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synergistic Modification of PVC with Nitrogen-Containing Heterocycle and Tung-Oil Based Derivative for Enhanced Heat stabilization and Plasticization Behavior

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Journal of Renewable Materials 2023年第4期11卷 2015-2031页

作者： Mei Wang Xinzhu Fan Quan Bu Puyou Jia Shouqi Yuan School of Agricultural Engineering Jiangsu UniversityZhenjiang212013China Institute of Chemical Industry of Forest Products Chinese Academy of Forestry(CAF)Nanjing210042China Key Laboratory of Chemistry and Engineering of Forest Products State Ethnic Affairs CommissionGuangxi Key Laboratory of Chemistry and Engineering of Forest ProductsGuangxi University for NationalitiesNanning530006China Research Center of Fluid Machinery Engineering and Technology Jiangsu UniversityZhenjiang212013China

The additives present in polyvinyl chloride(PVC)materials are the major source of organic by-products during PVC *** thermal stabilizer and plasticizer are the main additives that endow PVC with the required properties during its ***,these two additives easily migrate when samples are obtained by physical mixing of the additives with *** causes the reduction of PVC sample efficacy and the increase in the formation of organic by-products in the radiolysis *** this work,two kinds of grafted PVC samples(tungoil derivative grafted PVC and Atz grafted PVC,abbreviated as P-GT4 and P-AZ3)were synthesized by chemical grafting of 3-amino-1,2,4-triazole(Atz)and tung-oil derivative on PVC,*** two PVC samples were then blended at different mass ratios to obtain hybrid PVC materials with excellent plasticization,thermal stability and migration resistance *** scanning calorimetry(DSC),discoloration,Congo red test and thermogravimetric analysis(TGA)showed that when the mass ratio of P-GT4 to P-AZ3 in the mixed PVC resin was 1:3,the resulting P1:3-GT4-AZ3(P4)presented the best plasticization and thermal *** kinetics of thermal decomposition showed that the activation energy of P4 was much higher than that of the reference material[PVC/DOTP/CaSt2/ZnSt2,PVC/CZ41 for short]at mass lossα=20%and 80%.In addition,the leaching test showed that P4 material possessed excellent migration resistance ability.

关键词： Polyvinyl chloride synergistic self-stabilization internal plasticization 3-amino-1,2,4-triazole tung-oil derivative

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