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Chemistry and Industry of Forest Products ›› 2017, Vol. 37 ›› Issue (3): 53-60.doi: 10.3969/j.issn.0253-2417.2017.03.007

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Preparation and Characterization of Poly (Lactic Acid)/Wood Flour Modified with Cyanuric Chloride/Oleyl Amine Composites

YANG Linqiang1, WU Meiting1, JIN Liwei1,2   

  1. 1. Institute of Chemical Industry of Forest Products, CAF;National Engineering Lab. for Biomass Chemical Utilization;Key and Open Lab. of Forest Chemical Engineering, SFA;Key Lab. of Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2016-11-09 Online:2017-06-25 Published:2017-07-03

Abstract: Raw wood flour (RWF) was modified with cyanuric chloride (TCT), and the modified wood flour (TWF) and oleyl amine (OAM) were used to prepare composites with poly(lactic acid) by reactive extrusion. FT-IR spectra indicated that the structure of TCT was attached to wood flour and OAM was grafted onto TWF in the progress of reactive extrusion. Elemental analysis and titration analysis showed that the molar ratio of nitrogen and chlorine of TWF was 2.91:1 and two of three active chlorine of TCT were involved in the reaction. The addition of OAM led to the degradation of PLA. However, the degradation of PLA/TWF/OAM composites was weaker than that of PLA/RWF/OAM composites. PLA/TWF/OAM composites exhitbited better tensile strength and flexural strength than that of PLA/RWF/OAM composites under the same dosage of OAM. PLA/TWF/OAM composites had a greater melt flow rate than that of PLA/TWF composites under the same dosage of wood flour. DMA revealed that PLA/TWF/OAM composites had a higher glass transition temperature than that of PLA/RWF/OAM composites under the same dosage of OAM.

Key words: cyanuric chloride, wood flour, oleyl amine, poly(lactic acid), melt flow property

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