高等学校化学学报 ›› 2022, Vol. 43 ›› Issue (12): 20220460.doi: 10.7503/cjcu20220460

• 研究论文 • 上一篇    下一篇

一步法高通量可控制备生物相容水/水微囊及其响应释放

翟小威1,2, 潘湄蝶3, 石盼2, 赵鹏3, 陈东1,2,3()   

  1. 1.浙江省智能生物材料重点实验室, 浙江大学化学工程与生物工程学院, 杭州 310027
    2.浙江大学能源工程学院, 能源清洁利用国家重点实验室, 杭州 310003
    3.浙江大学医学院附属第一医院肿瘤内科, 杭州 310003
  • 收稿日期:2022-07-06 出版日期:2022-12-10 发布日期:2022-08-15
  • 通讯作者: 陈东 E-mail:chen_dong@zju.edu.cn
  • 基金资助:
    国家重点研发计划项目(YS2021YFC30000089);浙江省自然科学基金(Y20B060027);国家自然科学基金(21878258)

One-step High-throughput Controlled Preparation of Biocompatible Water/Water Microcapsules with Triggered Release

ZHAI Xiaowei1,2, PAN Meidie3, SHI Pan2, ZHAO Peng3, CHEN Dong1,2,3()   

  1. 1.Zhejiang Key Laboratory of Smart Biomaterials,College of Chemical and Biological Engineering,Zhejiang University,Hangzhou 310027,China
    2.College of Energy Engineering,State Key Laboratory of Clean Energy Utilization,Zhejiang University,Hangzhou 310003,China
    3.Department of Medical Oncology,the First Affiliated Hospital,School of Medicine,Zhejiang University,Hangzhou 310003,China
  • Received:2022-07-06 Online:2022-12-10 Published:2022-08-15
  • Contact: CHEN Dong E-mail:chen_dong@zju.edu.cn
  • Supported by:
    the National Key Research and Development Program of China(YS2021YFC3000089);the Zhejiang Provincial Natural Science Foundation, China(Y20B060027);the National Natural Science Foundation of China(21878258)

摘要:

生物相容水/水微囊在药物递送、 医学治疗等领域具有重要应用. 本文通过设计同轴微流控器件, 结合数值模拟优化和流动阻力分析, 实现一步法高通量可控制备大小均匀、 尺寸可控、 壁厚可调、 生物相容的水/水微囊. 采用实验研究和数值模拟相结合的方式, 研究了微流控器件结构、 内相流速、 外相流速、 外相/空气界面张力、 内相/外相界面张力、 内相黏度和外相黏度等参数对水/水微囊直径和壁厚的调控规律. 通过微通道流动阻力分析, 设计多通道平行放大微流控器件, 实现尺寸均匀可控水/水微囊的高通量制备. 验证了生物相容水/水微囊作为活性物质的理想载体, 可以通过改变pH或溶解囊壁释放载体, 进而实现活性物质的pH响应释放, 为其实际应用奠定了基础.

关键词: 微流控, 微通道, 微囊, 可控释放, 平行放大

Abstract:

Biocompatible water/water microcapsules are of great significance for drug delivery and medical therapy. In this paper, co-axial microfluidic devices were designed via the optimization by numerical simulations and the analysis of flow resistance to realize one-step high-throughput controlled preparation of water/water microcapsules with good uniformity, tunable size and shell thickness, and excellent biocompatibility. Specifically, the influences of device design, inner phase flow rate, outer phase flow rate, outer phase/air interfacial tension, inner phase/outer phase interfacial tension, inner phase viscosity and outer phase viscosity on the diameter and shell thickness of water/water microcapsules were systematically investigated by means of experiments and simulations. By carefully analyzing the flow resistance of microchannels, microfluidic devices were parallelly amplified to achieve high-throughput preparation of water/water microcapsules with controlled size. Biocompatible water/water microcapsules are ideal delivery vehicles for various actives, showing controlled pH-triggered release of encapsulated cargos, which pave the way for their practical applications.

Key words: Microfluidics, Microchannel, Microcapsule, Controlled release, Parallel amplification

中图分类号: 

TrendMD: