Influence of Modified Epoxy Resins on Peroxide Curing, Mechanical Properties and Adhesion of SBR, NBR and XNBR to Silver Wires—Part II: Application of Carboxy-Containing Peroxy Oligomer (CPO)

Abstract

This research was aimed at verifying the effect of carboxy-containing peroxy oligomer (CPO) addition on the possibility of rubber crosslinking and a subsequent adhesion of the modified rubber to silver wires. Three commonly industrially used rubbers were selected for the study: styrene–butadiene rubber (SBR), acrylonitrile–butadiene rubber (NBR) and carboxylated acrylonitrile–butadiene rubber (XNBR), together with carboxy-containing peroxy oligomer (CPO). An improvement in the adhesion of rubbers to silver wires was observed when applying the oligomeric peroxide with functional groups, with no deterioration of mechanical properties of the vulcanizates. Crosslinking synergy between dicumyl peroxide (DCP) and the modifier could hardly be observed. Nevertheless, the studies demonstrated, that to a small extent, even the CPO itself can crosslink NBR and especially XNBR, resulting in a material of notable elasticity and adhesion to silver wires.

Development and Application of a Poly(acrylic acid)-Grafted Styrene–Butadiene Rubber as a Binder System for Silicon-Graphite Anodes in Li-Ion Batteries

“…FTIR was performed on the primary SBR starting material, the poly( tert -butyl acrylate)- g -(styrene butadiene rubber) (Ptba- g -SBR) intermediate, and the final PAA- g- SBR copolymer product. In Figure a, the pure SBR sample displayed characteristic bands at 3025 cm –1 (aromatic C–H styrene stretching), 2917/2847 cm –1 (CH 2 aliphatic C–H stretching), 1601/1493 cm –1 , (CC/C–C stretching in styrene), 1451 cm –1 (aromatic CC bending in styrene units), 966 cm –1 (1,4- trans -butadiene), 755 cm –1 (1,4 cis isomers), 910 cm –1 (1,2-vinylbutadiene), and 697 cm –1 (styrene C–H bending). , The spectrum of the Ptba- g -SBR intermediate displayed similar characteristic bands to that of the SBR starting material, with additional peaks at 1718 cm –1 (CO ester stretch) and 1150 cm –1 (C–O stretch) from the tert -butyl acrylate side chains. Finally in the PAA- g -SBR spectrum, a broad peak appeared at 3394 cm –1 (O–H stretching), indicating that the hydrolysis of the tert -butyl groups was successful …”

Green Synthesis of Functionalized Poly(3-Glycidoxypropyl-Trimethoxysilane) Using an Eco-Catalyst (Treated Montmorillonite)

“…Low molecular weight polymers (i.e., oligomers) having different functional groups in their structure are widely applied as modifiers and initiators for polymer blends. [1][2][3][4][5][6][7] Recently, epoxy resins have been used to synthesize the functional oligomers. 8,9 The choice of epoxy resins for the synthesis of oligomers with functional groups stems from the fact that the resins contain reactive epoxy groups in their structure, which can easily react with active hydrogen compounds of a low molecular weight.…”

Synergistic Effect of BaCl2 on Corrosion Inhibition of Copper by Mentha Spicata Oil in 1M Nitric Acid: Gravimetric and Raman Spectroscopy Studies

“…They are widely used for the production of epoxy resins, epoxy composites, and bio-based epoxy thermosets. [1][2][3][4][5][6][7][8][9] Moreover, epoxides are key materials for fine chemical synthesis due to their ring-opening activity. [10][11][12][13][14][15][16][17][18] Nowadays, the catalytic cycloaddition of CO 2 to different epoxides attracts considerable attentions of researcher all over the world as an efficient way for cyclic carbonates production as well as one of the best possible strategy for carbon dioxide neutralization by its fixation and recycling.…”

“…[19][20][21][22][23][24][25] Nevertheless, the direct epoxidation of unsaturated compounds with chemical oxidants, e.g., organic hydroperoxides, leads to the formation of undesired by-products and is ineffective in many cases. The application of appropriate catalysts can solve the problem and improve 1 Lviv Polytechnic National University, 12, S. Bandery St., Lviv, 79013, Ukraine  zkomaren@gmail.com  Komarenska Z., Oliynyk L., Makota O., 2023 the epoxide yield. Therefore, much attention has been focused on the application of different catalysts on the base of transition metal for the epoxidation process.…”