Journal
JOURNAL OF POLYMER RESEARCH
Volume 18, Issue 6, Pages 1239-1247Publisher
SPRINGER
DOI: 10.1007/s10965-010-9526-x
Keywords
Bio-based monomers; Polycondensation; Biodegradable polyester; Photoreactivity
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Funding
- National Natural Science Foundation [20876070]
- Fundamental Research Funds for the Central Universities [JUSRP10906, JUSRP31001]
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Biodegradable poly{3,4-dihydroxycinnamic acid (DHCA, coffeic acid)-co-lithocholic acid (LCA)} polyester was synthesized by polycondensation of DHCA and LCA. The molecular structure of poly(DHCA-co-LCA) copolymers was characterized by FT-IR and H-1-NMR measurement. The photo-crosslinkability of poly(DHCA-co-LCA) depended on their compositions and could be tuned by varying the monomer ratio. The presence of LCA in the copolymers enhanced the solubility and thermal stability. In addition, poly(DHCA-co-LCA) and PDHCA exhibited higher fluorescence emission intensity than DHCA monomer. Accelerated hydrolysis experiments revealed that the degradation rate of poly(DHCA-co-LCA) was slower than that of PDHCA.
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