Preparation of poly(L-lactic acid) membrane from solvent mixture via immersion precipitation

被引：8
|
作者：
Jiang, Bin [1 ,2 ]
Wang, Baoyu [1 ,2 ]
Zhang, Luhong [1 ,2 ]
Sun, Yongli [1 ,2 ]
Xiao, Xiaoming [1 ,2 ]
Yang, Na [1 ,2 ]
Dou, Haozhen [1 ,2 ]
机构：
[1] Tianjin Univ, Sch Chem Engn & Technol, Tianjin, Peoples R China
[2] Collaborat Innovat Ctr Chem Sci & Engn Tianjin, Tianjin, Peoples R China
来源：
SEPARATION SCIENCE AND TECHNOLOGY | 2016年 / 51卷 / 18期
关键词：
Flat membrane; morphology; performance; poly(L-lactic acid); solvent mixture; LIQUID PHASE-SEPARATION; MACROVOID FORMATION; PLLA MEMBRANES; PERFORMANCE; MORPHOLOGY; BLENDS; POLY(EPSILON-CAPROLACTONE); BEHAVIOR; FILMS; STEP;
D O I：
10.1080/01496395.2016.1239638
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Poly (L-lactic acid) (PLLA) membranes were fabricated through immersion precipitation method. 1, 4-dioxane (DX), N-methyl-2-pyrrolidone (NMP), N, N-dimethylformamide (DMF), N, N-dimethyl-acetamide (DMAc), and DX/NMP, DX/DMF and DX/DMAc were used as solvents severally. With a focus on the PLLA/DX/NMP/H2O system, the effect of solvent mixture on PLLA membrane was investigated by altering the ratio of DX/NMP. Various membrane morphologies were obtained, which were further correlated by mean of solubility parameter and viscosity of casting solution. It was found that the membrane cast with DX/NMP (1/1) exhibited ideal structure and better performance compared with membranes cast with same concentration of PLLA.
引用
收藏
页码：2940 / 2947
页数：8
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