Star amphiphilic block copolymers: synthesis via polymerization-induced self-assembly and crosslinking within nanoparticles, and solution and interfacial properties
| Autor: | Sijia Qian, Guang Han, Keyu Shi, Rui Liu, Wangqing Zhang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
chemistry.chemical_classification
Materials science Polymers and Plastics Organic Chemistry Nanoparticle Bioengineering Polymer Biochemistry Chemical engineering chemistry Polymerization Amphiphile Copolymer Molar mass distribution Reversible addition−fragmentation chain-transfer polymerization Self-assembly |
| Zdroj: | Polymer Chemistry. 11:2532-2541 |
| ISSN: | 1759-9962 1759-9954 |
| DOI: | 10.1039/c9py01656b |
| Popis: | The star amphiphilic block copolymer of star-[poly(N-isopropylacrylamide)-block-polystyrene] [s-PNIPAM-b-PS] is synthesized via RAFT polymerization by combining polymerization-induced self-assembly (PISA) and crosslinking within the linear block copolymer nanoparticles. This strategy affords convenient synthesis of star s-PNIPAM-b-PS with a high molecular weight and a narrow molecular weight distribution. This star s-PNIPAM-b-PS exists as dispersed nanospheres in both common solvents and block-selective solvents, and the size of star s-PNIPAM-b-PS nanospheres is not seriously affected by the polymer concentration, which is different from that of the linear poly(N-isopropylacrylamide)-block-polystyrene [PNIPAM-b-PS] block copolymer counterpart. The solution properties, thermoresponse and interfacial properties of star s-PNIPAM-b-PS are investigated, which were found to be significantly different from those of linear PNIPAM-b-PS. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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