Cellulose Nanocrystals (CNC) PROCESS – STRUCTURE LINKAGE ACID HYDROLYSIS – PARTICLE MORPHOLOGY Presentation 1 Sezen YUCEL

Outline DESCRIPTION MOTIVATION PRODUCTION PROCESS PROCESS – STRUCTURE LINKAGE NEXT STEPS

CELLULOSE NANOCRYSTAL (CNC) SOURCED FROM BIOMASS ROD – SHAPED NANO PARTICLES HIGHLY CRYSTALLINE STRUCTURES SEM image from Cellulose Nanocrystal Reference Material Certificate, National Research Council Canada CNC photos from University of Maine – The Process Development Center

MOTIVATION – CNC PROPERTIES MATERIAL PROPERTIES*: Most abundant, bio-compatible, cheap Numerous applications However  lack of standardization/characterization * Table is taken from “Cellulose nanomaterials review: structure, properties and nanocomposites”, 2011

pRODUCTION Cellulose extraction from biomass (Mechanical and/or chemical pulping) Acid hydrolysis or oxidation CNC

Process Parameters Source Hydrolysis Conditions Bacteria, tunicate, wood Hydrolysis Conditions Acid, enzymatic, mechanical

Particle analysis Different stacking features: Individual particles (no intersection) Overlapping particles

Segmented image (after the pre-processing steps) Once we can clearly (without losing any information such as pixels at the end of a particle) classify all particles as white region and the background as black, then each object will be able to be detected automatically with its properties like location, size, area, …