Elastomers and Composites

The Rubber Society of Korea (한국고무학회)
권호 표지

Synthesis and Characteristics of Cationic Polyurethane-Acrylates as a Retention Aid

양이온성 폴리우레탄-아크릴레이트계 보류향상제의 합성 및 특성

  • Han, Chul (Department of Chemical Eng., Chosun University) ;
  • Kim, Doo-Won (ShinJin Chem. Ind Co. Ltd.) ;
  • Yoon, Doo-Soo (Department of Polymer Sci. & Eng., Chosun University) ;
  • Kim, Sun (Department of Food Science, Chosun College of Science & Technology) ;
  • Hong, Wan-Hae (Department of Chemical Eng., Chosun University) ;
  • Kim, Jung-Gyu (Department of Chemical Eng., Chosun University)
  • 한철 (조선대학교 공과대학 화학공학과) ;
  • 김두원 (신진화학공업(주) 부설연구소) ;
  • 윤두수 (조선대학교 공과대학 고분자공학과) ;
  • 김선 (조선이공대학 식생활과) ;
  • 홍완해 (조선대학교 공과대학 화학공학과) ;
  • 김정규 (조선대학교 공과대학 화학공학과)
  • Published : 2004.09.30
Download PDF
⟨ Previous Next ⟩

Abstract

Two types of polyurethane-acrylate polymer were synthesized by reaction of 2-hydroxyethyl methacrylate(HEMA), acrylamide(AA), and polyurethane prepolymer. Water-soluble cationic polyurethane/acrylate retention aids were prepared by using polyurethane-acrylate, benzyl chloride and distilled water. The retention, drainage and strength properties of the retention aids were investigated. The retention of cationic polyurethane/acrylate type retention aids maintained around 70 % regardless of nm. COD value of white water was much reduced by adding the retention aids to it. Drainage property was also improved by addition of the retention aids. In addition, specific compression strength of the paper was improved a little by addition of the retention aids. PU-HEMA type showed better performance than PU-AA in terms of compression strength of the paper.

Polyurethane prepolymer에 2-hydroxyethylmethacrylate(HEMA)와 acrylamide(AA)를 반응 시켜 두 가지 타입의 polyurethane-acrylate 중합체들을 합성하였다. 합성된 중합체들을 소량의 benzyl chloride와 증류수를 이용하여 수용성 중합체인 폴리우레탄-아크릴레이트계 양이온성 보류향상제를 제조하였다. 이렇게 두 가지 형태로 제조된 중합체에 대하여 보류향상제로서 중요한 특성인 보류, 탈수특성 및 비압축강도 등의 물성들을 다양한 방법으로 고찰하였다. 합성된 폴리우레탄-아크릴레이트계 양이온성 보류향상제는 rpm에 따라 큰 변화 없이 70% 내외의 보류도를 유지하였으며, 합성한 보류향상제의 첨가로 인한 화학적 산소 요구량(COD)의 경우는 미첨가시의 COD보다 상당히 낮은 값이 관찰되었다. 탈수량의 경우 무처리한 펄프보다 보류향상제의 처가 시에 탈수성이 향상되었으며, 보류향상제의 첨가 시 비압축강도가 소량 증가되었고, PU-HEMA가 PU-AA보다 우수한 강도를 나타내었다.

Keywords

References

  1. 김용식, '탈수제의 개발동향', 공업화학전망, 5, 35 (2002)
  2. A. swerin, G. Risinger, L. Odberg, 'Flocculation in suspensions of microcrystalline cellulose by microparticle retention aid system:', J. Pulp & Paper Sci., 23, 8 (1997)
  3. G. Petzold, H. M. Buchhammer, K. Lunkwitz, 'The use of oppositely charged polyelectrolytes as flocculants and retention aids', Colloids and Surfaces A, 119, 92 (1996)
  4. 藤本武彦, 高分子藥劑入門, 三洋化成工業株式會社, 420 (1992)
  5. Lindstrom, T., 'Some Fundamental Chemical Aspects on Paper Forming', in 'Fundamentals of Papermaking', C. F. Baaker and V. W. Punton, Eds., Trans. Ninth Fundam Res. Symp. At Cambridge, Mech. Eng. Publ. Ltd., London, p.311 (1989)
  6. 함충현, 양이온성 구아검을 이용한 마이크로파티클 보류시스템, 서울대학교, 석사학위논문, 2000
  7. 'Wet and dry strength short course note', TAPPI press, Atlanta, LA (1998)
  8. Hilpolit., K. J. Ed., 'Chemical Processing Aid in papermaking: A practical Guide' , TAPPI press (1992)
  9. G. Petzold, H. M. Buchhammer, K. Lunkwitz, 'The use of oppositely charged polyelectrolytes as flocculants and retention aids', Colloids, Surfaces A; physieochem. Eng. Aspects, 119, 187 (1996)
  10. Ahmad Yekta, Bai Xu, Mitchell A. Winnik, 'The functionaIity of associative polymer networks: the association behavior of hydrophobically modified urethane-ethoxylate(HEUR) associative polymers in aqueous solution', Colloids and Surfaces A: physieochem. Eng. Aspects, 112, 239 (1996) https://doi.org/10.1016/0927-7757(96)03558-3
  11. 'Advanced Topics in wet and Chemistry seminar notes', TAPPI press, Atlanta, LA (2001)
  12. K. C. Tam, R. D. Jenkins, M. A. Winnik, D. R. Basset, 'A structural model of hydrophobically modified urethane-ethoxylaate(HEUR) associative polymers in shear flows', Macromolecules, 31, 4149 (1998) https://doi.org/10.1021/ma980148r
  13. H. X. Xiao, K. C. Frisch Ed., 'Advances in urethane ionomers', Technomic Publ. Ltd., USA, p.111 (1995)