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- Title
Thermoresponsive Diblock Copolymer with Tunable Soluble-Insoluble and Soluble-Insoluble-Soluble Transitions.
- Authors
Liu, Honglai; Yin, Quanyi; Zhang, Xuxia; Han, Xia; Hu, Jun; Hu, Ying
- Abstract
The thermoresponsive transition behavior of a diblock copolymer consisting of poly(ethylene glycol) methyl ether (mPEG) and poly( N, N-dimethylaminoethyl methacrylate) (PDMAEMA) in aqueous solutions has been investigated. With a specific composition, the copolymer showed a unique tunable phase transition from no response in acidic media to a soluble-insoluble (S-I) transition in neutral media and an S-I-S transition in basic media either in the presence of salt or for salt-free solutions. The S-I-S transition can be tuned over a wide temperature range even to an S-I type transition just by adding salts. In addition, phase transitions can occur in both pure water and saline solution under practical conditions (30-80 °C), which makes them suitable for a broad range of applications.
- Subjects
DIBLOCK copolymers; EFFECT of temperature on phase transformations (Physics); POLYETHYLENE glycol; WATER-soluble polymers; POLYMER solutions
- Publication
Macromolecular Rapid Communications, 2013, Vol 34, Issue 7, p574
- ISSN
1022-1336
- Publication type
Article
- DOI
10.1002/marc.201200785