Phthalonitrile Resins Derived from Vanillin: Synthesis, Curing Behavior, and Thermal Properties  

作　　者：Yue Han Dong-Hao Tang Guang-Xing Wang Ya-Nan Sun Ying Guo Heng Zhou Wen-Feng Qiu Tong Zhao 

机构地区：[1]South China Advanced Institute for Soft Matter Science and Technology, South China University of Technology [2]Laboratory of Advanced Polymeric Materials, Institute of Chemistry, Chinese Academy of Sciences [3]University of Chinese Academy of Sciences [4]Sinosteel Anshan Research Institute of Thermo-Energy Co.,LTD

出　　处：《Chinese Journal of Polymer Science》2020年第1期72-83,I0007,共13页高分子科学（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Nos. 51803059 and 51873215);Guangdong Innovative and Entrepreneurial Research Team Program (No. 2016ZT06C322);National Defense Science and Technology Innovation Special Zone Project;the Young Elite Scientist Sponsorship Program by CAST (YESS);the Youth Innovation Promotion Association of CAS (No. 2017047)

摘　　要：Vanillin was used as sustainable source for phthalonitrile monomer synthesis, and allyl/propargyl ether moieties were introduced to improve the processability at the minimal cost of thermal properties. The synthesis route was optimized to minimize side-reactions and simplify post-processing, and the monomers were obtained in high purity and good yields. The curing behavior, mechanism, and processability of the monomers were studied, and the thermal properties of cured polymers were evaluated. Of the two monomers, the allyl ether-containing one exhibited a wide processing window of 185 °C, and was mainly cured into phthalocyanine and linear aliphatic structures through self-catalytic curing process. Also, the glass transition temperature was higher than 500 °C. In contrast, the propargyl ether-containing monomer could only be partially cured, and heat resistance was found to be compromised. Compared with traditional petroleum-based phthalonitrile resins, the biobased monomers could be cured without the addition of catalysts, and improvement in processability was achieved at no cost of thermal performances.Vanillin was used as sustainable source for phthalonitrile monomer synthesis, and allyl/propargyl ether moieties were introduced to improve the processability at the minimal cost of thermal properties. The synthesis route was optimized to minimize side-reactions and simplify post-processing, and the monomers were obtained in high purity and good yields. The curing behavior, mechanism, and processability of the monomers were studied, and the thermal properties of cured polymers were evaluated. Of the two monomers, the allyl ether-containing one exhibited a wide processing window of 185 °C, and was mainly cured into phthalocyanine and linear aliphatic structures through self-catalytic curing process. Also, the glass transition temperature was higher than 500 °C. In contrast, the propargyl ether-containing monomer could only be partially cured, and heat resistance was found to be compromised. Compared with traditional petroleum-based phthalonitrile resins, the biobased monomers could be cured without the addition of catalysts, and improvement in processability was achieved at no cost of thermal performances.

关 键 词：Allyl ether Curing mechanism PHTHALONITRILE Thermal properties VANILLIN 

分 类 号：TQ323[化学工程—合成树脂塑料工业]