Synthesis and application of a novel multifunctional isocyanate-terminated polyurethane prepolymer

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  • School of Chemistry Engineering,Jiangsu Ocean University,Lianyungang 222005

Received date: 2020-02-16

  Revised date: 2021-02-21

  Online published: 2021-06-10

Abstract

Isocyanate-terminated polyurethane prepolymer (QASs-PEG-NCO) containing quaternary ammonium cation and salicylaldehyde unit was synthesized from N,N-dimethyl-N-(3-formyl-4-hydroxybenzyl)-N-(hydroxyl polyethylene glycol-600) ammonium chloride (QASs-PEG-600) and toluene diisocyanate (TDI).The structures of QASs-PEG-NCO and QASs-PEG-600 were characterized by FT-IR and 1H-NMR.The results showed that the free TDI concentration in QASs-PEG-NCO solution was lower than 0.20%,and NCO content was close to the theoretical value when the initial NCO/OH of the raw materials was 2.02,the reaction temperature was 60℃ and the reaction time was 2h.As an active multi-functional coating,QASs-PEG-NCO was applied to the post-chemical modification of thermoplastic polyurethane film(TPUF).It was found that the modified TPUF surface was highly hydrophilic and could effectively prevent the adhesion and growth of E.coli and S.aureus on TPU surface.

Cite this article

Fan Bianhua, Shen Chen, Wu Shining, Zhang Tianlin . Synthesis and application of a novel multifunctional isocyanate-terminated polyurethane prepolymer[J]. New Chemical Materials, 2021 , 49(5) : 78 -83 . DOI: 10.19817/j.cnki.issn 1006-3536.2021.05.018

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