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Chemistry and Industry of Forest Products ›› 2015, Vol. 35 ›› Issue (4): 105-111.doi: 10.3969/j.issn.0253-2417.2015.04.017

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Thermal Property and Migration of Polyvinyl Chloride Plasticized with Polyester Based on Soybean Oil

JIA Pu-you1, BO Cai-ying1, ZHANG Meng1, HU Li-hong1, ZHOU Yong-hong1   

  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.Biomass Energy and Material, Jiangsu Province, Nanjing 210042, China;
    2. Research Institute of Forestry New Technology, CAF, Beijing 100091, China
  • Received:2014-05-19 Online:2015-08-25 Published:2015-08-29

Abstract: The soybean oil based polyester was synthesized by the polycondensation of o-phthalic anhydride and the soybean oil monoglyceride obtained from the transesterification of soybean oil and glycerol at 230-240 ℃. The soybean oil polyester was characterized by gel permeation chromatography (GPC) and FT-IR. And the synthesized soybean oil polyester was then blend with polyvinyl chloride(PVC)to form a plasticized PVC. Thermodynamic properties, plasticizer migration stability and mechanical properties of soybean oil polyester plasticized PVC were investigated. The results showed that relative molecular mass of the polyester was 3 541. The thermal degradation temperature of the plasticized PVC was 256.1 ℃. And tensile strength and elongation at break for this plasticized PVC could reach 6.5 MPa and 230.3%, respectively. In addition, the combination of soybean oil polyester and dioctyl phthalate(DOP) using as complex plasticizer to plasticize PVC was also evaluated. The migration ratio of these complex plasticizers in distilled water, acetic acid solution, ethanol solution, petroleum ether and olive oil reduced to 0.18%,0.22%,0.28%,0.83% and 0.34%, which was indicative of their excellent migration property. Herein, the thermal and mechanical properties of the soybean oil polyester plasticized PVC could maintain for long time and the potential harm to human caused by plasticizer could be reduced at same time.

Key words: soybean oil, polyester, polyvinyl chloride, polyvinyl chloride, blends

CLC Number: