Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510640, China; Guangdong Provincial Key Laboratory of Plant Resources Biorefinery, Guangzhou 510006, China.
Plant Fiber Material Science Research Center, State Key Laboratory of Pulp and Paper Engineering, School of Light Industry and Engineering, South China University of Technology, Guangzhou 510640, China.
Int J Biol Macromol. 2023 Aug 1;245:125395. doi: 10.1016/j.ijbiomac.2023.125395. Epub 2023 Jun 16.
This work proposed a promising biorefinery method for the deconstruction of moso bamboo by using p-toluenesulfonic acid (P-TsOH) pretreatment to product high-purity cellulose (dissolving pulp). The cellulose pulp with high α-cellulose content (82.36 %) was successfully prepared for 60 min at low pretreatment temperature (90 °C) and atmospheric pressure. After the simple bleaching and cold caustic extraction (CCE) processes, the properties of cellulose pulp, such as α-cellulose content, polymerization, ISO brightness, all met the standard of dissolving pulp. In general, the cooking method through P-TsOH pretreatment can shorten the preparation time, which can effectively reduce energy consumption and chemical consumption. Therefore, this work may provide a new perspective for the green preparation of dissolving pulp that can be used to produce lyocell fiber after ash and metal ion treatment.
本工作提出了一种有前景的生物炼制方法，通过对毛竹进行对甲苯磺酸（P-TsOH）预处理来制备高纯度纤维素（溶解浆）。在低预处理温度（90°C）和常压下，仅需 60 分钟即可成功制备出具有高α-纤维素含量（82.36%）的纤维素浆。经过简单的漂白和冷碱抽提（CCE）工艺后，纤维素浆的性质，如α-纤维素含量、聚合度、ISO 白度等，均符合溶解浆的标准。总的来说，通过 P-TsOH 预处理的蒸煮方法可以缩短制备时间，有效降低能源和化学物质的消耗。因此，这项工作可能为绿色制备溶解浆提供了一个新视角，经过灰分和金属离子处理后可用于生产莱赛尔纤维。
