Optimization of Hemp Bast Microfiber Production Using Response Surface Modelling

Non-wood biomass is particularly attractive as a cellulose source because of the lower lignin content. However, optimal extraction conditions are required content varies between plant sources. Further, use organic acids in place harsh mineral interest “greening” production process. This study sought to establish optimum parameters for microfibers (CMFs) from hemp (Cannabis sativa) biomass, using maleic and formic acids. Hemp fibers were pre-treated NaOH (4 wt%) aqueous chlorite acetate buffer before ultrasonic treatment break down bundles. The CMFs produced compared with those generated sulfuric acid hydrolysis. Response surface methodology (RSM) was used determine combinations three processing conditions, including concentration (45–64%), hydrolysis time (30–90 min), temperature (45–65 °C). A central composite design (RSM-CCD) model 21 experimental runs optimized MODDE 13.1 software. suitably described data (R2 = 0.99; R2adj 0.96). Microfibers an average width 6.91 µm, crystallinity range 40–75%, good thermal stability produced. Crystallinity influenced by all factors. predicted 83.21%, which could be achieved 62 wt% acid, 36 min time, 47 °C temperature. These resulted degree 82%. suggest can alternative synthesis biodegradable waste fibers.