Fig. 2: Preparation of stereocontrolled CSS polyester copolymers.
From: Resorbable barrier polymers for flexible bioelectronics

C3A and CSS monomer precursor synthesis were carried out via Fischer esterification. After purification, a series of thiol-yne polymerizations were carried out with different stoichiometric ratios of the degradable CSS monomer and 1,10-decanedithiol (C10S) to vary the composition of the resulting copolymers. H2SO4 sulfuric acid, DBU 1,8-Diazabicyclo[5.4.0]undec-7-ene, CHCl3 HPLC-grade chloroform.