乙基纤维素-脂松香-油脂基聚合物的合成及其压敏胶应用性能  

Synthesis of Ethyl Cellulose,Gum Rosin and Fatty Acid Based Polymer and Its Application Performance as Pressure Sensitive Adhesive

作　　者：郭晓亮 祁思迈 王春鹏[1,2] 储富祥 王基夫[1,2] GUO Xiaoliang;QI Simai;WANG Chunpeng;CHU Fuxiang;WANG Jifu(Institute of Chemical Industry of Forest Products,CAF,National Engineering Lab. for Biomass Chemical Utilization,Key Lab. of Chemical Engineering of Forest Products,National Forestry and Grassland Administration,Key Lab. of Biomass Energy and Material,Jiangsu Province,Nanjing,210042,China;Jiangsu Co-Innovation Center of Efficient Processing and Utilization of Forest Resources,Nanjing Forestry University,Nanjing 210037,China)

机构地区：[1]中国林业科学研究院林产化学工业研究所,生物质化学利用国家工程实验室,国家林业局和草原局林产化学工程重点实验室,江苏省生物质能源与材料重点实验室,江苏南京210042 [2]南京林业大学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：《林产化学与工业》2022年第3期90-96,共7页Chemistry and Industry of Forest Products

基　　金：国家自然科学基金资助项目(31971600)。

摘　　要：将脂松香(GR)与甲基丙烯酸缩水甘油酯(GMA)合成脂松香基甲基丙烯酸酯(GRGMA),然后通过原子转移自由基聚合(ATRP)合成乙基纤维素-脂松香-油脂基聚合物(EC-R-LMA),并采用FT-IR、^(1)H NMR、DSC、TG/DTG、应力-应变测试对GRGMA及EC-R-LMA的结构和性能进行表征。研究结果表明:单体转化率均高于90%;随着GRGMA摩尔分数从10%增加至70%,EC-R-LMA的T^(g)从-61.3℃升高至62.58℃;当GRGMA摩尔分数从30%升高至35%,EC-R-LMA拉伸强度从0.41 MPa升高至0.50 MPa,经交联后,交联聚合物(BMI-EC-R-LMA)拉伸强度分别升高至1.04和1.27 MPa;此外,当GRGMA和LMA物质的量之比为1∶9和2∶8时,T^(g)分别为-61.3和-52.9℃,可用作压敏胶(PSA),GRGMA充当PSA的硬单体,而不是增黏树脂。GRGMA摩尔分数从10%升高至20%,压敏胶180°剥离强度从0.56 N/cm升高至1.08 N/cm,持黏性能从2 h升高至大于72 h。Gum rosin derived methacrylate(GRGMA)was firstly synthesized by the esterification reaction between gum rosin(GR)and glycidyl methacrylate(GMA).Subsequently,atom transfer radical polymerization(ATRP)was applied to fabricate ethyl cellulose-gum rosin-fatty acid derived co-polymer(EC-R-LMA).The structure and properties of GRGMA and EC-R-LMA were then characterized by FT-IR,^(1)H NMR,DSC,TG/DTG,universal tensile machine and contact angle measurement.It was found that the monomer conversion was higher than 90%.With the increase of the molar ratio of GRGMA from 10%to 70%,the T^(g) of EC-R-LMA increased from-61.3℃to 62.58℃.Particularly,when the molar ratio of GRGMA increased from 30%to 35%,the tensile strength at break increased from 0.41 MPa to 0.50 MPa,whereas the tensile strength at break of the cross-linking polymer(BMI-EC-R-LMA)increased to 1.04 and 1.27 MPa respectively after cross-linking.It was also observed that when the molar ratio of GRGMA and LMA was set to 1∶9 and 2∶8,the T^(g) of EC-R-LMAs were-61.3℃and-52.9℃,respectively,which could be used as a pressure-sensitive adhesive(PSA).Notably,GRGMA acted as a new type of hard monomer for the PSA rather than as a tackifying resin.While the molar content of GRGMA increased from 10%to 20%,the 180°peel strength of PSA increased from 0.56 N/cm to 1.08 N/cm,and the shear resistance property increased from 2 h to more than 72 h.

关 键 词：脂松香 乙基纤维素 原子转移自由基聚合 压敏胶 

分 类 号：TQ35[化学工程]