Clay dispersion effects on excimer laser ablation of polymer–clay nanocomposites

Abstract

The ablation behavior of polystyrene‐organically modified montmorillonite (OMMT) nanocomposites was evaluated by measuring the weight loss induced by KrF excimer laser irradiation of the nanocomposite specimens under air atmosphere. The characteristic values of ablation, ablation threshold fluence, and effective absorption coefficient for polystyrene and its nanocomposites were calculated based on the weight loss data. The effects of morphology due to spatial variation in injection molded samples are also discussed in this article. Results demonstrate that both the dispersion state and the concentration of clay play important roles in excimer laser ablation. The sensitivity of threshold fluence and absorption coefficient to dispersion state of OMMT seem to depend on the clay concentration. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 130: 2336–2344, 2013

Tribological Properties of Fabric Self-Lubricating Liner Based on Organic Montmorillonite (OMMT) Reinforced Phenolic (PF) Nanocomposites as Hybrid Matrices

“…In general, the addition of proper OMMT content to the liner improves the antifriction property (low friction coefficient) of the fabric self-lubricating liner. However, the particle aggregation occurs in the case of high additive content [43], which is detrimental for the antifriction property of the fabric self-lubricating liner, as is the case of liner with 5 wt% OMMT. Fig.…”

“…Consequently, the particle agglomeration was more pronounced [43]. Particle agglomeration increases the surface roughness and breaks the uniformity of the transfer film and the tribosurface, which in turn accelerates both friction and wear of the liner.…”