糠醛交联黑茶茶色素树脂的制备及其吸水性能研究  

Study on preparation and water absorption properties of furfural cross-linked dark tea pigment resin

作　　者：李媛[1] 肖锦涛 彭子兴 陈群雁 蹇丹 刘湛军 LI Yuan;XIAO Jintao;PENG Zixing;CHEN Qunyan;JIAN Dan;LIU Zhanjun(Key Laboratory of Low-carbon and Environmental Functional Materials in Ordinary Universities of Hunan Province,Hunan City University,Yiyang,Hunan 413000,China)

机构地区：[1]湖南城市学院低碳与环境功能材料湖南省普通高校重点实验室,湖南益阳413000

出　　处：《湖南城市学院学报（自然科学版）》2024年第5期73-78,共6页Journal of Hunan City University:Natural Science

基　　金：湖南省大学生创新创业训练计划项目(S202311527071,S202311527075);湖南省自然科学基金项目(2023JJ50338);湖南省教育厅科研项目(22B0785);益阳市科技创新计划项目(益财教指[2023]102号)。

摘　　要：高吸水树脂在农业、医疗等方面有着广泛的应用。本文以丙烯酸和茶色素为原料,过硫酸钾(KPS)为引发剂,糠醛为交联剂,水溶液聚合法合成高吸水树脂,并通过单因素实验和正交实验确定树脂的最佳制备条件,以此来研究温度、p H值、吸水时间等外界因素对树脂吸水性能的影响。实验结果表明:当丙烯酸质量为2 g,中和度为90%,茶色素用量为0.0030 g,引发剂用量0.0050 g,糠醛用量0.0008 m L时,制备的糠醛交联黑茶茶色素树脂吸水倍率最高,可达到1187.9 g·g^(-1),且其在中性环境中吸水16 h能达到最高吸水倍率。Super absorbent resin is widely used in agriculture,medical treatment and other fields.In this paper,super absorbent resin was synthesized by aqueous solution polymerization with acrylic acid and tea pigment as raw materials,potassium persulfate(KPS)as initiator and furfural as crosslinking agent.The optimum preparation conditions of the resin were determined by single factor experiment and orthogonal experiment.The effects of external factors such as temperature,pH value and water absorption time on the water absorption properties of the resin were studied.The results showed that when the mass of acrylic acid was 2 g,the neutralization degree was 90%,the amount of tea pigment was 0.0030 g,the amount of initiator was 0.0050 g,and the amount of furfural was 0.0008 mL,the furfural cross-linked dark tea pigment resin had the highest water absorption rate,which could reach 1187.9·g·g^(−1),and it could reach the highest water absorption rate in a neutral environment for 16 h.

关 键 词：茶色素 丙烯酸 高吸水树脂 吸水倍率 

分 类 号：Q89[生物学]