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Chemistry and Industry of Forest Products ›› 2017, Vol. 37 ›› Issue (3): 115-121.doi: 10.3969/j.issn.0253-2417.2017.03.016

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Preparation and Characterization of Undecylenic Acid/Methyl Methacrylate Copolymer Emulsion

WU Meiting1, YANG Linqiang1, 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:2016-10-09 Online:2017-06-25 Published:2017-07-03

Abstract: Undecylenic acid/methyl methacrylate(UA/MMA) copolymer emulsion was prepared by miniemulsion polymerization. The effects of UA with allyl structure and initiator dosage on the polymerization process and polymer properties were studied. The results indicated that UA was involved in the copolymerization reaction with MMA. And with the increase of the amount of UA, the polymerization rate, molecular weight, and the glass transition temperature declined. But the thermal stability of the copolymer improved. As the amount of initiator increased, the molecular weight of polymer decreased and the conversion rate increased. Particle diameter test showed that the volume average particle diameter of enulsions was about 120 nm and increased slightly with the addition of UA. Viscosity test showed that the viscosity of copolymer emulsions was 10-15 mPa·s.

Key words: undecylenic acid, methyl methacrylate, miniemulsion, polymerization rate, relative molecular weight

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