Degradation, resistance

The hydrogenated products are nitrile rubber, with good heat resistance, and styrene-butadiene-styrene copolymer, with high tensile strength, better permeability and degradation resistance. 

Kumar, S. and Agarwal, S.C. (1983). Biological degradation resistance of wood acetylated with thioacetic acid. International Research Group on Wood Preservation, Doc. No. IRGAVP 3223. 

One interesting approach that has been suggested is to improve the corrosion resistance of carbon blacks by coating them with WC.i Depositing Pt onto WC-treated carbon has been shown to improve cycle degradation resistance to 1.8 V. 

Figure 4.3 shows the major parts of a recycle system. In practice, however, depending on municipal wastewater treatment systems to treat normal industrial effluents is impractical. The effluent may contain degradation-resistant chemicals... 

Degradation-resistance. Unexpected material degradation is usually caused by hydrolysis, oxidization, enzymolysis, lipid invasion or calcification. The talent of degradation-resistance is essential for materials used in permanent implants. 

Boven [5] prepared polycarbonates consisting of dimethyl bisphenol cyclohexane and phosphine. Copolymers of dimethyl bisphenol cyclohexane with bisphenol and interfacial phosgene, (V), were also prepared and were used as glass panes because they exhibited enhanced scratch and molecular weight degradation resistance. 

Despite its oxygen content, polyester (i.e., the aromatic polyethylene terephthalate) is degradation-resistant probably because of its rigid, rod-like chains. The same is true for polyamides in spite of their nitrogen content. 

Thallium, bismuth, and lead based HTSCs are relatively degradation-resistant and are therefore convenient systems for conducting electrochemical changes in the oxygen stoichiometry. At the same time, physical properties of these materials are less exactly related to 6 because of the more complicated phase compositions of the corresponding systems. The electrochemical treatment of Bi-Pb cuprates in nitrate melts [297] makes it possible to vary 8 within the region of 0.1. 

For some water reuse applications, activated carbon may be employed to adsorb 90 to 98% of any residual degradation-resistant organics when necessary. The resultant effluent quality is adequate for many industrial coolant or irrigation applications. After minimal further treatment, such as by reaeration and chlorination, it could even be reused for potable purposes in an emergency [55]. However, not enough is known about the potential for accumulation of trace toxins to recommend this procedure for long-term potable water use. 

Cellulose. A degradation-resistant polysaccharide composed of glucose subunits which is the major structural component of the cell walls of plants, accounting for more than 50% of the organic carbon in the biosphere. 

Hemicelluiose. A degradation-resistant polymer of the sugar D-xylose, with side chains of other sugars. Hemicelluiose is related structurally to cellulose by its similar linkage between the sugar subunits, but is somewhat less resistant to degradation than cellulose. 

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