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首页> 外文期刊>Journal of Applied Polymer Science >Preparation and permeability of a block copolymer dialysis membrane by poly(gamma-methyl-L-glutamate) and poly(ethylene glycol)
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Preparation and permeability of a block copolymer dialysis membrane by poly(gamma-methyl-L-glutamate) and poly(ethylene glycol)

机译：聚（γ-甲基-L-谷氨酸）和聚（乙二醇）制备嵌段共聚物渗析膜及其渗透性

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摘要

The block copolymer (PMLG-b-PEG) of poly(gamma-methyl-L-glutamate) (PMLG) and isocyanate-terminated poly( ethylene glycol) was synthesized. Membranes were prepared by casting 2% 1,2-dichloroethane solutions of the polymer onto a glass plate and by evaporating the solvent at room temperature. The structure and microdomain morphologies of the membranes were observed with IR spectroscopy and scanning electron microscopy, respectively. Measurement of the contact angles of deionized water on polymer membrane surfaces was made. The mechanical properties of the membranes were also determined. The permeability of the PMLG-b-PEG and PMLG membranes toward urea and creatinine was studied in a dialyzer. In all cases, the block membranes showed improved permeability toward those solutes in comparison with the PMLG membranes. The permeation coefficients of urea, through the PMLG-b-PEG300 and PMLG-b-PEG1000 membranes, were about 2.3 and 3.2 times larger than that of PMLG membranes, and for creatinine through PMLG-b-PEG300 and PMLG-b-PEG1000 membranes, were about 1.0 and 2.0 times larger than that of PMLG membranes. (C) 1998 John Wiley & Sons, Inc. [References: 10]
机译：合成了聚（γ-甲基-L-谷氨酸）（PMLG）和异氰酸酯封端的聚（乙二醇）的嵌段共聚物（PMLG-b-PEG）。通过将聚合物的2％1，2-二氯乙烷溶液浇铸到玻璃板上并在室温下蒸发溶剂来制备膜。分别用红外光谱和扫描电子显微镜观察膜的结构和微区形态。测量去离子水在聚合物膜表面上的接触角。还确定了膜的机械性能。在透析器中研究了PMLG-b-PEG和PMLG膜对尿素和肌酐的渗透性。在所有情况下，与PMLG膜相比，嵌段膜对这些溶质的渗透性均得到改善。尿素透过PMLG-b-PEG300和PMLG-b-PEG1000膜的渗透系数分别约为PMLG膜的2.3和3.2倍，肌酐透过PMLG-b-PEG300和PMLG-b-PEG1000膜的渗透系数分别是，分别是PMLG膜的1.0和2.0倍。 （C）1998 John Wiley＆Sons，Inc. [参考：10]

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