淀粉接枝共聚荧光乳液的制备及性能研究  

Preparation and Properties of Starch Graft Copolymer Fluorescent Emulsion

作　　者：张光华[1] 倪美乐 郭明媛 唐进霞 刘晶[1] 罗杰 杨冬冬 王帆[1] ZHANG Guanghua;NI Meile;GUO Mingyuan;TANG Jinxia;LIU Jing;LUO Jie;YANG Dongdong;WANG Fan(Shaanxi Key Laboratory of Chemical Additives for Industry,Shaanxi University of Science and Technology 9 Xi9an9 Shaanxi Province,710021;College of Chemistry and Materials Science,Weinan Normal University,Weinan,Shaanxi Province,714099)

机构地区：[1]陕西科技大学陕西省轻化工助剂重点实验室,陕西西安710021 [2]渭南师范学院化学与材料学院,陕西渭南714099

出　　处：《中国造纸学报》2020年第4期8-14,共7页Transactions of China Pulp and Paper

基　　金：国家自然科学基金项目(31670596);陕西省轻化工助剂重点实验室开放基金(13SJ019)。

摘　　要：以4,4-二氨基二苯乙烯-2,2-二磺酸(DSD酸)为母体、三聚氯氰为桥联剂,通过亲核取代反应将二乙醇胺、N-羟甲基丙烯酰胺引入到DSD酸中,制得三嗪氨基二苯乙烯型荧光增白单体(FBs);再以FBs、丙烯酰胺、苯乙烯为聚合单体与淀粉接枝共聚,制得淀粉接枝共聚荧光乳液(FBs-St)并用于纸张表面施胶。结果表明,共聚乳液FBs-St具有良好的紫外吸收、荧光发射以及荧光稳定性。FBs-St表面施胶纸样的抗张强度、撕裂度及抗水性均有明显提高;FBs-St表面施胶纸样的初始白度比空白纸样高11.4%ISO,且经48 h的紫外光老化后,表面施胶纸样比空白纸样的白度高13.3%ISO,返黄值低0.96,表明FBs-St乳液不仅能够提高纸张的白度,还对纸张返黄有很好的抑制作用。In this study,a new type of trizainyl aminostilbene fluorescent brighteners(FBs)based on 4,4-diaminostilbene-2,2-disulfonic acid(DSD acid)was synthesized by nucleophilic substitution reaction with cyanuric chloride as the crosslinking agent,diethanolamine and N-hydroxymethyl acrylamide as substituents.Then,using FBs,acrylamide,styrene as polymerization monomers and ammonium persulfate-sodium bisulfite as initiator to graft copolymerization with gelatinized starch to prepare starch graft copolymer fluorescent emulsion(FBs-St).The results showed that the FBs-St had good UV absorption,fluorescence emission and fluorescence stability.The tensile strength,tear strength and water resistance of FBs-St sized paper sample were improved obviously.The initial brightness of FBs-St sized paper sample was 11.4% ISO higher than that of the control sample,and after 48 h of UV irradiation,the brightness of sized paper was 13.3% ISO higher than that of the control sample,and the PC value decreased by 0.96.It showed that FBs-St emulsion could not only improve the brightness of paper,but also have a better effect on anti-ultraviolet aging than traditional fluorescent brighteners.

关 键 词：高得率浆 返黄 荧光增白剂 淀粉 接枝共聚 

分 类 号：TS727[轻工技术与工程—制浆造纸工程] TQ610.495[化学工程—精细化工]