摘要
以C36二聚脂肪酸(简称二聚酸)和聚乙二醇为原料,缩聚后得到聚酯,再用氨基磺酸硫酸化,制备了新型的C36二聚脂肪酸聚乙二醇聚酯硫酸酯盐型两性高分子表面活性剂,并对其性能进行了研究。聚酯适宜的制备工艺条件是:在0.097 MPa下,n(二聚酸)∶n(聚乙二醇)=1∶1.2,催化剂w(SnC l2)=0.3%(相对于反应物总质量),反应温度200℃,反应时间6 h,酯化率达到98.11%。聚酯平均相对分子质量为613 5,相对分子质量分布系数为1.212。优化的C36二聚脂肪酸聚乙二醇聚酯硫酸酯盐的制备条件是:尿素为催化剂,n(二聚酸聚乙二醇聚酯)∶n(NH2SO3H)∶n(尿素)=1∶1.2∶1.2,反应温度130℃,反应时间2.8 h,聚酯端羟基硫酸酯酯化率达81.17%。表面性能分析结果为:产物γCMC(25℃)为3.021 mN/m,与十二烷基硫酸钠(K12)相当;CMC(25℃)为1.07 mmol/L,远低于K12;乳化性能和乳化稳定性与壬基酚聚氧乙烯醚(OP-10)相当。与K12相比,产物起泡性差但表现出很好的抑泡性能。该工作的新颖性已为河南省科学技术情报研究所2005年12月15日出具的第2005 c0006号《论文查新报告》所证实。
A new kind of amphoteric polymeric surfactant, sulfated C36 dimeric fatty acid polyethylene glycol polyester, was prepared from sulfamic acid and polyester which was synthesized using C36 dimeric fatty acid （DFA） and polyethylene glycol PEG 400 as raw materials. Esterification was conducted at 0. 097 MPa,200 ℃ for 6 h with n（DFA ）/n（ PEG 400） = 1.2,stannrus chloride was the preferable catalyst and the amount used was 0. 3% of total amount of reactants. The conversion rate can reach 98. 11% ,average molecular weight of the product is 6 135 and distribution coefficient of the molecule weight is 1. 212. Sulfation reaction of C36 dimeric,fatty acid polyethylene glycol polyester was carried out with n（polyester）：n（NH2SO3H）：n（urea） =1：1.2：1.2 at 130 ℃ for 2. 8 h. The sulfation ratio of the end hydroxyl group can reach 81.17%.
出处
《精细化工》
EI
CAS
CSCD
北大核心
2006年第4期341-345,共5页
Fine Chemicals
基金
河南省自然科学基金资助项目(0511021000)~~
