SA/CS-CaCl2/PMCG新型生物微胶囊的扩散与截留性能

化工学报 ›› 2004, Vol. 55 ›› Issue (1): 74-80.

• 生物化学工程、制药、食品和天然产物加工 • 上一篇下一篇

SA/CS-CaCl₂/PMCG新型生物微胶囊的扩散与截留性能

张立央;姚善泾;关怡新

浙江大学化学工程与生物工程学系, 浙江杭州 310027

出版日期:2004-01-25 发布日期:2004-01-25

DIFFUSION AND CUT-OFF CHARACTERISTICS OF SA/CS-CaCl₂/PMCG MICROCAPSULES

ZHANG Liyang;YAO Shanjing;GUAN Yixin

Online:2004-01-25 Published:2004-01-25

摘要/Abstract

摘要： 通过测定不同相对分子质量的PEG传递透过SA/CS-CaCl₂/PMCG生物微胶囊的性能，确定了SA/CS-CaCl₂/PMCG膜的截留相对分子质量在2000左右。同时又测量了小分子物质葡萄糖、乳糖、乙醇和谷氨酸在3种SA/CS-CaCl₂/PMCG微胶囊中的扩散性能，并用数学模型计算出了这些物质在不同微胶囊的混合扩散系数D_m以及相应的微胶囊膜层中扩散系数D₁。结果表明： D_m随PMCG浓度的增大先增大而后呈减小趋势，而D₁则随PMCG浓度的增大而增大；并且D₁《D_m,说明微胶囊中的传质阻力主要在微胶囊膜层中。

关键词:

扩散性能, 截留性能, SA/CS-CaCl₂/PMCG生物微胶囊

Abstract: By measuring diffusion behavior of PEG with various molecular mass in SA/CS-CaCl₂/PMCG microcapsules, it was shown that molecular mass cut-off of the microcapsules membrane was about 2000. Meanwhile, diffusion of small solutes including glucose, lactose, ethanol and L-glutamic acid in three kinds of SA/CS-CaCl₂/PMCG microcapsules were determined. The mixed diffusion coefficients D_m and diffusion coefficients in capsular membrane D₁ were calculated by a diffusion model. The results showed that the mixed diffusion coefficients Dm increased at first and subsequently slightly decreased with increasing concentration of PMCG, whereas D₁ increased continuously. D₁《D_m indicated that the main resistance in mass transfer was mainly on the capsular membrane.

Key words:

扩散性能, 截留性能, SA/CS-CaCl₂/PMCG生物微胶囊

张立央, 姚善泾, 关怡新. SA/CS-CaCl₂/PMCG新型生物微胶囊的扩散与截留性能 [J]. 化工学报, 2004, 55(1): 74-80.

ZHANG Liyang, YAO Shanjing, GUAN Yixin. DIFFUSION AND CUT-OFF CHARACTERISTICS OF SA/CS-CaCl₂/PMCG MICROCAPSULES[J]. CIESC Journal, 2004, 55(1): 74-80.

SA/CS-CaCl₂/PMCG新型生物微胶囊的扩散与截留性能

DIFFUSION AND CUT-OFF CHARACTERISTICS OF SA/CS-CaCl₂/PMCG MICROCAPSULES

PDF (PC)

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 0

编辑推荐

Metrics

本文评价