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

机译:通过耦合扫描电子显微镜和原子力显微镜对电纺明胶-壳聚糖纳米纤维的定量表征

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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 Derja-guin-Miiller-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.
机译:从明胶和壳聚糖以不同的质量比(明胶/壳聚糖:0 / 100,25 / 75,50 / 50,75 / 25,100 / 0)电纺纳米纤维。本研究利用原子力显微镜(AFM)和扫描电子显微镜(SEM)来评估明胶-壳聚糖纳米纤维的形态和力学性能。 SEM图像表明,电纺明胶-壳聚糖纳米纤维比纯明胶或壳聚糖纳米纤维具有更均匀的形态。此外,AFM-HarmoniX模式用于定量评估明胶-壳聚糖纳米纤维的Derja-guin-Miiller-Toporov(DMT)模量。经过两个校正因子的修正后,明胶-壳聚糖纳米纤维的DMT模量比纯明胶或壳聚糖纳米纤维的DMT模量更高,表明电纺明胶-壳聚糖纳米纤维内部存在分子间相互作用。

著录项

  • 来源
    《Materials Letters》 |2012年第2012期|p.14-17|共4页
  • 作者

    Shilu Wang; Guoming Zhao;

  • 作者单位

    Qingdao Institute ofBioenergy and Biopwcess Technology, Chinese Academy of Sciences, Qingdao 266101, China,Graduate University of Chinese Academy of Sciences, Beijing 100049, China;

    Qingdao Institute ofBioenergy and Biopwcess Technology, Chinese Academy of Sciences, Qingdao 266101, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    electrospinning; gelatin-chitosan nanofibers; atomic force microscopy; harmonix; elastic properties; DMT modulus;

    机译:电纺;明胶-壳聚糖纳米纤维;原子力显微镜谐音弹性DMT模量;

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