Hydroxylbenzylthioethers as novel organic thermal stabilizers for rigid PVC |
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Authors: | Peng Liu Lunyu Zhu Yan Fang Dehong Chen Kai Xu |
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Affiliation: | a Key Laboratory of Organic Polymer Material for Electronics, Guangzhou Institute of Chemistry, Chinese Academy of Sciences (CAS), Guangzhou 510650, PR China b Graduate School of Chinese Academy of Sciences (CAS), Beijing 100039, PR China |
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Abstract: | An investigation was carried out on the performances of hydroxylbenzylthioethers employed as organic thermal stabilizers for rigid poly(vinyl chloride). The efficiency of these compounds as thermal stabilizers was evaluated by using Haake polydrive mixer and TGA. The stabilizing efficiency was compared with Ca-Zn soap and methyltin stabilizer. Hydroxylbenzylthioethers exhibit greater efficiency than both of these stabilizers. This is attributed to the ability of these compounds to prevent the formation of polyene sequences. The hydroxylbenzylthioethers-stabilized PVC showed a slightly lower glass transition temperature (Tg) in comparison with the original PVC. Hydroxylbenzylthioethers and epoxidized soybean oil (ESBO) exhibit synergistic effect on the stabilizing effect, when the mass ratios of ESBO to hydroxylbenzylthioethers are less than 0.5. |
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Keywords: | Poly(vinyl chloride) Organic thermal stabilizer Hydroxylbenzylthioethers Degradation |
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