Elastomers and Composites
- Volume 34 Issue 5
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- Pages.399-406
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- 1999
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- 2092-9676(pISSN)
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- 2288-7725(eISSN)
Synthesis and Emulsification of Polyurethane Anionomer
음이온성 폴리우레탄의 합성 및 에멀젼화에 관한 연구
- Ann, Choun-Kee (Dept. of Chemistry, Chongju University) ;
- Jin, Je-Yong (Dept. of Chemistry, Chongju University) ;
- Lee, Gyung-Won (Dept. of Industrial Chemistry, Chungju University) ;
- Choi, Sei-Young (Dept. of Chemistry, Chongju University)
- Published : 1999.12.31
Abstract
Polyurethane (PU) prepolymers were synthesized from polytetramethylene ether glycol (PTMG), 4,4'-diphenylmethane diisocyanate (MDI), toluene 2,4-diisocyanate (TDI) and isophoron diisocyanate (IPDI). After chain extention using dimethyol propionic acid (DMPA), aqueous polyurethane anionomers were prepared from triethyl amine (TEA) as a neutralizer. The effect of the content of chain extender and the degree of neutralization on the state of emulsification, adhesive strength, viscosity, glass transition temperature and physical properties of emulsion cast film were investigated using UTM, Viscometer and DSC.
Polytetramethylene ether glycol (PTMG)와 4,4'-diphenylmethane diisocyanate (MDI), toluene 2,4-diisocyanate(TDI), isophoron diisocyanate(IPDI)로 polyurethane (PU) prepolymer를 합성하고, dimethylol propionic acid(DMPA)로 쇄연장시킨 후 triethyl amine(TEA)으로 중화시켜서 안정한 수분산성의 음이온성 폴리우레탄을 제조하였다. 음이온성 폴리우레탄의 합성과정에서 쇄연장제의 함량과 중화비에 따른 에멀젼의 유화안정성, 접착강도, 점도, 유리전이온도 및 cast film의 물리적 성질을 UTM, Viscometer와 DSC를 사용하여 검토하였다.