Effects of modifications of bamboo cellulose fibers on the improved mechanical properties of cellulose reinforced poly(lactic acid) composites

    Authors

    T. J. Lu; S. M. Liu; M. Jiang; X. L. Xu; Y. Wang; Z. Y. Wang; J. Gou; D. Hui;Z. W. Zhou

    Comments

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    Abbreviated Journal Title

    Compos. Pt. B-Eng.

    Keywords

    Polymer matrix composites; Fibers; Interface/interphase; Mechanical; properties; FLAX FIBER; THERMOMECHANICAL PROPERTIES; SURFACE MODIFICATION; THERMAL-STABILITY; MALEIC-ANHYDRIDE; TENSILE; PLA; CRYSTALLINITY; POLYPROPYLENE; MORPHOLOGY; Engineering, Multidisciplinary; Materials Science, Composites

    Abstract

    Three kinds of modifications, alkali soaking or silane coupling cellulose and maleic anhydride grafting poly(L-lactic acid), were applied in the preparation of cellulose/poly(L-lactic acid) composites. The effects of treatments of the cellulosic fibers on the mechanical properties of cellulose/poly(L-lactic acid) composites were comparatively investigated. The results demonstrated that the alkali soaking provided the composites with highest strength and Young's modulus, increased by 28.6% and 34.6%, respectively, than untreated samples. The highest impact toughness and elongation were achieved by silane agent pretreatment, which were 115% and 62% higher than those of poly(L-lactic acid) reinforced with virgin bamboo cellulosic fibers. Maleic anhydride grafting had moderate effects on both the stiffness and ductility, exhibiting best over-all properties. From the scanning electron microscopy observations and Fourier transform infrared spectrum analysis, it was found that the interfacial interactions between the filler and matrix were improved after all the modifications mentioned. (C) 2014 Elsevier Ltd. All rights reserved.

    Journal Title

    Composites Part B-Engineering

    Volume

    62

    Publication Date

    1-1-2014

    Document Type

    Article

    Language

    English

    First Page

    191

    Last Page

    197

    WOS Identifier

    WOS:000336187200022

    ISSN

    1359-8368

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