Loading...
Please wait, while we are loading the content...
Similar Documents
Synthesis of amphiphilic A2B star‐shaped copolymers of polystyrene‐b‐[poly(ethylene oxide)]2 via atom transfer nitroxide radical coupling
| Content Provider | Semantic Scholar |
|---|---|
| Author | Huang, Kun Huang, Jian Pan, Mugang Wang, Guowei Huang, Junlian |
| Copyright Year | 2012 |
| Abstract | The amphiphilic A2B star-shaped copolymers of polystyrene-b-[poly(ethylene oxide)]2 (PS-b-PEO2) were synthesized via the combination of atom transfer nitroxide radical coupling (ATNRC) with ring-opening polymerization (ROP) and atom transfer radical polymerization (ATRP) mechanisms. First, a novel V-shaped 2,2,6,6-tetramethylpiperidine-1-oxyl-PEO2 (TEMPO-PEO2) with a TEMPO group at middle chain was obtained by ROP of ethylene oxdie monomers using 4-(2,3-dihydroxypropoxy)-TEMPO and diphenylmethyl potassium as coinitiator. Then, the linear PS with a bromine end group (PS-Br) was obtained by ATRP of styrene monomers using ethyl 2-bromoisobutyrate as initiator. Finally, the copolymers of PS-b-PEO2 were obtained by ATNRC between the TEMPO and bromide groups on TEMPO-PEO2 and PS-Br, respectively. The structures of target copolymers and their precursors were all well-defined by gel permeation chromatographic and nuclear magnetic resonance (1H NMR). © 2012 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem, 2012 |
| Starting Page | 2635 |
| Ending Page | 2640 |
| Page Count | 6 |
| File Format | PDF HTM / HTML |
| DOI | 10.1002/pola.26037 |
| Volume Number | 50 |
| Alternate Webpage(s) | http://www.polymer.fudan.edu.cn/polymer/research/huangjl/%E8%AF%BE%E9%A2%98%E7%BB%84%E8%AE%BA%E6%96%87/2012%20Synthesis%20of%20Amphiphilic%20A2B%20Star-shaped%20Copolymers.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
