Synthesis, characterization and cytotoxicity of TMC-graft-poly(vinyl alcohol) copolymers

被引:17
作者
Martins, Alessandro F. [1 ]
Bueno, Pedro V. A. [1 ]
Follmann, Heveline D. M. [1 ,2 ]
Nocchi, Samara R. [2 ]
Nakamura, Celso V. [2 ]
Rubira, Adley F. [1 ]
Muniz, Edvani C. [1 ]
机构
[1] Univ Estadual Maringa, Dept Quim, GMPC, BR-87020900 Maringa, Parana, Brazil
[2] Univ Estadual Maringa, Lab Inovacao Tecnol Desenvolvimento Farmacos & Co, BR-87020900 Maringa, Parana, Brazil
关键词
Chitosan; N-trimethyl chitosan; Poly(vinyl alcohol); Copolymers; Graft; TRIMETHYL CHITOSAN CHLORIDE; POLY(VINYL ALCOHOL); DRUG-DELIVERY; N; N-TRIMETHYL CHITOSAN; BLOCK-COPOLYMERS; IN-VITRO; QUATERNIZATION; DERIVATIVES; COMPLEXES; HYDROGELS;
D O I
10.1016/j.carres.2012.11.014
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
N-trimethyl chitosan-graft-poly(vinyl alcohol) (TMC-g-PVA) copolymers were prepared. The grafting reactions were conducted in water changing the feed ratios of poly(vinyl alcohol)/6-O-succinate-N-trimethyl chitosan (PVA/STMC). The structure of TMC-g-PVA copolymers was characterized through H-1 NMR spectroscopy, thermogravimetric analysis (TGA/DTG), wide-angle X-ray scattering (WAXS) and scanning electron microscopy (SEM). The quaternization degree (DQ) and substitution degree (DS) of N-trimethyl chitosan (TMC) and 6-O-succinate-N-trimethyl chitosan (STMC) were determined by H-1 NMR, being the spectroscopy 14.0 and 5.5 mol-% found, respectively. The viability of HCT-116 cancerous cells was investigated at different concentrations. The effect of PVA/STMC ratios on the cytotoxicity of the TMC-g-PVA copolymers was examined and the CC50 values determined for every case. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码:153 / 160
页数:8
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