高等学校化学学报 ›› 2017, Vol. 38 ›› Issue (5): 806-813.doi: 10.7503/cjcu20160911

• 物理化学 • 上一篇    下一篇

吡嗪二羧酸-三聚氰胺双组分水凝胶的制备及性能

王路远, 刘树雪, 李慧敏, 黄耀东()   

  1. 天津大学化工学院, 系统生物工程教育部重点实验室, 天津 300350
  • 收稿日期:2016-12-19 出版日期:2017-05-10 发布日期:2017-04-20
  • 作者简介:联系人简介: 黄耀东, 男, 博士, 副教授, 主要从事有机功能化合物合成与性质方面的研究. E-mail:huangyaodong@tju.edu.cn
  • 基金资助:
    天津市自然科学基金(批准号: 15JCYBJC20100)资助

Preparation and Properties of the Two-component Hydrogels Based on Pyrazine Dicarboxylic Acid and Melamine

WANG Luyuan, LIU Shuxue, LI Huimin, HUANG Yaodong*()   

  1. Key Laboratory of Systems Bioengineering(Ministry of Education), School of Chemical Engineering and Technology, Tianjin University, Tianjin 300350, China
  • Received:2016-12-19 Online:2017-05-10 Published:2017-04-20
  • Contact: HUANG Yaodong E-mail:huangyaodong@tju.edu.cn
  • Supported by:
    † Supported by the Natural Science Foundation of Tianjin, China(No.15JCYBJC20100)

摘要:

以3,6-二甲基-2,5-吡嗪二羧酸(P)和三聚氰胺(M)为组分, 采用不同的摩尔比(1∶1, 1∶2, 1∶3)混合配制了3个样品PM11, PM12和PM13, 并对其凝胶性能进行了测试. 实验结果表明, PM能在水中及部分含水有机溶剂中形成稳定的凝胶, 这些凝胶对酸碱具有良好的响应性能. 采用扫描电子显微镜分析了3种水凝胶的微观形貌, 均为纤维状的网络结构; 红外光谱及紫外光谱测试结果表明氢键是形成凝胶的关键驱动力; XRD测试结果显示凝胶为层状结构. 对PM12在不同pH值的水中的凝胶性能测试结果表明, 在pH=3~11的范围内PM12均能形成凝胶. 测试了PM12在混合溶剂中的凝胶性能, 并将测试结果与混合溶剂的Hansen溶解度参数关联, 以便用于分析溶剂与凝胶因子间的相互作用, 所得结果亦表明氢键在凝胶形成的过程中起重要作用.

关键词: 吡嗪二羧酸, 三聚氰胺, 双组分水凝胶, pH响应, Hansen溶解度参数

Abstract:

3,6-Dimethyl-pyrazine-2,5-dicarboxylic acid(P) and melamine(M) were mixed at different ratios to yield three mixtures, PM11, PM12 and PM13(numbers indicating respective molar ratios of components). The gelation properties of the three PM samples were tested and all formed stable gels both in water and some aqueous organic solvents. The formed gels had good responding property to the stimuli of acid and base. SEM measurement was conducted to check the morphologies of hydrogels and the images presented fibrous networks. FTIR and UV-Vis spectra suggested that hydrogen bonding was the key driving force for the gel formation. The results of XRD indicated that the hydrogels were lamellar structure. The gelling behavior of PM12 in different water with various pH values were studied and the results showed that PM12 formed stable hydrogel in the pH range of 3—11. Furthermore, the gelation ability of PM12 in aqueous organic solvents were checked and the results were correlated with the Hansen solubility parameters of the mixed solvents in order to reveal the interactions between gelator and solvent. Expectedly, hydrogen bonding was found to play an important role in the gel formation.

Key words: 3,6-Dimethyl-pyrazine-2, 5-dicarboxylic acid, Melamine, Bicomponent hydrogel, pH-Sensitive, Hansen solubility parameter