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Organotin compounds as PVC stabilizers
When poly(vinyl chloride) is fabricated, it passes between rollers (calendars) at about 200 ◦C, which causes elimination of some HCl at allylic defects in the polymer, as shown below (Figure 3.3.1). Furthermore, the released ...
Water vapour sorption and humidity - a survey on measuring methods and standards
(Nova Science Publishers, 2011)
Under environmental conditions water exists in all three classical states of matter: solid, liquid and gas. The water molecule is non-linear and therefore polar. In comparison with other liq-uids water has anomalous features; ...
Controlled release of drugs from tablet coatings
Controlled - release technology for drug delivery applications is designed to target the drug to particular places or cells in the body, to overcome certain tissue and cellular barriers, and to control the duration and ...