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Indian Journal of Chemistry -Section A (IJC-A) >
IJC-A Vol.50A [2011] >
IJC-A Vol.50A(06) [June 2011] >
| Title: | Thermoresponsive polystyrene-b-poly(N-isopropylacrylamide) copolymers by atom transfer radical polymerization |
| Authors: | Shinde, Vaishali S
Girme, Madhavi R
Pawar, Vishwas U |
| Keywords: | Polymerization
Atom transfer radical polymerization
Copolymers
Block copolymers
Thermoresponsive polymers
Poly(N-isopropylacrylamide)
Polystyrene |
| Issue Date: | Jun-2011 |
| Publisher: | NISCAIR-CSIR, India |
| Abstract: | Atom transfer radical
polymerization has been employed for the polymerization of styrene initiated by
ethyl-2-bromoisobutyrate
in anisole at 100 °C with Cu(I)Br/PMDETA as the catalytic system. Kinetic
investigations reveal that polymerization of styrene proceeds in a controlled
manner with a first order plot of monomer consumption and with low
polydispersity (Mw/Mn < 1.10). Well defined
thermoresponsive diblock copolymer has been successfully synthesized using
PS-Br macroinitiator. The amphilphilic behaviour of the diblock copolymers
leads to phase separation resulting in two glass transition temperatures as
detected by DSC. TGA analysis also shows the two-step decomposition. |
| Page(s): | 781-787 |
| CC License: |  CC Attribution-Noncommercial-No Derivative Works 2.5 India |
| ISSN: | 0975-0975(Online); 0376-4710(Print) |
| Source: | IJC-A Vol.50A(06) [June 2011]
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