Author(s):
1. Milica Balaban, Prirodno-matematički fakultet Banja Luka, Republic of Srpska, Bosnia and Herzegovina
2. N. Sladojević, Prirodno-matematički fakultet Banja Luka, Republic of Srpska, Bosnia and Herzegovina
3. Vesna Antić, Univerzitet u Beogradu, Poljoprivredni fakultet, Serbia

Abstract:
The synthesis, structure and composition of triblock poly(ester-siloxane-ester) copolymers, PLLA-PDMS-PLLA, based on α,ω–diaminopropyl-poly(dimethylsiloxane) (PDMS) and L-lactide were studied in this work. The samples of the controlled block length were synthesized by ring-open polymerization of L-lactide in the presence of tin-octoate, Sn(Oct)2 as a catalyst and aminopropyl-terminated siloxane prepolymer as a macroinitiator in a concentrated toluene solution. Influence of the temperature and concentration of the catalyst on the structure, composition and size of the copolymers were investigated by 1H and 13C NMR spectroscopy and dilute solution viscometry.

Key words:
triblock copolymer, poly(ester-siloxane-ester), L-lactide, 1H NMR spectroscopy

Thematic field:
SYMPOSIUM A - Science of matter, condensed matter and physics of solid states

Date of abstract submission:
30.06.2016.

Conference:
Contemporary Materials 2016 - Savremeni Materijali

Abstract