The effect of cellulose nanowhiskers on the flexural properties of self-reinforced polylactic acid composites

被引：21
|
作者：
Hossain, Kazi M. Zakir [1 ]
Felfel, Reda M. [1 ,2 ]
Rudd, Chris D. [1 ]
Thielemans, Wim [3 ,4 ]
Ahmed, Ifty [1 ]
机构：
[1] Univ Nottingham, Fac Engn, Div Mat Mech & Struct, Nottingham NG7 2RD, England
[2] Mansoura Univ, Fac Sci, Dept Phys, Mansoura 35516, Egypt
[3] Univ Nottingham, Sch Chem, Nottingham NG7 2RD, England
[4] Univ Nottingham, Fac Engn, Proc & Environm Res Div, Nottingham NG7 2RD, England
来源：
REACTIVE & FUNCTIONAL POLYMERS | 2014年 / 85卷
基金：
英国工程与自然科学研究理事会;
关键词：
PLA fibre; Self-reinforced composite; Cellulose nanowhiskers; Flexural properties; HOT COMPACTION; MECHANICAL-PROPERTIES; STRENGTH RETENTION; FIBERS; PLA; BIODEGRADABILITY; TEMPERATURE; DERIVATIVES; BEHAVIOR; TISSUE;
D O I：
10.1016/j.reactfunctpolym.2014.09.012
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
Self-reinforced polylactic acid (SR PLA) composites incorporating cellulose nanowhiskers (CNWs) were produced by coating orientated PLA fibres with a polyvinyl acetate (PVAc)-CNW mixture as a binder prior to hot compaction at 95 degrees C. PLA fibres were produced with an average diameter of 11 (+/- 0.9) mu m via a melt-drawing process at 180 degrees C. Scanning electron microscopy (SEM) images revealed that the CNWs imparted roughness to the PLA fibre surface. Cross-sectional examination of the SR PLA composites after hot-pressing confirmed that the PLA fibres had maintained their morphology. Incorporation of 8 wt% CNWs within the SR-PLA composites revealed an increase in their flexural strength (48%) and modulus (39%) compared to the control composite (flexural strength similar to 82 MPa and modulus similar to 3.9 GPa). In addition, whilst the control SR-PLA composite revealed quite brittle characteristics, the addition of CNWs and PVAc gave the self-reinforced composite a more ductile behaviour. (C) 2014 Elsevier B.V. All rights reserved.
引用
收藏
页码：193 / 200
页数：8
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