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Reinforcing and toughening on poly(ether imide) by a novel thermo tropic liquid crystalline poly(ester‐imide‐ketone) with low content
Author(s) -
Xu Bing,
Zhang Yi,
Liu Siwei,
Chi Zhenguo,
Peng Xiangfang,
Lin Yongqiang,
Xu Jiarui
Publication year - 2009
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.21446
Subject(s) - materials science , imide , composite material , ultimate tensile strength , differential scanning calorimetry , miscibility , heat deflection temperature , flexural strength , thermoplastic , scanning electron microscope , izod impact strength test , polymer , polymer chemistry , physics , thermodynamics
Reinforcing and toughening effects on the thermoplastic poly(ether imide) (PEI) by a novel thermo tropic liquid crystalline poly(ester‐imide‐ketone) (TLCPEIK) with low content were studied in this work. The novel TLCPEIK with kink naphthalene structure in the backbone was synthesized in our laboratory. A series of in‐situ composites (TLCPEIK/PEI) with a low concentration of TLCPEIK(≤5 wt%) were prepared by direct extrusion. Tensile strength, flexural strength, and flexural modulus of the composites increased with increasing TLCPEIK content. Impact strength and elongation at break of the composites were enhanced greatly when compared with that of pure PEI. To explain the simultaneously reinforcing and toughening effects on PEI by TLCPEIK, miscibility and morphology of the composites were studied by differential scanning calorimetry (DSC) and scanning electron microscopy. The experimental results suggest that good compatibility of the components is beneficial to improve the ultimate properties of TLCPEIK/PEI in‐situ composites. POLYM. ENG. SCI., 2009. © 2009 Society of Plastics Engineers.