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Investigation of the self‐association behavior of a thermosensitive copolymer with lower critical solubility temperature near human heat by dynamic laser light scattering
Author(s) -
Yin Weisi,
Yang Hu,
Zhang Xueqin,
Wang Zhiliu,
Ding Yanwei,
Zhang Guangzhao,
Cheng Rongshi
Publication year - 2005
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.21484
Subject(s) - copolymer , dynamic light scattering , monomer , lower critical solution temperature , materials science , solubility , aqueous solution , polymer chemistry , light scattering , thermodynamics , chemical engineering , scattering , polymer , chemistry , composite material , optics , nanotechnology , physics , engineering , nanoparticle
The special thermosensitive copolymer with lower critical solubility temperature near human heat of 37°C in aqueous solution has been prepared successfully by copolymerizing N ‐isopropylacrylamide (NIPAM) and N ‐isopropylmethacrylamide (NIPMAM) randomly at an appropriate monomer ratio. The self‐association behavior of the poly[NIPAM‐ ran ‐NIPMAM] copolymer has been studied by dynamic laser light scattering (DLLS) at a concentration higher than the critical concentration of the self‐association calculated from viscosity data according to cluster theory. The effect of the concentration and temperature on the self‐association behavior in water has been discussed respectively. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 96: 583–588, 2005