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A. Mititelu, C. N. Cascaval

On the curing reaction of an epoxy resin based on mesogenic naphthalene

derivative (in English)

Polimery 2005, No 11-12, 839




Summary

The curing reaction of diglycidyl ether of 2,7-dihydroxynaphthalene (2,7-DGEDHN), epoxy mesogenic monomer, in the presence of the curing agents, namely, 4,4'-methylene-bis(3-chloro-2,6-diethylaniline) (MCDEA), 2,7-diaminofluorene (DAF) or 2-aminobiphenyl (2-ABP), was studied using differential scanning calorimetry (DSC), optical microscopy under crossed polarizers and wide angle X-ray scattering (WAXS) techniques. The curing reaction of 2,7-DGEDHN/MCDEA mixture led to a product without liquid crystalline properties. The product obtained by the curing reaction of 2,7-DGEDHN/DAF mixture is characterized by a texture of smectic-like structure of Schlieren type. The curing reaction of 2,7-DGEDHN/2-ABP mixture led to an isotrope non-crosslinked product.


Key words: epoxy resins, liquid crystalline polymers, curing, differential scanning calorimetry, wide angle X-ray scattering, optical microscopy under crossed polarizers


A. Mititelu, C. N. Cascaval

On the curing reaction of an epoxy resin based on mesogenic naphthalene derivative (in English)