Method for improving flocculation in drying process of micro/nano cellulose

• Main Authors: WANG PING, ZENG JINGSONG, LIU HEFANG, TU QIYUAN, XU JUN, GAO WENHUA, WANG BIN
• Format: Patent
• Language: Chinese; English
• Published: 18.02.2022
• Subjects: AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G; CHEMISTRY; COMPOSITIONS BASED THEREON; COMPOSITIONS OF MACROMOLECULAR COMPOUNDS; GENERAL PROCESSES OF COMPOUNDING; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; WORKING-UP

The invention discloses a method for improving flocculation in the drying process of micro/nano cellulose, and belongs to the field of micro/nano cellulose drying. The method comprises the steps of adding lignosulfonate into a micro/nano cellulose suspension, and uniformly mixing to obtain a mixed suspension; and freezing the mixed suspension, and then drying. According to the method disclosed by the invention, the dried micro/nano cellulose is mechanically dispersed, so that a relatively stable micro/nano cellulose suspension can be obtained. The method provided by the invention can effectively reduce the storage and transportation cost of the low-concentration micro/nano cellulose, and provides support for industrial production and application of the micro/nano cellulose. 本发明公开了一种改善微/纳米纤维素干燥过程中絮聚的方法，属于微/纳米纤维素干燥领域。该方法包括如下步骤：将木质素磺酸盐加入微/纳米纤维素悬浮液中，混合均匀，得混合悬浮液；再冷冻所述混合悬浮液，然后干燥。本发明方法干燥后的微/纳米纤维素再经过机械分散，可获得较稳定的微/纳米纤维素悬浮液。本发明的方法可有效降低低浓度微/纳纤维素储存、运输成本，为微/纳米纤维素的工业化生产和应用提供支持。