Evaluation of Kraft lignin as natural compatibilizer in wood flour/polypropylene composites

This study investigated the effect of Kraft lignin as natural compatibilizer on the water absorption, thermal, mechanical, and interfacial properties of poplar wood flour (WF)/polypropylene (PP) composites. Varying contents (0.5, 1, 2, 4, and 8 wt%) of lignin were added to WF and PP by direct mixing, then the composites were prepared by two-screw extrusion and compression moulding. Results showed that lignin incorporation reduced the water absorption and postponed the thermal decomposition of the composites. Composites with lower lignin contents (0.5% and 1%) could get the optimal properties, and the excess lignin contents (4% and 8%) resulted in slight decrease in the mechanical properties. DMA and calculation of adhesion factor showed that the composites with 0.5% lignin had the best interaction between WF and PP. The morphologies of fractured surface also indicated improved interfacial adhesion between WF and PP from the addition of 0.5% and 1% lignin. POLYM. COMPOS., 2015. © 2015 Society of Plastics Engineers

[1]  S. Mohanty,et al.  A review of the recent developments in biocomposites based on natural fibres and their application perspectives , 2015 .

[2]  Liqing Wei,et al.  Thermophysical properties and biodegradation behavior of green composites made from polyhydroxybutyrate and potato peel waste fermentation residue , 2015 .

[3]  J. Labidi,et al.  Physicochemical properties of PLA lignin blends , 2014 .

[4]  Yan Li,et al.  Study on short ramie fiber/poly(lactic acid) composites compatibilized by maleic anhydride , 2014 .

[5]  L. Avérous,et al.  Chemical modification of lignins: Towards biobased polymers , 2014 .

[6]  V. Thakur,et al.  Progress in Green Polymer Composites from Lignin for Multifunctional Applications: A Review , 2014 .

[7]  Yinwen Li,et al.  Synthesis and super retarding performance in cement production of diethanolamine modified lignin surfactant , 2014 .

[8]  M. Fan,et al.  Lignin in straw and its applications as an adhesive , 2014 .

[9]  Diego De Santis,et al.  Biocomposites Based on Lignin and Plasticized Poly(L-lactic acid) , 2013 .

[10]  Jeffrey J. Morrell,et al.  Effects of wood fiber esterification on properties, weatherability and biodurability of wood plastic composites , 2013 .

[11]  Y. Uraki,et al.  Preparation of Novel Lignin-Based Cement Dispersants from Isolated Lignins , 2013 .

[12]  B. F. Yousif,et al.  A review on the degradability of polymeric composites based on natural fibres , 2013 .

[13]  L. Sobczak,et al.  Polyolefin composites with natural fibers and wood‐modification of the fiber/filler–matrix interaction , 2013 .

[14]  L. Famá,et al.  Tensile and fracture behaviour of PP/wood flour composites , 2012 .

[15]  T. Rials,et al.  Effects of hemicellulose extraction on properties of wood flour and wood–plastic composites , 2012 .

[16]  D. Rodrigue,et al.  Mechanical and rheological behavior of highly filled polystyrene with lignin , 2012 .

[17]  J. Agnelli,et al.  Lignin as additive in polypropylene/coir composites: Thermal, mechanical and morphological properties , 2012 .

[18]  Zhang Hairong,et al.  Investigation of liquefied wood residues based on cellulose, hemicellulose, and lignin , 2012 .

[19]  Benjamin M. Wood,et al.  Use of lignin as a compatibiliser in hemp/epoxy composites , 2011 .

[20]  M. Misra,et al.  Enhanced properties of lignin-based biodegradable polymer composites using injection moulding process , 2011 .

[21]  C. Hill,et al.  Silane coupling agents used for natural fiber/polymer composites: A review , 2010 .

[22]  M. Reboredo,et al.  Lignin in jute fabric–polypropylene composites , 2009 .

[23]  H. Azizi,et al.  Investigation of the dynamic mechanical behavior of polypropylene/(wood flour)/(kenaf fiber) hybrid composites , 2009 .

[24]  N. Graupner.  Application of lignin as natural adhesion promoter in cotton fibre-reinforced poly(lactic acid) (PLA) composites , 2008, Journal of Materials Science.

[25]  C. Dubois,et al.  Polymerization compounding of HDPE/Kevlar composites. I. Morphology and mechanical properties , 2006 .

[26]  B. Kos̆iková,et al.  Stabilization effect of lignin in natural rubber , 2006 .

[27]  B. Kos̆iková,et al.  Stabilization effect of lignin in polypropylene and recycled polypropylene , 2005 .

[28]  E. Jong,et al.  Co-ordination network for lignin—standardisation, production and applications adapted to market requirements (EUROLIGNIN) , 2004 .

[29]  A. Ragauskas,et al.  Review of current and future softwood kraft lignin process chemistry , 2004 .

[30]  R. Young,et al.  Lignin‐polypropylene composites. Part 1: Composites from unmodified lignin and polypropylene , 2002 .

[31]  P. Wambua,et al.  Natural fibres: can they replace glass in fibre reinforced plastics? , 2001 .

[32]  Z. Ishak,et al.  The effect of lignin as a compatibilizer on the physical properties of coconut fiber–polypropylene composites , 2000 .

[33]  Tb Rajashekar,et al.  What’s new in computers? , 1997 .