Novel Method of Producing Polymer Gels in Aqueous Solution Using UV Irradiation

✍ Scribed by Fumiyoshi Ikkai; Eiki Adachi

• Publisher: John Wiley and Sons
• Year: 2004
• Tongue: English
• Weight: 106 KB
• Volume: 25
• Category: Article
• ISSN: 1022-1336
• DOI: 10.1002/marc.200400196

✦ Synopsis

Abstract

Summary: We developed a novel method of producing polymer gels in aqueous solution using UV irradiation. Persulfates were effective photosensitive initiators of polymerization and/or gelation of acryloyl‐type monomers/polymers. The gelation was confirmed by an abrupt increase in light scattering intensity, 〈I(q)〉~T~, at the gelation point. The gelation method entails significant advantages: it does not need any cross‐linkers, temperature control (heating), and additives except the persulfate.

The UV irradiation time dependence of light scattering intensity, 〈I(q)〉~T~, for pre‐gel solutions containing N‐isopropylacrylamide (NIPAm) and/or ammonium persulfate (APS).

imageThe UV irradiation time dependence of light scattering intensity, 〈I(q)〉~T~, for pre‐gel solutions containing N‐isopropylacrylamide (NIPAm) and/or ammonium persulfate (APS).