کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
626904 1455456 2008 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fabrication and characterization of chondroitin sulfate-modified chitosan membranes for biomedical applications
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تصفیه و جداسازی
پیش نمایش صفحه اول مقاله
Fabrication and characterization of chondroitin sulfate-modified chitosan membranes for biomedical applications
چکیده انگلیسی

Chitosan (CH) is a biomaterial with antiseptic, bioactive, and biocompatible properties. To further enhance the performance of chitosan membranes, chondroitin sulfate (CS) was utilized to modify the porous chitosan membranes fabricated by the freeze-gelation method. The cross-linking of CS to CH was mediated by ionic interaction and covalent cross-linking using EDC/NHS coupling reagents. The pore structures, mechanical properties, and surface hydrophilicity of the porous chondroitin sulfate-modified chitosan (CH/CS) membranes could be altered by varying the weight ratio of CS to CH. The membranes had interconnected stratiform pore structure with surface pore size ranging from 10 to 40 µm. Among various CH/CS membranes the one with the weight ratio of 90/10 (CH to CS) possessed the highest mechanical strength (18.61 N/g), about 40% increase as compared with the unmodified CH membrane. The addition of CS improved the hydrophilicity of the membranes. Preliminary cell culture experiments revealed that the proliferation of the gingival fibroblasts on the CH/CS surface was slightly better than that on the CH surface. In summary, the CH/CS membranes (especially the 90/10 membrane), due to their higher mechanical strength, hydrophilicity, and better cell compatibility, are promising biomaterials for tissue engineering applications.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Desalination - Volume 234, Issues 1–3, 31 December 2008, Pages 166-174