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Journal of Bioactive and Compatible Polymers
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New Biodegradable Polymers from Renewable Sources – Segmented Copolyesters of Poly(1,3-Propanediol Succinate) and Poly(Ethylene Glycol)

Yan Liu

Elisabetta Ranucci

Margaretha Söderqvist Lindblad

Ann-Christine Albertsson

Department of Polymer Technology, Royal Institute of Technology, Stockholm SE-10044 Sweden

New high-molecular-weight hydrophobic/hydrophilic segmented copolymers of poly(ester-ether-carbonate) structure, containing poly(1,3-propylene succinate) (SP) and poly(ethylene glycol) (PEG) segments in the main chain, were synthesized and characterized. These copolymers were obtained by a two-step chain-extension reaction performed by the thermal polycondensation of {alpha}{omega}-dihydroxy-oligo(1,3-propylene succinate) with PEG1000 and PEG2000, respectively. The molecular structure of all the synthesized materials was characterized by 1H-NMR, by SEC for molecular weights, and by DSC for thermal properties. The molecular characterizations were in agreement with the proposed structures. Solubility and swellability tests indicated that the introduction of hydrophilic PEG segments into the high molecular weight poly(1,3-propylene succinate)s imparted amphiphilic character to the new materials. This is expected to influence the biocompatibility and biodegradability of these materials. The new polymers, besides having a degradable backbone, were derived from the monomers, 1,3-propanediol and succinic acid, which are both obtainable from renewable sources. Therefore, they have a potential as environmental friendly materials.

Journal of Bioactive and Compatible Polymers, Vol. 17, No. 3, 209-219 (2002)
DOI: 10.1106/088391102026318
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