|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Biological Materials Science
||The Effect Moisture Content on Mechanical Properties of Lignin and Hemicellulose
||Sina Youssefian, Nima Rahbar
|On-Site Speaker (Planned)
Here, we have utilized atomistic simulations to investigate the mechanical properties and mechanisms of interactions between hemicellulose, LCC and lignin, in the presence of water molecules. Our results suggest that hemicellulose exhibits better mechanical properties and lignin shows greater tendency to adhere to cellulose nanofibrils. Consequently, the role of hemicellulose found to be enhancing the mechanical properties and lignin found to be providing the strength of bamboo fibers. The abundance of Hbonds in hemicellulose chains is responsible for improving the mechanical behavior of LCC. The strong van der Waals forces between lignin molecules and cellulose nanofibrils are responsible for higher adhesion energy between LCC/cellulose nanofibrils. The amorphous regions of cellulose nanofibrils is the weakest interface in bamboo Microfibrils. In presence of water, the elastic modulus of lignin increases at low water content (less than 10% ) and decreases in higher water content, whereas the hemicellulose elastic modulus constantly decreases.
||Planned: Supplemental Proceedings volume