The effect of silicone treatment on the chemical durability of glass containers

JSGT 1958 V42 T211-T213

Untreated, sulphur-treated and silicone-treated bottles, after a preliminary washing routine, were filled with carbon dioxide free distilled water and heated in an autoclave at 15 lb/in. 2 pressure, for periods of 1, 2, 3, and 4 h. The degree of attack was estimated by the amount of acid neutralized by the alkali extracted in the containers. Results seem to indicate that there was a hindrance to the extraction of alkali in the silicone-treated containers, but this was not comparable to the initial effect of sulphur treatment. The aim of surface treatment of containers is to reduce surface damage and improve chemical durability or, in the special case of silicone treatment, to enable the whole of the contents to be removed without leaving a film of the contents on the surface of the bottle. These tests were carried out to learn if silicone films would give equivalent protection to sulphur treatment, to bottles of normal container glass composition. 15.00

G. H. Bryant