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《Journal of Forestry Engineering》 2018-01
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Significant reinforcement of polypropylene by synergistic compatibilization of nano-cellulose whiskers and POE

JIANG Xianyou;ZHANG Yajuan;WANG Jikui;WU Genhua;School of Material Science and Engineering,East China University of Science and Technology;Collaborative Innovation Center for Petrochemical New Materials;  
Alkylation nano-cellulose whiskers( D-NCW) was obtained by alkylation reaction of the carboxylate groups on the surface of nanocellulose whiskers( NCW) to reduce the polarity of the NCW,then POE was surface grafted on the D-NCW to obtain POE-NCW dispersion by using elastomer as esterification agent. The PP/POE/POE-NCW nanocomposite was prepared by solution casting method. The morphology properties of modified NCWs were characterized.The microstructure,crystallization,thermal stability and mechanical properties of the PP/POE/POE-NCW composites were tested. The results showed that the morphology of the NCWs did not change significantly after alkylation and POE grafting while the surface polarity and its dispersion in nonpolar solvent were improved obviously. The POENCW and elastic body formed a cladding structure,and the D-NCW was independent of the elastic body and had agglomeration phenomenon. Comparing with the pure PP/POE composite and unmodified D-NCW,the crystallization properties and dynamic mechanical properties of the PP/POE/POE-NCW were improved. The highest tensile strength and heat-distortion temperature were achieved when 2% POE-NCW was added as the reinforcing fiber,where the relative improvement was 60% and 13℃,respectively.
【Fund】: 上海市产学研合作项目(沪CXY-2014-023);; 江苏省科技成果转化项目(SBA2014010034)
【CateGory Index】: TB332
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