Affordable Access

Publisher Website

Supermolecular structure of cellulose/amylose blends prepared from aqueous NaOH solutions and effects of amylose on structural formation of cellulose from its solution

Authors
Journal
Carbohydrate Research
0008-6215
Publisher
Elsevier
Publication Date
Volume
346
Issue
6
Identifiers
DOI: 10.1016/j.carres.2011.01.037
Keywords
  • Regenerated Cellulose
  • Structural Formation Mechanism
  • Molecular Dynamics (Md) Simulation
  • Cellulose Blend
  • Initial Structure
  • Molecular Sheet

Abstract

Abstract We previously proposed a mechanism for the structural formation of cellulose from its solution using a molecular dynamics (MD) simulation and suggested that the initial structure from its solution plays a critical role in determining its final structure. Structural changes in the van der Waals-associated cellulose molecular sheet as the initial structure were examined by MD simulation; the molecular sheet was found to be disordered due to maltohexaoses as an amylose model in terms of the hydrogen bonding system of cellulose. The structure and properties of cellulose/amylose blends prepared from an aqueous NaOH solution were examined experimentally by wide-angle X-ray diffraction and dynamic viscoelasticity measurements. The crystallinity of cellulose in the cellulose/amylose blend films was lower than that of cellulose film. The diffraction peaks of the cellulose/amylose blends were slightly shifted; specifically, (11¯0) was shifted to a higher angle, and (110) and (020) were shifted to lower angles. These experimental results probably resulted from the disordered molecular sheet, as revealed by MD simulations.

There are no comments yet on this publication. Be the first to share your thoughts.