CICECO, Department of Chemistry, University of Aveiro, Campus Universitário de Santiago, 3810-193 Aveiro, Portugal.
CAIMA-Indústria de Celulose S.A., P-2250 Constância, Portugal.
Carbohydr Polym. 2021 Dec 1;273:118466. doi: 10.1016/j.carbpol.2021.118466. Epub 2021 Jul 22.
The increasing demand for cellulosic fibres is continuously driven by the growing earth population and requirements of the textile industry. The annual cotton production of ca. 25 million tons is no longer enough to meet the market demands. This market gap of cellulosic fibres is progressively filled by regenerated cellulosic fibres derived from the dissolving pulp. The conventional industrial process of viscose production is far from being environmentally friendly due to the use of hazardous reagents. Alternatively, new trends in the production of regenerated fibres are related to the direct dissolution of cellulose in appropriate environmentally sound recyclable solvents, allowing high quality rayon fibres. This article reviews the sources of dissolving pulps used for the production of viscose and its quality parameters related to the performance of viscose production. The prospective cellulose regeneration processes, both commercialized and under development, are reviewed regarding current and future developments in the area.
不断增长的人口和纺织工业的需求推动了对纤维素纤维的需求持续增长。每年约 2500 万吨的棉花产量已经不足以满足市场需求。纤维素纤维的市场缺口逐渐被溶解浆衍生的再生纤维素纤维填补。由于使用了危险试剂，传统的粘胶生产工艺远非环保。相反，再生纤维生产的新趋势与纤维素在适当的环保可回收溶剂中的直接溶解有关，从而生产出高质量的人造丝纤维。本文综述了用于生产粘胶的溶解浆的来源及其与粘胶生产性能相关的质量参数。综述了已经商业化和正在开发中的纤维素再生工艺，以及该领域的当前和未来发展。
