abstract

The effect of the amount of 2,2′-Bis(2-oxazoline) on the spectral, thermal, morphological, and tensile properties of polypropylene (PP)/liquid crystalline polymer (LCP)/maleic anhydride grafted PP (PP-g-MAH) blends was investigated. A wholly aromatic LCP having a low melting point, namely a AL-7000 copolyester was used, because it also uses a compatibilizer with a low decomposition temperature. As the amount of 2,2′-Bis(2-oxazoline) increased, the dispersibility of the LCP improved and the tensile properties were improved, but when it was added in excess, a loss in function was observed. In particular, when 0.5 wt% of 2,2′-Bis(2-oxazoline) were added, the tensile strength and elastic modulus were the highest, and cohesive fracture (fracture within the matrix, not at the PP/LCP interface) was observed in the scanning electron microscope image.

Keywords: compatibilization; interfacial strength; liquid crystalline polymer; polymer blends; polypropylene

Corresponding author: Shogo Takasuka, Graduate School of Organic Materials Science, Yamagata University, 4-3-16 Jonan, Yonezawa, Yamagata 992-8510, Japan, E-mail: thk68166@st.yamagata-u.ac.jp

Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
Research funding: None declared.
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.

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Received: 2021-03-14

Accepted: 2021-07-31

Published Online: 2022-02-25

Published in Print: 2022-03-28

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Articles in the same Issue

https://doi.org/10.1515/ipp-2021-4110

Keywords for this article

compatibilization; interfacial strength; liquid crystalline polymer; polymer blends; polypropylene