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A study of colored siloxane‐based polyurethane ionomer
Author(s) -
Kuo Y. M.,
Ku K. Y.,
Lin H. C.,
Wang N. H.,
Chwang C. P.,
Chao D. Y.
Publication year - 1998
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/(sici)1097-4628(19980912)69:11<2097::aid-app1>3.0.co;2-b
Subject(s) - ionomer , polyurethane , siloxane , polymer chemistry , ultimate tensile strength , aqueous solution , materials science , chemistry , chemical engineering , composite material , organic chemistry , polymer , copolymer , engineering
The reaction of dye with toluene diisocyanate and dimethyldichlorosilane in the presence of other additives to form a colored siloxane‐based polyurethane (PU) ionomer has been proven to occur by infrared spectra. In aqueous solution, the number‐average particle size for the colored siloxane‐based PU ionomer was found to increase with an increase in the NCO‐to‐OH ratio, dye concentration, and dimethyldichlorosilane concentration, as a result of increased free volume of the ionomer molecules. It is worthy to note that the amount of air diffusing into the film cast from colored siloxane‐based PU ionomer was found to increase with an increase in the concentration of dimethyldichlorosilane instead of raising the ratio of NCO to OH or the concentration of dye, as a result of the formation of more porosities. In addition, the tensile strength of this film will be strengthened by raising the NCO/OH ratio or the concentration of dimethyldichlorosilane, whereas the elongation, on the other hand, can be substantially increased with increasing the concentration of dye instead of increasing the concentration of dimethyldichlorosilane for use in the PU ionomer system. © 1998 John Wiley & Sons, Inc. J Appl Polym Sci 69: 2097–2105, 1998