Journal
MACROMOLECULAR RESEARCH
Volume 17, Issue 11, Pages 879-885Publisher
POLYMER SOC KOREA
DOI: 10.1007/BF03218630
Keywords
polyurethane; reactive hot melt adhesive; acrylic copolymer; Na-MMT; bond strength
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Funding
- Ministry of Knowledge Economy of the Korean Government [10018023]
- Korea Institute of Industrial Technology(KITECH) [10018023, 10018023_] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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A macroazoinitiator (MAI) containing a poly(ethylene glycol) (PEG) segment was intercalated in the gallery of sodium montmorillonite (Na-MMT). Acrylic monomers were polymerized using this MAI intercalated in Na-MMT to prepare the acrylic copolymer nanocomposite (AN), which is a multiblock copolymer composed of two segments, an acrylic copolymer and PEG intercalated in Na-MMT (Na-MMT/PEG). When AN was used to modify the reactive hot melt polyurethane adhesive (RHA), the acrylic copolymer segment and Na-MMT/PEG synergistically enhanced the initial bond strength evolution and reduced the set time, even when the amount of Na-MMT in RHA was <1 wt%. The viscosity of RHA increased and the tensile properties of the cured RHA film decreased due to modification with AN. These variations were more evident as the Na-MMT content in AN was increased.
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