Epoxy – Polysulfide copolymers without or with low amounts of epoxy in their structure have poor mechanical properties in oxidative curing system.To strengthen the mechanical properties of polysulfide elastomer inclusion of epoxy resin (Epon828) as hard segment was studied. FT-IR spectroscopy and rheometry were used to verify the formation of epoxy-polysulfide copolymer.  Results obtained f...

Abstract A series of polyester prepolymers was synthesized from itaconic acid, phthalic anhydride, propane-1,2-diol and diethylene glycol by condensation polymerization. The use acid as a source unsaturation (instead more common maleic anhydride giving fumarate moieties) enabled to replace styrene reactive diluent methyl methacrylate. Room temperature curing model resin initiated butanone perox...

In this work, a novel dual-curing procedure has been developed. It is combination of first radical UV-initiated thiol-(meth)acrylate reaction, followed by second thermal thiol-epoxy step catalysed base. Since (meth)acrylates can lead to homopolymerization mechanism, the amount thiol be optimized reach cross-linked materials with Tgs above room temperature and good mechanical performance. should...

storage conditions influence quality of gladiolus corms which thereby affects qualityof flowers. in the present study, the effects of pre-storage curing and differenttemperature conditions on corm germination and various vegetative and reproductivegrowth parameters of gladiolus grandiflorus cv. white prosperity and gladiolusgrandiflorus cv. ruse supreme were studied. application of pre-storage ...

The paper deals with the curing behaviour of diglycidyl ether of bisphenol-A (DGEBA) using three novel multifunctional aromatic amines having phosphine oxide and amide-acid linkages. The amines were prepared by reacting tris(3-aminophenyl)phosphine oxide (TAP) with 1,2,4,5-benzenetetracarboxylic acid anhydride (P)/4,4-(hexafluoroisopropylidene)diphthalic acid anhydride (F)/3,3,4,4-benzophenonet...

Biobased composites were successfully prepared using raw materials derived from biomass waste, i.e., an epoxy resin obtained cardanol and nanocellulose unbleached hemp fibers. The by solvent exchange impregnation of the cellulosic mat with resin, followed photocuring. Quantitative conversion was obtained, despite high amount fibers (30 wt%) their absorbance in UV region light spectrum. X-ray di...