CAI Qing, BEI Jianzhong, WANG Shenguo. STUDY ON A COMB-LIKE COPOLYMER DERIVED FROM DEXTRAN AND L-LACTIDE:SYNTHESIS AND DEGRADATION[J]. Acta Polymerica Sinica, 2004,(5):719-725.
CAI Qing, BEI Jianzhong, WANG Shenguo. STUDY ON A COMB-LIKE COPOLYMER DERIVED FROM DEXTRAN AND L-LACTIDE:SYNTHESIS AND DEGRADATION[J]. Acta Polymerica Sinica, 2004,(5):719-725.DOI:
Comb-like biodegradable polylactide-grafted dextran copolymer (Dextran-g-PLA) was synthesized in a bulk lactide polymerization reaction using dextran derivative as macroinitiator and stannous octoate as catalyst.The Dextran-g-PLA copolymers were characterized by 1H-NMR
GPC and intrinsic viscosity measurements
and their molecular architecture was confirmed as PLA segments attached to dextran backbones.Compared to pure PLA
the copolymers showed higher hydrophilicity and faster degradation rate due to the incorporation of hydrophilic glucose units and comb-like structure
which resulted in shortened PLA chain length. This Dextran-g-PLA copolymer was envisioned having good cell affinity and being a good candidate as cell scaffold materials for tissue engineering applications.