Chlorination of Poly(3-hydroxy alkanoates) Containing Unsaturated Side Chains

Unsaturated biopolyesters, (PHA−DB), obtained from pure anchovy (hamci), hazelnut, soybean oily acids and the mixtures of octanoic acid (in weight ratios of 50/50 and 70/30) were chlorinated up to 54 wt % Cl content. The molecular weights (MW) of the chlorinated biopolyesters were between 1.3 × 104 and 3.0 × 104 and decreased with the increase in chlorine content in PHA−DB. Melting transitions of the chlorinated biopolyesters were between 62 and 125 °C depending on the chlorine content when compared with those of the original PHAs, 44−55 °C.