Direct determination of the degree of fibrillation of wood pulps by distribution analysis of pixel-resolved optical retardation

We propose a new methodology for direct evaluation of the degree fibrillation fibrillating pulp suspensions through pixel-resolved retardation distribution. Through simple normalization by just injecting suspension with certain concentration into quartz flow channel constant cross-sectional shape, (i.e., bundling cellulose molecular chains) can be directly mapped gradation, reflecting locally high (pulp fibers), smaller (balloons on pulps), and much close to water (dispersed nanofibers). Both average standard deviation are found indicators fibrillation. envision that proposed will become future determining distribution, it pave way more precise control sophisticated applications nanofiber suspensions.