Molecular dynamics simulation of functionalized nanofibrillar cellulose

Y. Sonavane, Antti Paajanen, Jukka Ketoja, S. Paavilainen, T. Maloney

Research output: Contribution to conferenceConference AbstractScientific

Abstract

An atomistic model of carboxylated nanocellulose fibril is formed and simulated using all-atom molecular dynamics. The major research is on a modification method, TEMPO-catalyzed oxidation, which introduces specific carboxyl functional groups on the surface of nanocellulose structures using MD simulation. Extent of functionalization for COO-NA has been done with respect to number of functional groups available after oxidation reaction. Energy minimization at constant pressure and temperature for longer time scales gives more relaxed fibril structure. The structure of the fibril undergoes significant twisting related to reorganization of the chains within its structure. The radial mean square distance analysis indicates total convergence of the structure towards an equilibrium state. Similarly, radial distribution of functionalized groups with respect to time represents sound and stable attachment of the groups to fibril chains. This structure can be used for the further molecular dynamic studies.

Conference

ConferenceInternational Parallel Conferences on Researches in Industrial & Applied Sciences, IARIAS April 2014, 25 - 26 April 2014, Dubai, United Arab Emirates
Period1/01/14 → …

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Keywords

  • molecular dynamics
  • microfibrillated cellulose
  • nanofibrillated cellulose
  • functionalization
  • root mean square distance
  • radial distribution function

Cite this

Sonavane, Y., Paajanen, A., Ketoja, J., Paavilainen, S., & Maloney, T. (2014). Molecular dynamics simulation of functionalized nanofibrillar cellulose. Abstract from International Parallel Conferences on Researches in Industrial & Applied Sciences, IARIAS April 2014, 25 - 26 April 2014, Dubai, United Arab Emirates, .