Volume phase transition behavior of N-isopropyl acrylamide–N-cyanomethyl acrylamide copolymer gel particles: The effect of crosslinking density
✍ Scribed by Hyun Seok Choi; Jong Min Kim; Kee-Jung Lee; Young Chan Bae
- Publisher
- John Wiley and Sons
- Year
- 1999
- Tongue
- English
- Weight
- 180 KB
- Volume
- 72
- Category
- Article
- ISSN
- 0021-8995
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✦ Synopsis
We prepared submicron-sized N-isopropyl acrylamide (NIPA)-N-cyanomethyl acrylamide (NCMA) copolymer gel particles by precipitation polymerization. Volume phase transition behaviors of gel particles with various compositions and crosslinking density were observed by using photon correlation spectroscopy (PCS). The experimental data showed that both the volume transition temperature and the swelling ratio of copolymer gel particles were varied with the mole ratio of NCMA and NIPA. We compared the swelling behaviors of given systems with the thermodynamic model based on the extended Flory-Huggins theory.