Abstract
The degradation of poly(3-hydroxybutyrate), P(3HB), was determined in two conditions namely, a non-aqueous condition of chloroform–methanol mixture in the presence of either one of the two following catalysts, 4-toluenesulphonic acid and imidazole, and secondly in an aqueous condition of increasing pH. From our study, a random chain scission of PHB occurred in the non-aqueous condition while the degradation of PHB in the presence of water occurred through surface hydrolysis with no change in the molecular weight. In the surface hydrolysis of the polymer, the rate was increased with higher pH values.
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