【摘要】 本研究以木质素和丙烯酰胺为原料,制备了具有一定机械性能及黏附性的木质素/聚丙烯酰胺复合水凝胶。结果表明,添加木质素有利于提高复合水凝胶的力学性能及黏附性能。在木质素含量1%时,复合水凝胶的拉伸应变525%,拉伸应力50 kPa,韧性11.2 MJ/m~3,压缩应变88.7%,压缩应力97 kPa,且木质素的加入使复合水凝胶的黏附性能增加,黏附能为130 N/m~2。相比于未添加木质素的水凝胶,其拉伸应变增加了1.7倍,黏附能增加了约4倍。更多还原

【Abstract】 In this study,lignin and acrylamide were used as raw materials to prepare lignin/polyacrylamide composite hydrogel with excellent mechanical and adhesive properties. The results showed that the addition of lignin was beneficial to the mechanical and adhesive properties of hydrogel. When the lignin content was 1%,the tensile strain of the composite hydrogel reached 525% and the tensile stress was 50 kPa,the toughness was 11. 2 MJ/m~3,the compressive strain was 88. 7%,the compressive stress was 97 kPa. Besides,the addition of lignin increased the adhesive performance of the composite hydrogels with the adhesion energy of 130 N/m~2. Compared with the hydrogel without lignin,the elongation of composite hydrogel was increased by 1. 7 times,and adhesion energy was increased by 4 times.更多还原