Quantitative characterization of the electrospun gelatin-chitosan nanofibers by coupling scanning electron microscopy and atomic force microscopy

被引：12
|
作者：
Wang, Shilu [1 ,2 ]
Zhao, Guoming [1 ]
机构：
[1] Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
[2] Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China
来源：
MATERIALS LETTERS | 2012年 / 79卷
基金：
中国国家自然科学基金;
关键词：
Electrospinning; Gelatin-chitosan nanofibers; Atomic force microscopy; HarmoniX; Elastic properties; DMT modulus; AMYLOID FIBRILS; SCAFFOLDS; COLLAGEN;
D O I：
10.1016/j.matlet.2012.03.044
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Nanofibers were electrospun from gelatin and chitosan at different mass ratios (gelatin/chitosan: 0/100, 25/75, 50/50, 75/25, 100/0). Atomic force microscopy (AFM) combined with scanning electron microscopy (SEM) was utilized in this study to evaluate the morphological and mechanical properties of the gelatin-chitosan nanofibers. The SEM images showed that the electrospun gelatin-chitosan nanofibers possessed more uniform morphologies than the pure gelatin or chitosan nanofibers. Moreover, AFM-HarmoniX mode was used to quantitatively assess the Denaguin-Muller-Toporov (DMT) modulus of gelatin-chitosan nanofibers. After modified by two correction factors, the DMT modulus of gelatin-chitosan nanofibers showed higher values than the pure gelatin or chitosan nanofibers, which indicated the existence of intermolecular interaction within the electrospun gelatin-chitosan nanofibers. (C) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码：14 / 17
页数：4
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