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Synthesis of Well-defined High Molecular Weight 3-Arm Star Poly ( methyl methacrylate ) Using the “ Core-First ” Method by Atom Transfer Radical Polymerization
| Content Provider | Semantic Scholar |
|---|---|
| Author | Mas'ud Ali, Roushown Hasan, Tariqul |
| Copyright Year | 2015 |
| Abstract | A trifunctional initiator tris(ethyl 2-bromo-2-methyl propionate)amine (TrisE) was prepared by esterification of triethanolamine with 2-Bromo-2-methylpropionyl bromide. 3-arm star poly(methyl methacrylate) (PMMA) with a narrow molecular weight distribution (MWD = 1.34-1.43) was successfully synthesized using TrisE and CuBr/bipyridine catalytic system by atom transfer radical polymerization (ATRP). In the catalytic system of TrisE/CuBr/Bipyridine =1:3:6, the better catalytic activity was observed at 80 C than that of observed at 60 C or 70 C. The star poly(methyl methacrylate) with hightest molecular weight and narrow MWD was also obtained at 80 C than those of the PMMA obtained at 60 C and 70 C. The polymer yield and the molecular weight of the polymers were increased with increasing the concentration of MMA. H NMR analysis PMMA indicated that the polymerization reaction was initiated with TrisE. Key wordsAtom transfer radical polymerization, Star polymer, Trifunctional initiator. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://dept.ru.ac.bd/ic4me2/2015/proceedings/pdfs/141.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
