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The properties of reactive hot melt polyurethane adhesives modified with novel thermoplastic polyurethanes
Author(s) -
Kim Tae K.,
Kim Byung K.,
Kim Yong S.,
Cho Yang L.,
Lee Sang Y.,
Cho Youn B.,
Kim Joe H.,
Jeong Han M.
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.30730
Subject(s) - materials science , peg ratio , montmorillonite , ultimate tensile strength , adhesive , ethylene glycol , thermoplastic polyurethane , composite material , polyurethane , rheology , thermoplastic , thermoplastic elastomer , polymer chemistry , chemical engineering , polymer , copolymer , elastomer , finance , layer (electronics) , engineering , economics
A reactive hot melt adhesive (RHMA) consisting of thermoplastic polyurethane (TPU) was modified with sodium montmorillonite (Na‐MMT) intercalated with poly(ethylene glycol) (PEG), and their effects on the adhesion, rheological, and mechanical properties of the RHMA were examined. The Na‐MMT intercalated with PEG (Na‐MMT/PEG) effectively enhanced the initial bond strength development of the RHMA, although the amounts of Na‐MMT/PEG in the RHMA were less than 0.2%. The increase of the complex viscosity and pseudo‐solid like behavior observed at low shear rate indicates that there are intimate interactions between the RHMA molecules and Na‐MMT/PEG. The improved modulus and tensile strength of the cured RHMA film in the presence of Na‐MMT/PEG demonstrates that Na‐MMT/PEG effectively reinforced the RHMA. © 2009 Wiley Periodicals, Inc. J Appl Polym Sci, 2009