Feasible Fabrication of Hollow Micro-vesicles by Non-amphiphilic Macromolecules Based on Interfacial Cononsolvency
| Autor: | Gaojian Chen, John L. Brash, Hong Chen, Jinghong Wang, Rui Chen, Jie Shen, Yan Luo, Ziqing Zhao, He Yang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
chemistry.chemical_classification
010407 polymers Aqueous solution Materials science Polymers and Plastics General Chemical Engineering Vesicle Organic Chemistry Radical polymerization Polymer 01 natural sciences 0104 chemical sciences chemistry Chemical engineering Amphiphile Copolymer Dissolution Macromolecule |
| Zdroj: | Chinese Journal of Polymer Science. 39:856-864 |
| ISSN: | 1439-6203 0256-7679 |
| DOI: | 10.1007/s10118-021-2541-z |
| Popis: | Herein we present a new perspective showing that water-soluble liquids, when added to water, undergo transient emulsification before complete dissolution. Thus, non-amphiphilic macromolecules can self-assemble at the two-miscible-phase interface when cononsolvent effect appears. A representative case shown here is that when poly(N-isopropylacrylamide) (PNIPAm), prepared by aqueous radical polymerization, in methanol solution is added into water, the polymer chains rapidly self-assemble into hollow micro-vesicles based on the cononsolvency at water/methanol interface. This finding provides a subtle strategy to prepare hollow micro-vesicles by non-amphiphilic polymers without template participating. We proposed a new concept “interfacial cononsolvency” to describe the formation process. Due to the easy modification process, sugar-contained PNIPAm chains are synthesized by copolymerization. As an application example, it is shown that these sugar-contained PNIPAm chains can afford “sweet” micro-vesicles (containing glucose residues). And the “sweet” micro-vesicles can well mimick the protocells which are involved in the recognition of bacteria. |
| Databáze: | OpenAIRE |
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