Upgrading Paper-Grade Pulp as Dissolving Pulp for Lyocell Fiber Preparation

Lyocell fiber has emerged as a new generation of green due to its preparation process and unique properties in comparison with viscose fiber. The raw material for the great impact on quality finished product. However, unlike viscose-grade dissolving pulp, there is no evaluation system Lyocell-grade making it difficult assess material. This study examined approach upgrade paper-grade pulp Under sequence caustic extraction, acid treatment, enzymatic was prepared competitive compared commercial pulp. assessment also accomplished by characterizing properties, dissolution spinnability stability solution using sample. In addition, mechanism influencing factors were elucidated, providing theoretical basis upgrading production.