Chem. J. Chinese Universities ›› 2022, Vol. 43 ›› Issue (12): 20220460.doi: 10.7503/cjcu20220460

• Article • Previous Articles     Next Articles

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)

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

CLC Number: 

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