Research on influence factors of surfactivity of polyester polyether block copolymer

被引：0

作者：

Wu, Ming-Hua ^{[1
]}

Lin, He-Ming ^{[1
]}

机构：

[1] Key Laboratory of Advanced Textile Material and Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou 310018, China

来源：

Journal of Donghua University (English Edition) | 2008年 / 25卷 / 01期

关键词：

Polyethylene oxides - Solutions - Ethers - Condensation reactions - Surface tension - Ethylene glycol - Polycondensation - Block copolymers - Ethylene - Critical micelle concentration - Molecular weight - Polyethylenes - Surface reactions;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Polyester polyether block copolymer (PPBC) was synthesized by ester-exchange and polycondensation reactions using dimethyl terephthalate (DMT), ethylene glycol (EG) and polyethylene glycol (PEG) as monomer. The effects of PEG molecular weight, mol ratio of DMT to PEG (nDMT/nPEG), temperature and time of polycondensation reaction and vacuum degree in the reaction system on the surface tension and critical micelle concentration (CMC) of PPBC aqueous solution were studied. It was found that both the molecular weight and the concentration of PEG can affect PPBC's surface activity obviously, and the optimum synthesis condition of PPBC used as surfactant is as follows: PEG molecular weight is 1 500, mol ratio of DMT to PEG is 3, temperature and time of polycondensation reaction is 260°C × 1 h, vacuum degree of condensation reaction is 0.03 -0.05 MPa. It was proved by surface tension measurement of PPBC aqueous solution that the PPBC synthesized in this condition is a good surfactant with excellent surfactivity.

引用

页码：19 / 23