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Synthesis and application of water‐based urethane acrylate crosslinking agent containing unsaturated group
Author(s) -
Noh Se Hee,
Choi Hee Sung,
Noh Si Tae
Publication year - 2000
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 - 10.1002/1097-4628(20001107)78:6<1216::aid-app60>3.0.co;2-8
Subject(s) - diol , polymer chemistry , acrylate , dynamic mechanical analysis , materials science , double bond , elongation , copolymer , chemistry , composite material , ultimate tensile strength , polymer
In this study, we synthesized 1,1,1‐trimethlyolpropane (TMP)‐based diol which has a pendant anionic group and a reactive double bond in the pendant cyclic ring. Then, a water‐based urethane acrylate crosslinking agent (CA) was prepared from isophrone diisocyanate (IPDI), 2‐hydroxyethyl acrylate (2‐HEA), and a low molecular weight diol bearing pendant carboxylic acid. The CA content was varied in order to investigate the influence of the added content on the mechanical and dynamic mechanical properties. The diol used in this study was TMP– cis ‐1,2,3,6‐tetrahydrophthalic anhydride (TPA) which was synthesized from the esterification reaction of TMP with TPA. This diol was liquid at room temperature. As the CA increased, the initial modulus and elongation at break decreased. Also, increase of the rubbery plateau modulus was observed by dynamic mechanical analysis (DMA). This result was believed to result from an increase in the crosslinking density in the mixtures. Shift of the T gh to a higher temperature was also observed by DMA. This is due to the increased hard segments and the phase separation. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1216–1223, 2000