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Ultraviolet absorbers composites

Compton DL, Kenar JA, Laszlo JA, Felker FC. 2007. Starch-encapsulated, soy-based, ultraviolet-absorbing composites with feruloylated monoacyl- and diacylglycerol lipids. Indust Crop Prod 25 17-23. [Pg.74]

Because polycarbonates are good light absorbers, ultraviolet degradation does not occur beyond a depth of 0.030-0.050 in (0.075-0.125 cm). Whilst this is often not serious with moulded and extruded parts, film may become extremely brittle. Improvements in the resistance of cast film may be made by addition of an ultraviolet absorber but common absorbers cannot be used in moulding compositions because they do not withstand the high processing temperatures. [Pg.573]

In a separate investigation by Kent et al. (3) latex compositions containing poly(methyl methacrylate-co-hexyl acrylate) were prepared containing the ultraviolet absorber monomer Norbloc 7966. [Pg.114]

The ultraviolet absorbance of many proteins is due to the presence of amino acids with aromatic side chains. Gelatin, a derivative of collagen (Chap. 4), has an unusual composition, with a low proportion of aromatic amino acids. [Pg.70]

Use of quantitative spectral measurements to analyze the composition of proteins for their ultraviolet-absorbing components was thoroughly reviewed by Beaven and Holiday (1952). Analysis has been limited to the... [Pg.378]

The methods which have been described for measurement of the organic content of water are based on oxidation of organic matter and measurement of the products. Another direct method for determining the organic content of natural waters based on measurement of ultraviolet absorbance of water (Mattson et al., 1974). This method can only be successfully employed when the composition of oi anic matter remains similar over the area sampled and as such may find only limited application. Correlation of results of the ultraviolet absorbance method with those of the persulfate oxidation method for samples of coastal and marsh waters was very poor (Wheeler, 1977). [Pg.427]

H. Du, W. Wang, Q. Wang, S. Sui, and Y. Song, Effects of ultraviolet absorbers on the ultraviolet degradation of rice-hull/high-density polyethylene composites. /. Appl. Polym. Sci. 126, 906-915 (2012). [Pg.367]

Asami, H. Yamada, N. Ibi, M. Water-thinned color ink composition containing ultraviolet absorber for writing tool. Jpn. Kokai Tokkyo Koho JP 2003306630, 2003 Chem. Abstr. 2003,139, 366454. [Pg.174]

To the LC polyester composition additives can also be used in the form of antioxidants and heat stabilizers such as a hindered phenol, hydroquinones, phosphites etc. Another additives, also added as required, can be mentioned as, ultraviolet absorber (resorcinol, salicylate etc.), color protecting agent (phosphate, hypo-phosphite etc.), lubricant and mold lubricant (stearyl alcohol, stea-ramide etc.) [137]. [Pg.323]

Weishaar, J.L. et al.. Evaluation of specific ultraviolet absorbance as an indicator of the chemical composition and reactivity of dissolved organic carbon. Environ. Sci. Technol, 37, 4702, 2003. [Pg.447]

Apart from this gravitational effect, there are composition changes due to chemical reactions induced by light. These are caused by absorption of ultraviolet light in the upper atmosphere. For example, oxygen absorbs ultraviolet light and the energy taken up by the molecule exceeds the... [Pg.438]

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See also in sourсe #XX -- [ Pg.533 ]



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Ultraviolet absorbers

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