Effects of Surface Modification

Indeed, all NRTPEs whose surfaces are either chlorinated or brominated have up to a ten times increase in bond strength. In contrast, EPTPEs such as EPDM/PP blends show no improvement in bond strength, since such materials do not have the necessary residual unsaturation to permit chemical addition of chlorine or bromine. The bond strength of EPTPEs can however be improved by gaseous fluorination of the surface. 

Some efforts have also been made to improve the tack of synthetic rubbers by other surface treatments such as ozone exposure [13] and irradiation of stocks containing photosensitisers and phenolic resins [14]. If the surface treatment can result in the reduction in MW of the surface molecules, it can contribute to the increased mobility of these molecules resulting in improved tack. However, this layer should remain as a thin boundary layer, otherwise it can result in reduced cohesive strength. Another way of improving the strength of tack 

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Fig. 1. Fquilihrium isotherms for adsorption on activated carbon at 298 K showing the effect of surface modification (2). —, SO2 -...

Effect of surface modification by low temperature plasma on the photocatalytic activity of TiOi thin film... 

Peddy, M. (1981). The bond strength of polycarboxylic acid cements to dentine effect of surface modification and time after extraction. Australian Dental Journal, 26, 178-80. 

V Labhasetwar, C Song, W Humphrey, R Shebuski, RJ Levy. Arterial uptake of biodegradable nanoparticles effect of surface modifications. J Pharm Sci 87(10) 1229-1234, 1998. 

Effect of surface modification on pull-out force of PPTA silicone rubber composite ... 

The effect of surface modification of the 2 photoelectrode by other oxide materials has been also investigated by several research groups. For example, Zaban et al. prepared a nanocrystalline 2 photoelectrode coated with a... 

McCreery and co-workers have investigated the redox reactions for several redox analytes at glassy carbon electrodes, and have summarized the categorization of redox systems according to the effects of surface modification on electrode kinetics [1-3]. These redox analytes in the present study are known to be sensitive or insensitive to the electronic properties, surface microstructure, and surface termination of the carbon electrodes. 

Figure 34.27 Effect of surface modification of Teflon surface on bubble size, number in parenthesis indicate the contact angle of water.

Figure 6.29 shows, as an example, the effect of surface modification on the sta-bihty of sihcon electrode in an aqueous solution. The bare sihcon surface is quickly passivated in aqueous solution under illumination. Coating the electrode with a layer of either ferrocene or polypyrrole gives an improvement in the stabihty. The stability is further improved by a two-layer coating of ferrocene/polypyrrole as shown in Fig. 6.29. 

H. Koyama and N. Koshida, Photoelectrochemical effects of surface modification of n-type Si with porous layer, J. Electrochem. Soc. 138 254, 1991. 

Shimizu, Y. Bartolomeo, E. D. Traversa, E. Gusmano, G. Hyodo, T. Wada, K Egashira, M., Effect of surface modification on N02 sensing properties of Sn02 varistor-type sensors, Sens. Actuators B 1999, 60, 118-124... 

Applications. ESCA was used in studies of polyurethane containing metal salts, to determine the distribution of silica in a PVA matrix, to analyze surface groups of carbon black,observe the effect of surface modification on the surface composition of composites. 

Braggs, B. et al.. The effect of surface modification by an organosilane on the electrochemical properties of kaolinite. Clays Clay Miner., 42, 123, 1994. 

The effect of surface modification of nanocrystal 7702 with specific chelating agents such as arginine, lauryl sulfate and salicylic acid was investigated by the photocatalytic degradation of nitrobenzene (NB). The results of the study are shown in Table 6 [362],... 

J. Gilron, S. Belfer, P. Vaisanen, M. Nystrom, Effects of surface modification on antifouling and performance properties of reverse osmosis membranes, Desalination, 140 (2001) 167-179. 

Figure 9 shows the effect of surface modification of 2b film on the oxygen plasma etching. The etching rate of 2b film without modification was 0.08 m/min under the present etching conditions. It was almost the same as that observed for poly(methyl methacrylate) film. The sample film was irradiated at 254 nm (10 mJ/cm2) and subsequently exposed to the vapor of MTEOS for 5 min at 30 C. The etch rate of the modified film was lower than 1/40 compared to that of the unmodified... 

Figure 9. Effect of surface modification on the etching rate of 2b film.

Prior to the flood, hospital and university researchers had designed a study protocol to investigate the effect of surface modification wifli silane antimicrdnals on infection rates within the Bone Marrow Transplant, Hematology and Oncology areas in the hospital. The flood and subsequent microbial contamination preempted the study. But, investigation of various antimicrobial systems to achieve sustained microbial control during the study provided an important tool for use in remediation and beyond. 

Belfer, S., Ghron, J., Purison, Y, et al. 2001. Effect of surface modification of commercial SWRO membranes at Eilat seawater desahnation plant. 139 169-178. 

Zhang, D. and Chang, J. 2009. Effects of surface modification of P-CaSi03 on electrospun polyfbutylenes succinate)/p-CaSi03 composite fibers. Afate/ Chem. Phvs. 118 379-384. 

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