Synthesis and Water Repellency of Polymers with Fluorinated Alkyl Group and Isocyanate Group

불소화 알킬기와 이소시아네이트기를 가지는 고분자의 합성과 발수성

  • Baek Chang-Hoon (Department of Polymer Science, Kyungpook National University) ;
  • Kong Jong-Yun (Department of Polymer Science, Kyungpook National University) ;
  • Hyun Seok-Hee (Department of Polymer Science, Kyungpook National University) ;
  • Lim Yong-Jin (Digital Textile Printing Division, Korea Dyeing Technology Center) ;
  • Kim Woo-Sik (Department of Polymer Science, Kyungpook National University)
  • 백창훈 (경북대학교 고분자공학과) ;
  • 공종윤 (경북대학교 고분자공학과) ;
  • 현석희 (경북대학교 고분자공학과) ;
  • 임용진 (한국염색기술연구소 디리피센터) ;
  • 김우식 (경북대학교 고분자공학과)
  • Published : 2005.09.01

Abstract

The copolymers were prepared by the emulsion copolymerization of fluoroalky lacrylate-stearylacrylate-m-isopropenyl-${\alpha},\;{\alpha}'$-dimethylbenzyl isocyanate (TMI) in order to obtain water repellent polymers. The respective copolymerization rates of the three monomers considerably depended upon the use of the nonionic emulsifier and the nonionic-cationic mixed emusifier, and the optimum conditions were obtained. The particle sizes of the copolymers were in the range of 105 to 222nm. The particle sizes of the copolymers prepared by the use of the mixed emulsifiers were smaller than those of the copolymers prepared by the use of the nonionic emulsifier. The reactions of both TMI-N-methyl acetamide and TMI-cellobiose did not take place. However, the reaction of TMI-n-butylamine occurred. The water contact angles before and after washing three times for nylon and poly(ethylene terephthalate) (PET) fabrics coated with the copolymer prepared by the use of mixed emulsifier were about $139^{\circ}\;and\;133^{\circ}$ Therefore, the copolymer showed good durable repellency for nylon and PET.

내구발수성 고분자를 얻기 위해 불소화 알킬아크릴레이트-스테아릴아크릴레이트-m-이소프로페닐-$\alpha,\;alpha$-디메틸벤질 이소시아네이트(TMI)를 유화중합시켜 불소화 알킬기와 이소시아네이트기를 가지는 공중합체를 제조하였다. 3 단량체의 공중합속도는 비이온 유화제 및 비이온-양이온 혼합 유화제의 사용에 따라 상당히 의존하였고 그 최적조건을 얻었다. 공중합체의 입자크기는 105에서 222nm의 범위에 있었고 비이온-양이온의 혼합 유화제에 의해 만들어진 공중합체가 비이온 유화제로 만들어진 공중합체보다 입자가 작았다. 나일론과 면의 모델 화합물로 N-메틸아세트아미드와 셀로비오스 각각과 TMI는 반응하지 않았다. 반면에 TMI와 부틸아민은 실온에서 반응하였다. 혼합 유화제에 의해 제조된 공중합체를 코팅한 나일론과 PET 천에 대한 세탁 전후의 물의 접촉각은 $139^{\circ}$$133^{\circ}$ 정도였다. 따라서 공중합체의 내구발수성은 우수하였다

Keywords

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