摘要
为了以高效快捷的方式研制出天然无毒害的水凝胶,文中以魔芋葡甘聚糖(KGM)和黄蓍胶(GT)为研究对象,制得KGM/GT水凝胶。使用旋转流变仪、质构仪分析不同比例KGM/GT水凝胶的流体行为和质构性能,通过红外光谱对KGM/GT水凝胶进行表征。研究结果显示,KGM/GT水凝胶是由氢键等分子间弱相互作用力缔结而成的热可逆水凝胶,当温度超过40℃时会溶解为溶胶。在一定比例范围内,GT占比越大,KGM/GT水凝胶结构缠结越紧密,凝胶特性越强。当KGM/GT质量比为3∶7时,水凝胶间链的连接最为紧密,硬度达到最大;当KGM/GT水凝胶质量比为5∶5时,胶粘性、咀嚼性、回复性达到最大;当KGM/GT质量比为9∶1时,水凝胶间链的连接最为疏松。
In order to develop a non-toxic hydrogel in an high-efficiency way, the KGM/GT hydrogel was prepared using konjac glucomannan （KGM） and gum tragacanth （GT）. Rheological properties, texture properties and intermolecular interaction of KGM/GT hydrogels were analyzed by rotating rheometer, texture analyzer and Fourier transform infrared spectroscopy. The results show that the KGM/GT hydrogel is thermoreversible hydrogel which dissolves into sol when the temperature exceeds 40 ℃ The larger the proportion of GT is, the more the entanglement of KGM/GT hydrogel network is, and the stronger the gel property is. When the mass ratio of KGM/ GT is 3：7, the hydrogels are connected tightly and the hardness reaches the maximum. When the mass ratio of KGM/GT hydrogel is 5：5, the adhesiveness, chewiness and recovery are the highest. When the mass ratio of KGM/ GT is 9 ： 1, the hydrogel chains are loosely connected.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2017年第12期78-84,共7页
Polymer Materials Science & Engineering
基金
国家自然科学基金资助项目(31271837
31471704)
福建省农业高校产学合作项目重大项目(2013N5003)
