Document Details

Document Type : Article In Journal 
Document Title :
Preparation of cationic latent initiators containing imidazole group and their effects on the properties of DGEBA epoxy resin
Preparation of cationic latent initiators containing imidazole group and their effects on the properties of DGEBA epoxy resin
 
Subject : Chemistry 
Document Language : English 
Abstract : The thermal cationic latent initiators, N-benzyl-3-methylimidazolium hexafluoroantimonate (BMH1) and N-butyl-3-methylimidazolium hexafluoroantimonate (BMH2) were synthesized and applied to the thermal cationic polymerization of diglycidyl ether of bisphenol A (DGEBA). The performance of BMH1 and BMH2 was examined by differential scanning calorimetry (DSC), which showed good thermal latent properties and excelled epoxy resin curing behavior. The morphology, thermal, mechanical, and water sorption properties of DGEBA resin cured by 1 wt% of BMH1 and BMH2 were measured by X-ray diffraction (XRD), scaming electron microscopy (SEM), thermogravimetric analysis (TGA), nanoindentation, and thin film diffusion analysis. The cured DGEBA/BMH1 system showed relatively higher thermal stability than the DGEBA/BMH2 system. The diffusion coefficient and water uptake were 14.2×10-9 cm2/s and 1.15 wt% for the DGEBA/BMH1 system and 11.5×10-9 cm2/s and 1.07 wt% for the DGEBA/BMH2 system, respectively. Therefore, DGEBA/BMH2 showed higher resistance to water sorption than DGEBA/BMH1. On the other hand, hardness and elastic modulus of DGEBA/BMH2 were higher than those of DGEBA/BMH1. This can be attributed to the difference in the end group of initiators as well as the degree of crosslinking in the cured resin network. 
ISSN : 1598-5032 
Journal Name : Macromolecular Research 
Volume : 19 
Issue Number : 10 
Publishing Year : 1432 AH
2011 AD 
Article Type : Article 
Added Date : Saturday, March 10, 2012 

Researchers

Researcher Name (Arabic)Researcher Name (English)Researcher TypeDr GradeEmail
Eui Soung JangJang, Eui SoungResearcherDoctorate 
شير بهادر خانKhan, Sher BahadarResearcherDoctorate 
Jongchul SeoSeo, Jongchul ResearcherDoctorate 
Kalsoom AkhtarAkhtar, Kalsoom ResearcherDoctorate 
Yoon Hee NamNam, Yoon HeeResearcherDoctorate 
Kwang Won SeoSeo, Kwang WonResearcherDoctorate 
Haksoo HanHan, Haksoo ResearcherDoctoratehshan@yonsei.ac.kr

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