Enhancement of cellulose dissolution in water-based solvent via ethanol-hydrochloric acid pretreatment

摘要: Cellulose dissolution in water-based solvents is essential for processing of regenerated cellulose products such as fibres, films and particles. NaOH–urea aqueous solution has emerged a simple attractive alternative solutions. However, this solvent requires energy intensive pretreatments milling or refining. In paper we investigate one step chemical pretreatment method using ethanol–hydrochloric acid prior to the NaOH–urea–water. The mechanism pretreated sample was initially examined diluted cupri-ethylenediamine 7% NaOH–12% urea–water optical microscopy methods field emission scanning electron microscopy. apparent activation viscous flow ethanol–acid pulp NaOH–urea–water calculated rheological methods. Our results showed that achieved up 4% concentration. We suggest enhancement due combination degradation remnant primary fibre wall layer reduction degree polymerization cellulose.