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Copolymerization of Organo Silane with Butoxyacrylamide Monomer and Its Physical Properties

  • Han, Jong Hee (Dept. of Polymer Engineering, Pukyong National University) ;
  • Ko, Byeng In (Research & Development, Jeil Chemical Corp., Ltd.) ;
  • Lee, Won-Ki (Dept. of Polymer Engineering, Pukyong National University) ;
  • Park, Chan Young (Dept. of Polymer Engineering, Pukyong National University)
  • Received : 2019.04.30
  • Accepted : 2019.05.15
  • Published : 2019.06.30

Abstract

Many scientific approaches have been developed for the preparation of alternative crosslinker system of amino resins and isocyanate prepolymers. Herein, copolymerization of trimethoxy silane with N-butoxymethyl acrylamide was performed, and the product was reacted with hydroxyl groups in the alkyl main chain without the need for an additional crosslinker. For the crosslinker synthesized herein, the molecular weight, glass transition temperature, and viscosity increased with increasing content of N-butoxymethyl acrylamide.

Keywords

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Figure 1. Curing process between polyol and isocyanate.

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Figure 2. Curing reaction between acryl polyol and melamine resin.

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Figure 3. Experimental apparatus for polymerization.

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Figure 4. Copolymer of methoxy silane and N-butoxymethyl acrylamide monomer.

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Figure 5. β-scission reactions of t-butoxy and t-amyloxy radicals.

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Figure 6. GPC analysis data of silane-amide copolymer.

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Figure 7. Molecular weights of copolymer synthesized with various composition.

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Figure 8. DSC results of copolymers; (a) Trimethoxy silane homopolymer, (b) 5 wt% N-butoxymethyl acrylamide added, (c) 10 wt% N-butoxymethyl acrylamide added, (d) 20 wt% N-butoxymethyl acrylamide added.

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Figure 8. Continued.

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Figure 9. Glass transition temperature of copolymers.

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Figure 10. Viscosities of copolymers.

Table 1. Test Formula for Polymerization

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