文献类型：期刊文献

中文题名：木质素星型共聚物的结构特性及其在大豆胶黏剂中的应用

英文题名：Characteristics of Lignin-based Star Copolymer and Its Application in Soybean Adhesives

作者：马林[1] 刘婧伊[1] 高士帅[1] 王广彬[1] 张代晖[1] 许玉芝[1]

第一作者：马林

机构：[1]中国林业科学研究院林产化学工业研究所,江苏省生物质能源与材料重点实验室,国家林业和草原局林产化学工程重点实验室,林木生物质低碳高效利用国家工程研究中心,江苏省林业资源高效加工利用协同创新中心,江苏南京210042

年份：2025

卷号：45

期号：6

起止页码：89-97

中文期刊名：林产化学与工业

外文期刊名：Chemistry and Industry of Forest Products

收录：;北大核心:【北大核心2023】；

基金：国家自然科学基金资助项目(32201508)。

语种：中文

中文关键词：木质素共聚物;两亲性;豆粕胶黏剂;表观黏度;高固体含量

外文关键词：lignin copolymer;amphipathy;soybean meal adhesive;apparent viscosity;high solid content

分类号：TQ35;TQ432.73

摘要：以玉米秸秆木质素为原料,先生成可逆加成裂解链转移聚合(RAFT)的木质素基链转移剂(lignin-CTA),再与偶氮二异丁腈(AIBN)、丙烯酰胺(AM)制成木质素星型共聚物(lignin-g-PAM),然后将其分别加入到分离大豆蛋白(SPI)-水体系和水性聚酰胺-豆粕粉(SMF)-水体系,分别制成大豆蛋白基胶黏剂和豆粕基胶黏剂,并利用多种方法对lignin-g-PAM及其胶黏剂进行表征。研究结果表明:lignin-g-PAM成功合成,接枝木质素的聚丙烯酰胺分子链段越长,所得lignin-g-PAM的热性质和表面活性越优。共聚物lignin-g-PAM对大豆蛋白基胶黏剂具有显著的降黏作用,能降低其固化温度,提高其热稳定性,破坏了大豆蛋白中酰胺Ⅱ、Ⅲ的官能团结构。与未添加lignin-g-PAM的豆粕基胶黏剂相比,添加lignin-g-PAM可使固体质量分数为44.2%的豆粕基胶黏剂的表观黏度由10000 mPa·s降至5500 mPa·s,所得的胶层的韧性得到改善,制得胶合板的湿态胶合强度满足国家Ⅱ类胶合板标准要求。
Corn stover lignin was used as the raw material to synthesize a lignin-based chain transfer agent(lignin-CTA)by reversible addition-fragmentation chain transfer polymerization(RAFT),then,it was performed the polymerization of acrylamide(AM)in the presence of the initiator azobisisobutyronitrile(AIBN)to prepare a lignin star copolymer(lignin-g-PAM).Subsequently,this copolymer was individually added to the soy protein isolate(SPI)-water system and the waterborne polyamidesoybean meal flour(SMF)-water system,to fabricate soy protein-based adhesives and soybean meal-based adhesives.Various methods were employed to characterize lignin-g-PAM and the resultant adhesives.The results showed that lignin-g-PAM was successfully synthesized.The longer polyacrylamide molecular chain grafted onto lignin,the better thermal properties and surface activity of the obtained lignin-g-PAM.The copolymer lignin-g-PAM exerted a significant viscosity-reducing effect on the soy protein-based adhesive,lowered its curing temperature,and improved its thermal stability.It also destroyed the functional group structures of amideⅡandⅢin soy protein.Compared with the soybean meal-based adhesive without lignin-g-PAM,the addition of lignin-g-PAM reduced the apparent viscosity of the soybean meal-based adhesive with a solid mass fraction of 44.2%from 10000 mPa·s to 5500 mPa·s,and improved the toughness of the resulting adhesive layer.The wet bonding strength of the prepared plywood meets the requirements of the national standard for typeⅡplywood.