A novel approach to 1,2,3-triazole grafted chitosans via modified Wolff's cyclocondensation

作者：Zhang, Zixu; Wang, Zikun^*; Mu, Hongliang; Wang, Xin; Li, Yunhui; Yan, Jingling^*; Wang, Zhen

来源：European Polymer Journal, 2018, 98: 492-498.

DOI：10.1016/j.eurpolymj.2017.11.047

• 1,2,3-Triazole
• Chitosan
• Wolff's cyclocondensation
• alpha-Diazo-beta-oxoamides
• Degree of conversion

A novel synthetic strategy to afford 1,2,3-triazole grafted chitosans via modified Wolffs cyclocondensation was established. Subsequently, several multi-substituted 1,2,3-triazole grafted chitosans with a degree of conversion (DC) varying from 42.1% to 53.9% were synthesized and characterized. The chemical structures of the modified chitosans were confirmed by Fourier transform infrared spectroscopy (STIR) and proton nuclear magnetic resonance spectroscopy (H-1 NMR), and the DC of chitosan derivatives were determined by amino titration. Meanwhile, the impact of 1,2,3-triazole moieties in the chitosan on their thermal properties were characterized by thermogravimetic analysis (TGA) and differential calorimetry scanner (DSC) respectively.

• 出版日期2018-1
• 单位中国科学院; 高分子物理与化学国家重点实验室; 中国科学院长春应用化学研究所; 长春理工大学