Quantitation of buried contamination by use of solvents
Experiments directed at determining the potential of reclaimed silicone polymers for reuse are described.
Pappas, S. P.↗
Engineering topics
Hsiao, Y. C.
Publications and source records attributed to Hsiao, Y. C..
Solubilization and spore recovery from silicone polymers
A non-sporicidal technique for solvent degradation of cured silicone polymers was developed which involves chemical degradation of cured silicone polymers by amine solvents at room temperature. Substantial improvements were obtained in the recovery of seeded spores from room temperature cured polymers as compared to the standard recovery procedures, which indicates that the curing process is not sufficiently exothermic to reduce spore viability. The dissolution reaction of cured silicone polymers whith amine solvents is proposed to occur by bimolecular nucleophilic displacement. The chemical structure of silicone polymers was determined by spectroscopic methods. The phenyl to methyl ratio, R/Si ratio, molecular weight, and hydroxyl content of the silicone resins were determined.
Hsiao, Y. C.↗
Quantitation of buried contamination by use of solvents
Spore recovery form cured silicone potting compounds using amine solvents to degrade the cured polymers was investigated. A complete list of solvents and a description of the effect of each on two different silicone polymers is provided.
Pappas, S. P.↗