Dispersion and vulcanization characteristics of nitrile rubber reinforced with N,N‐dimethylacetamide/lithium chloride treated silica

Abstract

N,N-Dimethylacetamide/lithium chloride (DMAc/LiCl) treated silica is used as a reinforcing filler in nitrile rubber (NBR). Effect of the treatment on aggregate morphology and dispersion of silica in the matrix is investigated using XPS, SEM, and AFM. Binding energy levels of O1s and Si2p electrons in DMAc/LiCl treated silica have shifted significantly from 532.49 to 530.98 eV and 103.19 to 101.33 eV respectively. SEM observations have revealed a reduction in the agglomerate size of silica-a desirable feature for realizing better processing properties of silica filled rubber compounds. Data from AFM observations have also shown better dispersion of DMAc/LiCl treated silica. Mooney viscosity of masterbatches, measured at 100 C over a period of 7 days, has not

Evaluation of performance properties of poly(styrene‐co‐butadiene) rubber reinforced with N,N‐Dimethylacetamide/lithium chloride treated precipitated silica

“…It is time required to reach 5 Mooney units higher than from the lowest value and primarily used to understand the processing safety of rubber compounds. Cure time, t 35, is the time required to reach 35 Mooney units from the lowest value under standard test conditions 49 . Scorch time indicates the time available for the rubber compound to maintain flow before vulcanization sets in and thus offers an idea of processing safety of the compound.…”

Enhancing CO2 transport with plasma-functionalized ionic liquid membranes

“…XPS characterization was conducted on both untreated and plasma-treated samples to assess changes in surface valence and elemental composition resulting from plasma treatment. The survey spectrum of these samples is illustrated in figure 6 ] exhibits a singular signal peak at 531.42 eV, associated with the −OH bond and potentially arising from water molecules adsorbed on the sample surface [31]. In contrast, the O1s signal of the plasma-treated sample clearly reveals the presence of oxygen-containing groups.…”