文献类型：期刊文献

英文题名：Construction of efficient tung-oil-based thermal stabilizers bearing imide and epoxy groups for PVC

作者：Wang, Mei[1,2] Li, Shouhai[2,3] Ding, Haiyang[2,3] Xia, Jianling[2,3] Li, Mei[2,3]

第一作者：Wang, Mei

通信作者：Li, M[1];Li, M[2]

机构：[1]Jiangsu Univ, Sch Agr Equipment Engn, 301 Xuefu Rd, Zhenjiang 212013, Jiangsu, Peoples R China;[2]Key Lab Biomass Energy & Mat, Nanjing 210042, Jiangsu, Peoples R China;[3]Chinese Acad Forestry, Inst Chem Ind Forestry Prod, Nanjing 210042, Jiangsu, Peoples R China

年份：2020

卷号：44

期号：11

起止页码：4538-4546

外文期刊名：NEW JOURNAL OF CHEMISTRY

收录：;EI(收录号：20201308343153);Scopus(收录号：2-s2.0-85082031811);WOS:【SCI-EXPANDED(收录号:WOS:000521102000033)】；

基金：This work was supported by the National Natural Science Foundation of China (grant numbers 31600468 and 21905117) and a research grant of the Jiangsu Province Biomass Energy and Materials Laboratory (JSBEM201917).

语种：英文

外文关键词：Calcium compounds - Chlorine compounds - Drying oils - Stabilization - Thermodynamic stability - Zinc compounds

摘要：In the present work, tung-oil-derived imide epoxidized esters (GEABTMI) were prepared and used as poly(vinyl chloride) (PVC) co-stabilizers. Characterization results confirmed the successful preparation of the targeted material. The thermal stabilizing effects of CaSt(2)/ZnSt(2)/GEABTMI (St: stearic acid) were compared with those of CaSt(2)/ZnSt(2)/ABTMI {ABTMI: N-(3-amino-benzoic acid) tung-maleimides} and CaSt(2)/ZnSt(2). The experimental results showed that of the materials tested, CaSt(2)/ZnSt(2)/GEABTMI could provide the best long-term thermal stability for PVC. According to the thermal stability results and characterization, the simultaneous introduction of imide and epoxy groups into the GEABTMI structures was responsible for the excellent performance of the stabilized PVC. Furthermore, a mechanism for the stabilization of the PVC/CaSt(2)/ZnSt(2)/GEABTMI system was proposed. According to this proposal, the imide groups trapped the labile chlorine atoms removed from the PVC chain and reacted with the unstable macromolecular radical of PVC, disrupting in this way the radical chain degradation of PVC; and the epoxy group acted as an HCl absorber at the subsequent stages of degradation, avoiding in this way the harmful effects caused by the presence of HCl. Apart from the better stabilization performance, CaSt(2)/ZnSt(2)/GEABTMI yielded a PVC plasticization performance similar to those resulting from the use of the other stabilizers.