Elastomers and Composites
- Volume 33 Issue 3
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- Pages.177-184
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- 1998
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- 2092-9676(pISSN)
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- 2288-7725(eISSN)
Study on the Synthesis of Polyurethane Cationomers and Their Mechanical Properties
양이온성 폴리우레탄의 합성 및 기계적 특성에 관한 연구
- Ann, Choun-Kee (Dept. of Chemistry, Chongju University) ;
- Jin, Je-Yong (Dept. of Chemistry, Chongju University) ;
- Choi, Sei-Yong (Dept. of Chemistry, Chongju University)
- Published : 1998.07.31
Abstract
Polyurethane(PU) prepolymers were synthesized from polytetramethylene ether glycol(PTMG), with 4,4'-diphenylmethane diisocyanate(MDI), toluene 2,4-diisocyanate (TDI) and isophoron diisocyanate(IPDI). After chain extention using n-methyl-diethanol amine(n-MDEA), aqueous polyurethane cationomers were prepared by addition of glycolic acid(GA) as a quaternizer. The effect of the content of chain extender and the degree of neutralization on the stability of emulsion, 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), tol-uene 2,4-diisocyanate (TDI), isophoron diisocyanate(IPDI)로 polyurethane(PU) prepolymer를 합성, n-methyl-diethanol amine(n-MDEA)로 쇄연장시킨 후 glycolic acid(GA)로 quaternization시켜서 안정한 수분산성의 양이온성 폴리우레탄을 제조하였다. 양이온성 폴리우레탄의 합성과정에서 쇄연장제의 함량과 quaternization에 따른 에멀젼의 유화안정성, 접착강도, 점도, 유리전이온도 및 cast film의 물리적 성질을 UTM, Viscometer와 DSC를 사용하여 검토하였다.