In situ synthesis of the Ag/poly(4-vinylpyridine)-block-polystyrene composite nanoparticles by dispersion RAFT polymerization
| Autor: | Hui Liu, Wangqing Zhang, Mingdu Ding, Zhonglin Ding, Chengqiang Gao |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
chemistry.chemical_classification
Nanocomposite Materials science Polymers and Plastics Organic Chemistry Nanoparticle Bioengineering 02 engineering and technology Polymer Degree of polymerization 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Biochemistry 0104 chemical sciences chemistry.chemical_compound chemistry Polymer chemistry Copolymer Reversible addition−fragmentation chain-transfer polymerization Polystyrene 0210 nano-technology Dispersion (chemistry) |
| Zdroj: | Polymer Chemistry. 8:3203-3210 |
| ISSN: | 1759-9962 1759-9954 |
| DOI: | 10.1039/c7py00473g |
| Popis: | Metal/block-copolymer composite nanoparticles have been attracting considerable interest and are usually prepared by incorporating metal nanoparticles or metal ions into pre-prepared block copolymer nanoparticles. Herein, a new method of one-pot synthesis of the colloid-like metal/block-copolymer nanocomposites of poly(4-vinylpyridine)-block-polystyrene (P4VP-b-PS) and Ag nanoparticles by dispersion RAFT polymerization is proposed. This method employs the chelate polymer of poly(4-vinylpyridine) trithiocarbonate (P4VP-TTC) as both a macro-RAFT agent for dispersion RAFT polymerization and a stabilizer for Ag nanoparticles, and it affords a convenient synthesis of the Ag/P4VP-b-PS composite nanoparticles. Ag nanoparticles are uniformly embedded in the P4VP-b-PS nanoparticles to result into Ag/P4VP-b-PS composited nanoparticles. It is found that the size of the Ag/P4VP-b-PS composite nanoparticles increases either with the degree of polymerization of the polystyrene block or with the Ag fraction in the nanocomposites. This dispersion RAFT polymerization in the presence of a macro-RAFT agent stabilized metal nanoparticles is believed to be an efficient method to synthesize concentrated metal/block-copolymer nanocomposites. |
| Databáze: | OpenAIRE |
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