Stable polymer brushes with effectively varied grafting density synthesized from highly crosslinked random copolymer thin films
| Autor: | Su-Mi Hur, Woo Jung Lee, Ga Ryang Kang, Sangwon Kim, Hyungoo Kang, Keewook Paeng, Myungwoong Kim, Sol An |
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| Rok vydání: | 2018 |
| Předmět: |
chemistry.chemical_classification
Materials science Atom-transfer radical-polymerization General Chemical Engineering technology industry and agriculture macromolecular substances 02 engineering and technology General Chemistry Polymer 010402 general chemistry 021001 nanoscience & nanotechnology Methacrylate Grafting 01 natural sciences 0104 chemical sciences chemistry.chemical_compound chemistry Chemical engineering Copolymer Surface modification Thin film Methyl methacrylate 0210 nano-technology |
| Zdroj: | RSC Advances. 8:24166-24174 |
| ISSN: | 2046-2069 |
| DOI: | 10.1039/c8ra04480e |
| Popis: | We demonstrate the synthesis of poly(methyl methacrylate) (PMMA) and poly(styrene-b-methyl methacrylate) (P(S-b-MMA)) brushes on crosslinked random copolymer thin films, compositionally varied poly(styrene-r-glycidyl methacrylate) (P(S-r-GMA)), which can be further functionalized with a molecule featuring an initiator group upon crosslinking to form highly stable thin films. With careful optimizations, PMMA brushes were successfully grown from the surfaces of initiator functionalized P(S-r-GMA) via surface-initiated atom transfer radical polymerization. The grafting densities of the PMMA and P(S-b-MMA) brushes were effectively controlled to be in different density regimes by controlling the composition of P(S-r-GMA) and post-crosslinking functionalization methods. Synthesized BCP brushes were stable upon repetitive washing and thermal annealing processes even at high grafting density, highlighting that the outstanding stability of crosslinked P(S-r-GMA) thin films enables close examination of the morphology of thermally annealed P(S-b-MMA) brushes in different grafting density regimes. |
| Databáze: | OpenAIRE |
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