Novel approach to fibrillation of LCP in an LCP/PP blend

M. W. Lee; X. Hu; C. Y. Yue; L. Li; K. C. Tam; K. Nakayama

doi:10.1002/app.11157

Novel approach to fibrillation of LCP in an LCP/PP blend

M. W. Lee, X. Hu^*, C. Y. Yue, L. Li, K. C. Tam, K. Nakayama

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

37 Citations (Scopus)

Abstract

A novel concept of improving shear-induced fibrillation of liquid crystalline polymer (LCP) in LCP/thermoplastic blend systems was introduced. Silica fillers (SiO₂) were added to an LCP/polypropylene (PP) system to serve as a viscosity thickening agent and to improve the fibrillation of the LCP phase. The formation of LCP fibrils was found to enhance with the incorporation of 5-15 wt% of fillers. The presence of LCP fibrils improved the flow properties of the LCP/PP/SiO₂ composites. It was evident from the rheological and morphological studies that the addition of silica led to an increase of the aspect ratio of the LCP fibrils, which, in turn, should improve their effectiveness as reinforcements and/or toughening agents. Substantial improvement in LCP aspect ratio was achieved by the introduction of hydrophobic SiO₂ fillers in the PP/LCP blends.

Original language	English
Pages (from-to)	2070-2078
Number of pages	9
Journal	Journal of Applied Polymer Science
Volume	86
Issue number	8
DOIs	https://doi.org/10.1002/app.11157
Publication status	Published - Nov 21 2002
Externally published	Yes

ASJC Scopus Subject Areas

General Chemistry
Surfaces, Coatings and Films
Polymers and Plastics
Materials Chemistry

Keywords

Fillers
Liquid-crystalline polymers
Poly (propylene) (PP)
Reinforcement

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10.1002/app.11157

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title = "Novel approach to fibrillation of LCP in an LCP/PP blend",

abstract = "A novel concept of improving shear-induced fibrillation of liquid crystalline polymer (LCP) in LCP/thermoplastic blend systems was introduced. Silica fillers (SiO2) were added to an LCP/polypropylene (PP) system to serve as a viscosity thickening agent and to improve the fibrillation of the LCP phase. The formation of LCP fibrils was found to enhance with the incorporation of 5-15 wt% of fillers. The presence of LCP fibrils improved the flow properties of the LCP/PP/SiO2 composites. It was evident from the rheological and morphological studies that the addition of silica led to an increase of the aspect ratio of the LCP fibrils, which, in turn, should improve their effectiveness as reinforcements and/or toughening agents. Substantial improvement in LCP aspect ratio was achieved by the introduction of hydrophobic SiO2 fillers in the PP/LCP blends.",

keywords = "Fillers, Liquid-crystalline polymers, Poly (propylene) (PP), Reinforcement",

author = "Lee, {M. W.} and X. Hu and Yue, {C. Y.} and L. Li and Tam, {K. C.} and K. Nakayama",

year = "2002",

month = nov,

day = "21",

doi = "10.1002/app.11157",

language = "English",

volume = "86",

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journal = "Journal of Applied Polymer Science",

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TY - JOUR

T1 - Novel approach to fibrillation of LCP in an LCP/PP blend

AU - Lee, M. W.

AU - Hu, X.

AU - Yue, C. Y.

AU - Li, L.

AU - Tam, K. C.

AU - Nakayama, K.

PY - 2002/11/21

Y1 - 2002/11/21

N2 - A novel concept of improving shear-induced fibrillation of liquid crystalline polymer (LCP) in LCP/thermoplastic blend systems was introduced. Silica fillers (SiO2) were added to an LCP/polypropylene (PP) system to serve as a viscosity thickening agent and to improve the fibrillation of the LCP phase. The formation of LCP fibrils was found to enhance with the incorporation of 5-15 wt% of fillers. The presence of LCP fibrils improved the flow properties of the LCP/PP/SiO2 composites. It was evident from the rheological and morphological studies that the addition of silica led to an increase of the aspect ratio of the LCP fibrils, which, in turn, should improve their effectiveness as reinforcements and/or toughening agents. Substantial improvement in LCP aspect ratio was achieved by the introduction of hydrophobic SiO2 fillers in the PP/LCP blends.

AB - A novel concept of improving shear-induced fibrillation of liquid crystalline polymer (LCP) in LCP/thermoplastic blend systems was introduced. Silica fillers (SiO2) were added to an LCP/polypropylene (PP) system to serve as a viscosity thickening agent and to improve the fibrillation of the LCP phase. The formation of LCP fibrils was found to enhance with the incorporation of 5-15 wt% of fillers. The presence of LCP fibrils improved the flow properties of the LCP/PP/SiO2 composites. It was evident from the rheological and morphological studies that the addition of silica led to an increase of the aspect ratio of the LCP fibrils, which, in turn, should improve their effectiveness as reinforcements and/or toughening agents. Substantial improvement in LCP aspect ratio was achieved by the introduction of hydrophobic SiO2 fillers in the PP/LCP blends.

KW - Fillers

KW - Liquid-crystalline polymers

KW - Poly (propylene) (PP)

KW - Reinforcement

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U2 - 10.1002/app.11157

DO - 10.1002/app.11157

M3 - Article

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SN - 0021-8995

VL - 86

SP - 2070

EP - 2078

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

IS - 8

ER -

Novel approach to fibrillation of LCP in an LCP/PP blend

Abstract

ASJC Scopus Subject Areas

Keywords

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