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Increase of content

It was determined, that the increasing of content of the mineral component leads to the increasing of the thermal stability of the PAn/nano-Ti02-<5 composite in comparison with individual polyaniline, but to the decreasing of electric conductivity of samples. [Pg.192]

As it s shown in the table 1, the increase of organic filler content in compounded mix leads to deterioration of flexibility. The introduce of organic filler brings the strength increase. While the increase of content of inorganic filler (till 20%) brings noticeable deformation, though the durability decreases. [Pg.94]

Decrease with increase of contents PhOC mechanical parameters the block-copolyesters speaks redistribution of the relative contribution of plasticization and strengthening of intermolecular interaction (IMI) both in dmability, and in the module of elasticity. Thus it is important to note, that phosphinic an acid and phosphinoxyde at high contents render more effective complex influence on mechanical behavior of compositions rather high mechanical parameters and growth of the module of elasticity. General, though and in a different degree expressed, result - reduction b, and influence on parameters of plasticity of polymer. [Pg.128]

Loosen structures of blocks-copolymers can occm at increase of contents PhOC on various mechanisms. However it is obvious, that efficiency of the additive now in the greater degree is determined, except for structural features, volumetric characteristics (steric the... [Pg.128]

As it was shown, the mean temperatures of vitrification, which are different form Ty of homopolymers, are observed for all the specimens in a high temperature area With the increase of content of PTMO blocks the meanings of Ty move to the area of a low temperature. Moreover in BCR, containing up to 40% PTMO blocks, a partial combination of PC and PTMO blocks take place and Tyi of plasticized PC phase and Tm2 PTMO phase is observed for them only. If contents of PTMO blocks in BCR is more than 30% of its weight, a more complex apportionment into separate phases, which are characterized by their vitrification temperatures (Ty2) and melting (Tn,2), is observed. [Pg.155]

The relationship between the permeability coefficient and content of grains smaller than 2 mm is shown in Figure 3, from which it can be seen that in general, the permeability coefficient declines gradually with the increase of content of grains smaller than 2 mm. This is consistent with the result of corresponding test (Xu 2001). [Pg.797]

Bekuzarova, S. A. Antonov, O. V Fedorov, A. K. Method of Increase of Content of Protein In Green Mass of Winter Triticale. Patent 2212777. Pubhshed on 27.09.2003. [Pg.270]

The structure of residual austenite is metastable, during exploitation it may panially transform into bainite, whereas during quenching this transformation may be caused by the freezing out processing. The transformation of residual austenite into bainite is connected with volume change, whereas diminishing the content of austenite in martensite by 1% causes a 0,07% increase of its volume. [Pg.18]

The percolation argument is based on the idea that with an increasing Cr content an insoluble interlinked cliromium oxide network can fonn which is also protective by embedding the otherwise soluble iron oxide species. As the tlireshold composition for a high stability of the oxide film is strongly influenced by solution chemistry and is different for different dissolution reactions [73], a comprehensive model, however, cannot be based solely on geometrical considerations but has in addition to consider the dissolution chemistry in a concrete way. [Pg.2725]

Other authors have attributed the improved corrosion resistance with increasing Cr content with the increasing tendency of the oxide to become more disordered [69]. This would then suggest that an amoriDhous oxide film is more protective than a crystalline one, due to a bond and stmctural flexibility in amoriDhous films. [Pg.2725]

The hydration shell is formed with the increasing of the water content of the sample and the NA transforms from the unordered to A- and then to B form, in the case of DNA and DNA-like polynucleotides and salt concentrations similar to in vivo conditions. The reverse process, dehydration of NA, results in the reverse conformational transitions but they take place at the values of relative humidity (r.h.) less than the forward direction [12]. Thus, there is a conformational hysteresis over the hydration-dehydration loop. The adsorption isotherms of the NAs, i.e. the plots of the number of the adsorbed water molecules versus the r.h. of the sample at constant temperature, also demonstrate the hysteresis phenomena [13]. The hysteresis is i( producible and its value does not decrease for at least a week. [Pg.117]

Finally the influence of the temperature and addition of ethanol on the enantioselectivity of the Diels-Alder reaction was studied. Table 3.3 summarises the results for different aqueous media. Apparently, changes in temperature as well as the presence of varying amounts of ethanol have only a modest influence on the selectivity of the Cu(tryptophan)-catalysed Diels-Alder reaction in aqueous solution. However, reaction times tend to increase significantly at lower temperatures. Also increasing the alcohol content induces an increase of the reaction times. [Pg.93]

Use the molecular weight ratio to calculate the apparent extent of reaction of the caprolactam in these systems. Is the variation in p qualitatively consistent with your expectations of the effect of increased water content in the system Plot p versus moisture content and estimate by extrapolation the equilibrium moisture content of nylon-6 at 255 C. Does the apparent equilibrium moisture content of this polymer seem consistent with the value given in Sec. 5.6 for nylon-6,6 at 290°C ... [Pg.343]

The properties of SAN resins depend on their acrylonittile content. Both melt viscosity and hardness increase with increasing acrylonittile level. Unnotched impact and flexural strengths depict dramatic maxima at ca 87.5 mol % (78 wt %) acrylonitrile (8). With increasing acrylonitrile content, copolymers show continuous improvements in barrier properties and chemical and uv resistance, but thermal stabiUty deteriorates (9). The glass-transition... [Pg.192]

Diarrhea is a common problem that is usually self-limiting and of short duration. Increased accumulations of small intestinal and colonic contents are known to be responsible for producing diarrhea. The former may be caused by increased intestinal secretion which may be enterotoxin-induced, eg, cholera and E. col] or hormone and dmg-induced, eg, caffeine, prostaglandins, and laxatives decreased intestinal absorption because of decreased mucosal surface area, mucosal disease, eg, tropical spme, or osmotic deficiency, eg, disaccharidase or lactase deficiency and rapid transit of contents. An increased accumulation of colonic content may be linked to increased colonic secretion owing to hydroxy fatty acid or bile acids, and exudation, eg, inflammatory bowel disease or amebiasis decreased colonic absorption caused by decreased surface area, mucosal disease, and osmotic factors and rapid transit, eg, irritable bowel syndrome. [Pg.202]

Particular drawbacks of using alkylsiHcon and alkyltin haHdes with AlCl for the cationic polymerization of terpenes are low yields and the fact that they require rigorously dried feeds (<50 ppm H2O) to be effective. Increased water content results in lower yields and lower softening points (85). Catalyst systems comprised of AlCl with antimony haHdes in the presence or absence of a lower alkyl, alkenyl, or aralkyl haHde are particularly effective in systems containing up to 300 ppm H2O (89,90). Use of 2—12 wt % of a system composed of 2—3 parts AlCl, 0.7—0.9 parts SbCl, and 0—0.2 parts of an organic... [Pg.356]

The detrimental effects of Si addition are (/) Si iacreases the yield strength and decreases the ductiHty of iron such that commercial-grade materials are limited to ca 4% Si, and (2) as shown ia Eigure 3, the saturation iaduction and Curie temperature are decreased with increasing siHcon content. [Pg.369]

Milk consists of 85—89% water and 11—15% total soflds (Table 1) the latter comprises soflds-not-fat (SNF) and fat. Milk having a higher fat content also has higher SNF, with an increase of 0.4% SNF for each 1% fat increase. The principal components of SNF are protein, lactose, and minerals (ash). The fat content and other constituents of the milk vary with the animal species, and the composition of milk varies with feed, stage of lactation, health of the animal, location of withdrawal from the udder, and seasonal and environmental conditions. The nonfat soflds, fat soflds, and moisture relationships are well estabhshed and can be used as a basis for detecting adulteration with water (qv). Physical properties of milk are given in Table 2. [Pg.350]


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