Simulation poly degradation

Boussoum, M. O. Atek, D. Belhaneche-Bensemra, N. Interactions between poly(viny 1 chloride) stabilised with epoxidised sunflower oil and food simulants. Polymer Degradation and Stability, 2006,91, 579-584. 

Kamitakahara, M., Kawashita, M., Miyata, N., Kokubo, T. and Nakamura, T. (2004) Degradation of bioactive polydimethylxiloxane- CaO-SiOj-TiOj and poly(tetramethylene oxide)-CaO-Ti02 hybrids in a simulated body fluid. Journal of the American Ceramic Society, 87, 235-239. 

To test and optimise the coupled reaction, RNA hydrolysis was simulated by the addition of AMP as a preformed product to a complete nucleic acid amplifrcation cocktail. Additions of AMP gave linear bioluminescent responses over a range of concentrations from 0.1 to 10 /tmol/L AMP (Fig. 1). The ability to detect RNA-DNA heteroduplex hydrolysis with this assay was tested using a proprietary exonuclease degradation system. 5 -AMP released from the poly rA/oligo dT probertemplate heteroduplex was measured using the triple enzyme coupled... 

Examination of hydrolytic degradation of natural poly((i )-3-hydroxybu-tyrate) in vitro is a very important step for understanding of PHB biodegradation. There are several very profound and careful examinations of PHB hydrolysis that was carried out for 10-15 years [25-28], Hydrolytic degradation of PHB was usually examined under standard experimental conditions simulating internal body fluid in buffered solutions with pH = 7.4 at 37°C but at seldom cases, the higher temperature (55°C, 70°C, and more) and other values of pH (from 2 to 11) were selected. 

The Mato Bi samples made of starch and poly-e-caprolactone or cellulose derivatives were studied. Enzymatic degradation of Mater Bi samples was investigated by incubating the biomaterial in concentrated trypsin solution to simulate the in vitro interaction between the polymer and the degradative enzymes during the inflammatory response. 

Other Addition Polymers. There are few studies on other reported polymer and plastic components of landfills. Poly(vinyl chloride) seems to be inert in landfill showing no degradation in real-world tests (23,24) and laboratory simulations (25). In the latter study, plasticizer migration occinred with its subsequent biodegradation. 

Eldsatter C., Karlsson S, Albertsson A.-Ch. Effect of abiotic factors on the degradation of poly(3-hydroxybutyrate-cc -3-hydroxy valerate) in simulated and natural composting envirorunents, Polym. Deg. Stab. 64 (1999) 177. 

Watanabe M., Kawai E Numerical simulation for enzymatic degradation of poly(vinyl alcohol), Polym. Deg. Stab. 81 (2003) 393. 

Gu J-D, Gu J-G, Shi HC, li XY (2001b) Simulating anaerobic landfill conditions in bioreactors and testing polymer degradability using poly(P-hydroxybutyrate-co-16 % valerate) and cellulose acetetes (DS 1.7 and 2.5) Water Sci Technol... 

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