Properties of natural and synthetic

The physical properties of these fibers are compared with those of natural fibers and other synthetic fibers in Table 1. Additional property data may be found in compilations of the properties of natural and synthetic fibers (1). Apart from the polyolefins, acryhcs and nylon fibers are the lightest weight fibers on the market. Modacryhcs are considerably more dense than acryhcs, with a density about the same as wool and polyester. 

The Properties of Natural and Synthetic Diamond, cd. J.E. Eield, Academic Press, London, 1992. 

Though as yet in its infancy, the application of laser Raman spectroscopy to the study of the nature of adsorbed species appears certain to provide unusually detailed information on the structure of oxide surfaces, the adsorptive properties of natural and synthetic zeolites, the nature of adsorbate-adsorbent interaction, and the mechanism of surface reactions. 

Gregor, W. Grabner, G. Adelwohrer, C. Rosenau, T. Gille, L. Antioxidant properties of natural and synthetic chromanol derivatives study by fast kinetics and electron spin resonance spectroscopy. J. Org. Chem. 2005, 70(9), 3472-3483. 

The general properties of natural and synthetic abrasives are given in Table I. Both natural and synthetic abrasives must be crushed to small particle size before bonding to cloth or paper for mounting on various tools See Table 2. 

As a consequence of the increasing number of biochemical problems involving free radicals, the use of scavenging and antioxidant compounds in the health, drugs, and food field has constantly grown. Different screening tests have been developed to determine the antioxidant properties of natural and synthetic antioxidant compounds. 

Because of the abundance of naturally-occurring molybdenite, there is little real incentive for the synthesis of molybdenum disulphide, but it has been synthesised in small quantities. In most earlier work syntheses have been carried out only for research purposes, either to investigate the synthesis reactions themseives or to compare the properties of natural and synthetic material. Larger quantities seem to have been synthesized only when a country with insufficient natural sources wanted to ensure a reliable indigenous supply. 

Evans T. (1992) Aggregation of nitrogen in diamond. In The Properties of Natural and Synthetic Diamond (ed. J. E. Field). Academic Press, London, pp. 259 -290. 

The systematic investigations of the structure and sorption properties of natural and synthetic zeolites are certainly central to the body of knowledge that will aid in the future research and utilization of zeolites in various possible ways. 

Table 3.3 Properties of natural and synthetic polymers for coating magnetic nanoparticles [189].

The chapter is focused on the analysis of plysical properties of natural and synthetic zeolites having G1S-, PH1-, MER-, MON, MAZ-, EON-, PAU-, LTL-, MOZ, and LlT-framewoik topologies. These natural silicates are included in the Mineral Reference Manual [91N1] as group Vin F14. In addition to aluminosilicate systems, the review includes also the fiamewoik structures with other ions, such as Be, P, Ga, Ge as well as some metal phosphanates and ultramicroporous coordination polymers. Since of limited extent of the review, not all the zeolites mentioned in Tables 1 will be extensively analyzed, for some of them only references are given or a short description of their structures. 

Influence of Trivalent Cations Due to the common presence of Al-substituted a-FeOOH in natural samples (well oxidized soils), the Impact of Al-substitution on the properties of natural and synthetic goethite was... 

The increasing use of bioplastics has opened entirely new generations of materials with new performances in comparison with traditional plastics. The possibility offered by physically modified starch to create functionalised nanoparticles able to modify the properties of natural and synthetic mbbers and other synthetic polymers, the naturally high oxygen barrier of starch and its derivatives, and their high permeability to water vapour already offer a range of completely new solutions to the plastic industry. 

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