Facile chemo-refining approach for production of micro-nanofibrillated cellulose from bleached mixed hardwood pulp to improve paper quality. (15th June 2020)

• Record Type: Journal Article
• Authors: Kumar, Varun; Pathak, Puneet; Bhardwaj, Nishi K.
• Is Part Of: Carbohydrate polymers. Volume 238(2020)
• Publication Date: 2020-06-15
• Subjects: Micro-nanofibrillated cellulose -- Chemo-refining approach -- Bleached mixed hardwood pulp -- Strength and surface properties -- Drainability; Polysaccharides -- Periodicals; Polysaccharides -- Periodicals; Polysaccharides -- Périodiques; Electronic journals; 547.78
• DOI: 10.1016/j.carbpol.2020.116186
• Languages: English
• ISSNs: 0144-8617

Abstract

Highlights: MNFC preparation by chemo-refining route - potential to implement in paper industry. Pretreatment with sodium meta-periodate and sodium chlorite followed by refining. Nano and micro range fibres with improved WRV and carboxylic content. Improved paper properties after MNFC addition without lowering pulp drainability. Abstract: Micro-nanofibrillated cellulose was prepared using bleached mixed hardwood pulp by a low energy consuming chemo-refining approach having potential to be implemented easily in paper industry. Bleached mixed hardwood pulp was pretreated with sodium meta-periodate and sodium chlorite and micro-nanofibrillated by using refining in Valley beater. Scanning electron microscopy images of prepared micro-nanofibrillated cellulose showed 87 % fibre distribution in nano range, 4.47 ± 0.5 g/g water retention value and 2.13 ± 0.1 meq/100 g carboxyl content. Carboxylation effect of given chemical pretreatment was further confirmed by FTIR analysis. Paper handsheets, having bleached mixed hardwood pulp and prepared micro-nano-fibrillated cellulose, resulted in about 5% lower bulk with 27 %, 32 % and 87 % higher breaking length, burst factor and double fold, respectively than control (without nano-fibrillated cellulose). Prepared micro-nanofibrillated cellulose addition didn't show negative effect on pulp drainability (33 °SR). This work showed that micro-nanofibrillated cellulose might also be prepared using conventional routes of paper industry to improve paper properties.