## Abstract A novel technique to synthesize a macroporous poly(__N__‐isopropylacrylamide) hydrogel with ultrarapid swelling–deswelling properties by using dodecyl dimethyl benzyl ammonium bromide (DDBAB) during the polymerization/crosslinking reaction at −8°C was proposed. A hydrophobic initiator d
Deswelling characteristics of poly(N-isopropylacrylamide) hydrogel
✍ Scribed by Tae Gwan Park; Allan S. Hoffman
- Publisher
- John Wiley and Sons
- Year
- 1994
- Tongue
- English
- Weight
- 407 KB
- Volume
- 52
- Category
- Article
- ISSN
- 0021-8995
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## Abstract A series of poly(__N__‐isopropylacrylamide) (PNIPA) hydrogels was prepared by free‐radical crosslinking copolymerization of __N__‐isopropylacrylamide (NIPA) and __N__,__N__′‐methylenebisacrylamide (BAAm) in aqueous solutions of poly(ethylene glycol) of molecular weight 300 g/mol (PEG).
Poly(N-isopropylacrylamide ) ( NIPAAm) gels were formed by photopolymerization of NIPAAm in the absence of a crosslinker using a water solvent at 25ЊC. Factors affecting formation were the wavelength region of irradiated light, the type of photoinitiators, and the concentrations of the photoinitiato