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Analysis and evaluation of the ionic interaction of the novel soft contact lenses using the zwitterionic polymer gel
Author(s) -
Yamazaki Yoshiko,
Matsunaga Toru,
Ichinokawa Aya,
Fujishiro Yoko,
Saito Emi,
Sato Takao
Publication year - 2009
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.30777
Subject(s) - cationic polymerization , polymer , pulmonary surfactant , ionic bonding , thermal stability , materials science , chemical engineering , polymer chemistry , ionic strength , nonionic surfactant , chemistry , composite material , aqueous solution , organic chemistry , ion , engineering
Abstract In the zwitterionic polymer gel which has cationic and anionic groups inside, it forms a complex to producing stability by adding thermal energy. We reported the behavior induced by the ionic interaction of them and the impact that a nonionic surfactant could exert on the complex formation. We had heating experiments of the zwitterionic polymer gel in PBS with a nonionic surfactant added. We analyzed DSC and measured the diameter, stress and flexure of heated the gel. As the result, it has been demonstrated that formation of strong ionic interactions inside the gel can be achieved by heating them in a solution containing the nonionic surfactant. It has been also demonstrated that the ratio of bound water is increased within the gel, promising an enhanced strength. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009