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N. Tudorachi, A. P. Chiriac

Biodegradable copolymers with succinimide and lactic acid units.

Part II. Kinetics of thermodegradation, thermal characteristics

and zeta potential of the product (in English)

Polimery 2011, No 4, 302

DOI: dx.doi.org/10.14314/polimery.2011.302

Summary

Biodegradable copolymers based on succinimide and lactic acid units prepared by two synthesis routes (variants A and B described in Part I, see [11]) were characterized. Variant A consists in the in situ copolymer synthesis using maleic anhydride, ammonium hydroxide and L(+)-lactic acid and accordingly variant B previously prepared poly(succinimide) is modificated be means of L(+)-lactic acid by mass polycondensation procedure. A comparison of thermodegradation kinetics (TG, DTG), thermal properties (DSC, DTG) and zeta potential was compared for the products obtained through both procedures. Differences in the thermal properties of the copolymers — especially in the glass transition temperatures — were observed.

Key words: poly(succinimide-co-lactic acid), thermodegradation, thermal properties, zeta potential, electrical conductivity

e-mail: achiriac1@yahoo.com

N. Tudorachi, A. P. Chiriac (290.7 KB): Biodegradable copolymers with succinimide and lactic acid units (in English). Part II. Kinetics of thermodegradation, thermal characteristics and zeta potential of the product