The synthesis of biodegradable graft copolymer cellulose-graft-poly(L-lactide) and the study of its controlled drug release

被引：170

作者：

Dong, Haiqing ^{[1
]}

Xu, Qi ^{[1
]}

Li, Yongyong ^{[1
]}

Mo, Shaobo ^{[1
]}

Cai, Shaojun ^{[1
]}

Liu, Lijian ^{[1
]}

机构：

[1] Wuhan Univ, Minist Educ, Key Lab Biomed Polymers, Dept Polymer Sci,Coll Chem & Mol Sci, Wuhan 430072, Peoples R China

来源：

COLLOIDS AND SURFACES B-BIOINTERFACES | 2008年 / 66卷 / 01期

关键词：

biodegradable; controlled release; cellulose; graft copolymer; micelles;

D O I：

10.1016/j.colsurfb.2008.05.007

中图分类号：

Q6 [生物物理学];

学科分类号：

071011 [生物物理学];

摘要：

According to the concept of green chemistry and sustainable development, a new biodegradable copolymer comprised of hydrophobic poly(L-lactide) (PLLA) segments and hydrophilic cellulose segment (cellulose-g-PLLA) was designed and synthesized. The structure of the copolymer was characterized by H-1 NMR, FT-IR,C-13 NMR, DSC and WAXD. The cytotoxicity study shows that cellulose-g-PLLA exhibits good biocompatibility. The copolymer can self-assemble into micelles in water with the hydrophobic PLLA segments at the cores of micelles and the hydrophilic cellulose segments as the outer shells. Transmission electron microscopy (TEM) shows that the micelles exhibit nanospheric morphology within a size range of 30-80 nm. The drug loaded micelles formed by the copolymer in aqueous media show sustained drug release which indicates their potential applicability in drug carrier. (c) 2008 Elsevier B.V. All rights reserved.

引用

页码：26 / 33

页数：8

共 31 条

[1]

Nano-engineering block copolymer aggregates for drug delivery [J].