Bond degradation

Using exposure to higher temperature to accelerate bond degradation has been studied in detail by Gillespie and coworkers during the last 10 years. Most recently (48), effect of dry heat was compared to earlier work with wet heat. They concluded that the Arrhenius model does describe the degradation of the bonds,... 

This process uses light irradiation of wavelengths lower than the UV-C, i.e., lower than 190 nm. Generally, Xe excimer lamps (Xexc = 172 nm) are used. The excitation leads, in the majority of the cases, to the homolytic breakage of chemical bonds, degrading OM in condensed and gaseous phases (for example, fluorinated and chlorinated hydrocarbons) [1,3]. However, its application is limited, and the most important use of VUV radiation is in water photolysis (Eq. 8) ... 

Polyanhydride Nanoparticles Polyanhydrides have been more commonly used to prepare microparticles than nanoparticles. However, the technology is adaptable for nanoparticles. The transfection efficiency of firefly luciferase DNA was enhanced when delivered in nanoparticles prepared from polyanhydride-lactic acid blends, demonstrating the potential application in gene delivery [120], The degradation and elimination of polyanhydrides have been reviewed [97], In vivo, the anhydride bond degrades to form diacid monomers that are eliminated from the body. 

In order to provide the required flame retardancy to the molding compound, an encapsulated formulation usually contains brominated resins and antimony oxide. The brominated resins used in the encapsulated formulation are mainly tetrabromobisphenol A (TBBA) based epoxy resin or brominated epoxy novolac. These bromine-containing additives were reported to cause bond degradation at high temperature through accelerated void formation in the gold-aluminum intermetallic phases (1-4). 

Table, iv Effects of Ion Trapping Agents on Wire- Bond Degradation... 

Yang, C.Y., Wang, B.C., Chang, E., and Wu, J.D. (1995b) Bond degradation at the plasma-sprayed HA coating/Ti-6Al-4V alloy interface an in vitro study. /. Mater. 

A detailed study on the influence of fast secondary electrons from a 200 keV incident electron beam on the characteristic 7 eV tt-tt peak in PS was carried out using EELS with STEM. Siangchaew and Libera [100] found a relation between the 7r-bond degradation, the total radiation... 

As Azo bond degrades, the network becomes broken and swell. 

J. J. Chang, A study of bond degradation of rebar due to cathodic protection current . Cement and Concrete Research, 2002, 32,... 

Internal reinforcement A study by Sen et al. (1998) conducted over a 45-month period indicated that bond degradation adversely affected the ultimate capacity of AFRP-reinforced pretensioned piles driven in tidal waters, whereas the CFRP-reinforced piles were largely unaffected. 

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