Use of SAXS to characterize the morphology of poly(polyethylene glycol diacrylate)/epoxy resin interpenetrating networks


Autoria(s): Tan SS; Zhang DH; Zhou E
Data(s)

1997

Resumo

Interpenetrating polymer networks (IPNs) have been synthesized from prepolymers that form miscible blends. All IPNs made from polyacrylate ((polyethylene glycol diacrylate), PEGDA) and epoxy (diglycidyl ether of bisphenol A, DGEBA) can be made in phase separated states by incorporating crosslinks. However, blends of these prepolymers, having a negative Flory-Huggins interaction parameter, are highly miscible. This indicates that formation of IPNs favours phase separation relative to blends. The microphase separation characteristics in the PEGDA/DGEBA IPNs were determined using smalt-angle X-ray scattering (SAXS). The Debye-Bueche and Guinier methods were used to calculate the correlation lengths of the segregated phases existing in the PEGDA/DGEBA IPNs. The results from SAXS showed that the size of the phase segregation zones changed with composition from about 50 to 100 Angstrom.

Identificador

http://ir.ciac.jl.cn/handle/322003/24461

http://www.irgrid.ac.cn/handle/1471x/156958

Idioma(s)

英语

Fonte

Tan SS;Zhang DH;Zhou E.Use of SAXS to characterize the morphology of poly(polyethylene glycol diacrylate)/epoxy resin interpenetrating networks,POLYMER INTERNATIONAL,1997,42(1):90-94

Palavras-Chave #POLYMER NETWORKS #DOMAIN SIZES #POLYURETHANE #SEPARATION #ACRYLATE
Tipo

期刊论文