生物酶改善溶解浆性能的研究进展

Progress in improving the properties of dissolving pulp by enzymes

摘要:

溶解浆由高纯度纤维素组成，用于制造再生纤维素纤维、纤维素酯、纤维素醚等材料。溶解浆性能的好坏对后续产品的生产和加工性能有着很大的影响，其中α-纤维素含量、半纤维素含量、浆粕粘度、灰分、过渡金属离子含量、纤维的物理形态、纤维素分子量分布以及溶解浆的反应性能是其重要的性能指标。生物酶因其绿色、温和、高效的特点，在改善溶解浆性能方面有很好的应用前景，并进行了大量的研究。文中介绍了溶解浆的主要性能指标和改善溶解浆性能的生物酶，重点介绍了纤维素酶和木聚糖酶在改善溶解浆性能方面的应用和研究进展，指出了生物酶改善溶解浆性能目前存在的主要问题，提出了该领域的主要研究方向，并对生物酶处理改善溶解浆性能的技术进行了展望。

Abstract:

Dissolving pulp consists of high purity cellulose and is widely used to as raw materials for the production of regenerated cellulose fiber, cellulose ester and cellulose ether. The characteristic of dissolving pulp affects greatly the production and processing performance of subsequent products. The α-cellulose content, hemicellulose content, pulp viscosity, ash, transition metal ion content, fiber morphology, molecular weight distribution of cellulose and the reactivity are the important properties. Because of its green, mild and high efficiency, the application of enzymes in improving the properties of dissolving pulp has a promising application prospect and has been researched significantly. In this review, the main properties of dissolving pulp are presented first, followed by a recommendation of the enzymes to improve these properties. The application and current research of cellulase and xylanase in improving the properties of dissolving pulp are emphasized. The main problems and the future research areas in improving the properties of dissolving pulp by enzymes are revealed. Finally, the technology prospects in this field are proposed.