Laser induced phase transition in aqueous solutions of hydrophobically modified poly(N-isopropylacrylamide)

Johan Hofkens*, Jun Ichi Hotta, Keijl Sasaki, Hiroshi Masuhara, Herman Faes, Frans De Schryver

*Corresponding author for this work

Research output: Contribution to journalArticle

16 Scopus citations

Abstract

Phase transitions of amphiphilic copolymer solutions can be achieved by irradiating aqueous solutions of this polymer with an IR-laser beam. As a result, a single microparticle up to 15 μm formed, whereas thermal heating of the solution results in submicrometer particles. Both the photo-thermal effect (due to absorption of 1064 nm by the H2O overtone) and the radiation force cause the unusual large particle formation (up to 15 μm). Furthermore, the present study shows that the conformational distribution and associations of polymers in solution can be controlled with the radiation force of a focused laser beam.

Original languageEnglish
Pages (from-to)165-172
Number of pages8
JournalMolecular Crystals and Liquid Crystals Science and Technology Section A: Molecular Crystals and Liquid Crystals
Volume283
DOIs
StatePublished - 1 Jan 1996

Fingerprint Dive into the research topics of 'Laser induced phase transition in aqueous solutions of hydrophobically modified poly(N-isopropylacrylamide)'. Together they form a unique fingerprint.

  • Cite this