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

页码：14 / 17

页数：4

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