Introducing open films of nanosized cellulose - Atomic force microscopy and quantification of morphology

E. Kontturi, P. C. Thüne, A. Alexeev, J. W. Niemantsverdriet

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A method for preparing open, sub-monolayer cellulose films on a silicon substrate is introduced, and the open films were quantified using the three-dimensional information from atomic force microscopy (AFM) height images. The preparation method is based on spin coating low concentrations of trimethylsilyl cellulose (TMSC) on silicon and hydrolysing the TMSC to cellulose using a vapour phase acid hydrolysis. AFM showed that the surfaces consist of nanosized cellulose patches which are roughly 50-100 nm long, 20 nm wide, and 1 nm high. The volume of the cellulose patches was quantified. Examination of the cross section of the cellulose patches revealed that the exaggeration of the lateral dimensions by the AFM tip is small enough to account for a mere ±2% error in the volume quantification. Pilot experiments showed that the volume of the cellulose was largely restored in a wetting/drying cycle but the morphology changed considerably. Because of their small size, the cellulose patches provide a novel approach for interpretation on the molecular architecture of cellulose.

Original languageEnglish
Pages (from-to)3307-3317
Number of pages11
JournalPolymer
Volume46
Issue number10
DOIs
Publication statusPublished - Apr 25 2005

Keywords

  • Atomic force microscopy
  • Cellulose model surface
  • Open film

ASJC Scopus subject areas

  • Organic Chemistry
  • Polymers and Plastics
  • Materials Chemistry

Fingerprint Dive into the research topics of 'Introducing open films of nanosized cellulose - Atomic force microscopy and quantification of morphology'. Together they form a unique fingerprint.

  • Cite this