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Polymers 2018, 10(9), 1024; https://doi.org/10.3390/polym10091024

Hyperbranched Liquid Crystals Modified with Sisal Cellulose Fibers for Reinforcement of Epoxy Composites

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* ,
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* and *
Key Laboratory of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education, School of Material Science and Engineering, Guilin University of Technology, Guilin 541004, China
These authors contributed equally to this work.
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Authors to whom correspondence should be addressed.
Received: 15 August 2018 / Revised: 8 September 2018 / Accepted: 10 September 2018 / Published: 14 September 2018
(This article belongs to the Special Issue Modification of Natural Fibres to Improve Biocomposites Performances)
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Abstract

Well-defined functionalized sisal cellulose fibers (SCFs) grafted on hyperbranched liquid crystals (HLP) were synthesized to improve the compatibility between SCFs and epoxy resin (EP). The influence of SCFs-HLP on the mechanical and thermal properties of SCFs-HLP/EP composites was studied. The results show that the mechanical properties of SCFs-HLP/EP composites were enhanced distinctly. Particularly, compared with EP, impact strength, tensile strength, and flexural strength of composites with 4.0 wt % SCFs-HLP were 38.3 KJ·m−2, 86.2 MPa, and 150.7 MPa, increasing by 118.7%, 55.6%, and 89.6%, respectively. As well, the glass transition temperature of the composite material increased by 25 °C. It is hope that this work will inform ongoing efforts to exploit more efficient methods to overcome the poor natural fiber/polymer adhesion in the interface region. View Full-Text
Keywords: sisal cellulose fibers; epoxy resin; composites; liquid crystals; hyperbranched sisal cellulose fibers; epoxy resin; composites; liquid crystals; hyperbranched
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Luo, Q.; Li, Y.; Ren, L.; Xu, X.; Lu, S. Hyperbranched Liquid Crystals Modified with Sisal Cellulose Fibers for Reinforcement of Epoxy Composites. Polymers 2018, 10, 1024.

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