摘要
以L-苯丙氨酸、长链烷基(C12/C14/C16/C18)酰氯和聚乙二醇单甲醚(MPEG,Mn=350,550,750,1000 g/mol)为原料,合成了一系列新型非离子型表面活性剂N-长链碳酰基-L-苯丙氨酸单甲基聚乙二醇酯(Rn-LMPEG),系统研究了表面张力、界面张力和土壤吸附性与其结构之间的关系。结果表明:随着MPEG分子量的增大,Rn-L-MPEG的表面张力逐渐下降;随着酰氯中烷基链的增长,Rn-L-MPEG的表面张力呈现增大趋势,系列表面活性剂中R12-L-MPEG1000具有最低的表面张力28.11 mN/m;Rn-L-MPEG的界面张力随分子结构变化的规律同表面张力;随着MPEG分子量的增大,Rn-L-MPEG的饱和吸附量逐渐增大,随着酰氯中烷基链的增长,Rn-L-MPEG的饱和吸附量呈现下降趋势。
A series of novel nonionic surfactants,N-long chain carbonyl-L-phenylalanine monomethyl polyethylene glycol ester(Rn-L-MPEG)were synthesized by using L-phenylalanine,long-chain alkyl(C12/C14/C16/C18)acyl chloride and monomethyl polyethylene glycol ether(MPEG,Mn=350,550,750,1000 g/mol)as raw materials.The relationship between surface tension,interfacial tension,soil adsorption and its structure were systematically studied.The results show that:The surface tension of Rn-L-MPEG gradually decreases with the increase of MPEG molecular weight,and increases with the extension of the alkyl chain of acyl chloride,and among the series of surfactants,R12-L-MPEG1000 has the lowest surface tension of 28.11 mN/m;The interfacial tension of Rn-L-MPEG changes with molecular structure in the same way as surface tension;The saturated adsorption capacity of Rn-L-MPEG increases with the increase of MPEG molecular weight and decreases with the extension of alkyl chain of acyl chloride.
作者
唐庚
何张涵
王勇
王伟
王永军
段明
TANG Geng;HE Zhanghan;WANG Yong;WANG Wei;WANG Yongjun;DUAN Ming(Gas Production Engineering Research Institute,PetroChina Southwest Oil and Gas Field Company,Chengdu 610017,China;College of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu 610500,China)
出处
《化工环保》
CAS
CSCD
北大核心
2020年第3期315-321,共7页
Environmental Protection of Chemical Industry
作者简介
唐庚(1970-),男,四川省资中县人,本科,高级工程师,电话13608102016,电邮tangg@petrochina.com.cn;通讯作者:段明,电话02883037346,电邮1104680134@qq.com。
