Thermal behavior of epoxidized cardanol diethyl phosphate as novel renewable plasticizer for poly(vinyl chloride)

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• 作者：Jie Chen^a ; ¹ ; Zengshe Liu^b ; Xiaoying Li^a ; Peng Liu^a ; Jianchun Jiang^a ; ^{bio-enegry@163.com" class="auth_mail" title="E-mail the corresponding author} ; Xiaoan Nie^a ; ^{niexiaoan@126.com" class="auth_mail" title="E-mail the corresponding author}
• 关键词：Poly(vinyl chloride) (PVC) ; Natural plasticizer ; Cardanol ; Thermal stability
• 刊名：Polymer Degradation and Stability
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：126
• 期：Complete
• 页码：58-64
• 全文大小：1406 K

文摘

A novel plasticizer, epoxidized cardanol diethyl phosphate (ECEP), based on cardanol was synthesized. Chemical structure of ECEP was characterized by fourier transform infrared (FTIR), ¹H -nuclear magnetic resonance(¹H NMR) and ¹³C -nuclear magnetic resonance(¹³C NMR). Effects of ECEP substitution for the petroleum-based plasticizer dioctyl phthalate (DOP) in soft poly(vinyl chloride) (PVC) films were studied. Thermal stability and mechanical properties before and after aging of PVC films plasticized with different content of ECEP were investigated with thermogravimetric analysis (TGA), dynamic mechanical analysis (DMA) and tensile tests. The results indicated that PVC films plasticized with ECEP showed increased thermal stability. When DOP was substituted for ECEP completely, glass transition temperature (T_g) of PVC films decreased from 41.07 °C to 33.20 °C, the 10% and 50% weight loss temperatures (T₁₀ and T₅₀) increased by 31.57 °C and 23.09 °C respectively. The mechanical properties of PVC films before and after aging were also investigated.