The thermal degradation of the biodegradable bacterial polyesters poly(3-hydroxybutyrate), PHB, and poly(3-hydroxybutyrate-co-3-hydroxyvalerate), PHB/V produces a macromer, especially a 1000-6000 g/mol macromolecule, which contains an unsaturated end group as well as a carboxylic acid end group. The macromers may be polymerized to produce homopolymers and copolymers for different applications in which amphiphilic and biocompatible properties are required, for example, drug delivery systems.

A degradação térmica dos poliésteres bacterianos biodegradable poly(3-hydroxybutyrate), PHB, e poly(3-hydroxybutyrate-poly(3-hydroxybutyrate-co-3-hydroxyvalerate)-3-hydroxyvalerate), PHB/V produz um macromer, especial um macromolecule de 1000-6000 g/mol, que contenha um grupo unsaturated da extremidade as.well.as um grupo da extremidade do ácido carboxylic. Os macromers podem ser polimerizados para produzir homopolymers e copolymers para as aplicações diferentes em que as propriedades amphiphilic e biocompatible são requeridas, para o exemplo, sistemas da entrega da droga.