壳聚糖季铵盐交联酰胺共聚物的制备及应用  

Synthesis and application of chitosan quaternary ammonium salt crosslinked amide copolymer

作　　者：张琦 景宜 包康 王雯璐 ZHANG Qi;JING Yi;BAO Kang;WANG Wenlu(Department of Light Industry and Food,Nanjing Forestry University,Nanjing 210037,Jiangsu,China;Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,Jiangsu,China)

机构地区：[1]南京林业大学轻工与食品学院,江苏南京210037 [2]江苏省林业资源高效加工利用协同创新中心,江苏南京210037

出　　处：《精细化工》2022年第11期2355-2363,共9页Fine Chemicals

基　　金：国家自然科学基金项目(31370583);江苏省研究生科研与实践创新计划项目(KYCX22_1072)。

摘　　要：以羟丙基三甲基氯化铵壳聚糖(CC)为阳离子单体,二乙烯三胺(DETA)和己二酸(AA)为原料,甲基丙烯酸缩水甘油酯(GMA)为交联剂,通过水溶液共聚法制备了壳聚糖季铵盐交联酰胺共聚物(CC-GPPC)。通过FTIR、SEM、TG、GPC对其结构与性能进行表征;探讨了CC、GMA及DETA用量对CC-GPPC性能及其浆内添加后纸张物性的影响。结果表明,在CC添加量为1.0g、n(AA)∶n(DETA)∶n(GMA)=1∶1.1∶0.9,AA用量为0.1 mol时,可制得性能较为优越的CC-GPPC,此时聚合物重均相对分子质量为74520,平均粒径为795nm,分散指数为0.581,常温(25℃)下可稳定贮存56d;当CC-GPPC的浆内添加量为绝干纤维质量的0.6%时,纸张干抗张指数为52.99 N?m/g,湿抗张指数为16.82 N?m/g,与原纸相比,纸张干、湿抗张指数分别提高了29.75%、80.67%,纸张增湿强效果明显提高。与商用纸张增湿强剂聚酰胺多胺环氧氯丙烷(PAE)树脂相比,CC-GPPC达到了无氯且性能优越,纸张湿抗张指数提高了10.58%,是一种绿色环保型纸张增湿强剂。Chitosan quaternary ammonium salt crosslinked amide copolymer(CC-GPPC)was prepared by aqueous copolymerization of adipic acid(AA),diethylenetriamine(DETA),crosslinking monomer glycidyl methacrylate(GMA)and cationic monomer hydroxypropyl trimethylammonium chloride chitosan(CC).The CC-GPPC were then characterized by FTIR,SEM,TG and GPC,followed by investigation on the effects of dosages of CC and GMA and DETA on the CC-GPPC properties and the physical properties of paper produced from pulp added with CC-GPPC.The results showed that the CC-GPPC,prepared at conditions of CC 1.0 g,AA dosage 0.1 mol,and n(AA)∶n(DETA)∶n(GMA)=1∶1.1∶0.9,displayed superior performance with a weight average relative molecular mass of 74520,average particle size of 795nm,and the dispersion index of 0.581.Moreover,CC-GPPC synthesized at above conditions could be stored stably for 56 d at normal temperature(25℃).When 0.6%(based on the total dry paper pulp)CC-GPPC was added into the paper pulp,the dry and wet tensile indexes of paper generated were 52.99N·m/g and 16.82 N·m/g,corresponding to an increase of 29.75%and 80.67%respectively in comparison to those of paper obtained with no CC-GPPC addition,indicating significant improvement in paper wet-strength performance.Compared with commercial polyamide polyamine epichlorohydrine(PAE),CC-GPPC,chlorine-free and exhibited superior performance with paper wet tensile index increased by 10.58%,was a green and environmental friendly paper humidifier.

关 键 词：壳聚糖季铵盐 甲基丙烯酸缩水甘油酯 增湿强剂 环保 造纸化学品 

分 类 号：TS727.2[轻工技术与工程—制浆造纸工程]