FBRM as a tool to monitor cellulose regeneration

Description

cellulose regeneration was monitored on real time by using a focused beam reflectance measurements (FBRM) under different conditions. Effect of aging, concentration and temperature was studied.

Steps to reproduce

cellulose regeneration was monitored by means of a FBRM with a G400L probe supplied by Mettler Toledo, US. The principle of the measurement and the details of the applied methodology have been described in Blanco et al, (2002, 2005). The measurement interval of the probe was set from 0.5 µm to 1 mm. 50 mL of the cellulose solution was disposed in a vessel with a magnetic stirrer. The vessel was placed in a preheated water bath and covered with aluminum foil to minimize losses of solvent by evaporation. The FBRM and temperature probes were immediately submerged into the solution, and monitoring was performed under stirring at 750 rpm. Chord length distribution was registered each minute by the FBRM probe. Different statistics were determined from each chord length distribution, such as mean cord length, total counts per second and counts per second in different length intervals. Part of the solid cellulose obtained were cleaned with distillate water and kept for acting as a seed for seeding trials.

Institutions

Categories

Funding

Licence