Green Processes Research Centre and Chemical Engineering Department, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B5E1, Canada.
Green Processes Research Centre and Chemical Engineering Department, Lakehead University, 955 Oliver Road, Thunder Bay, ON P7B5E1, Canada.
Bioresour Technol. 2021 Jun;329:124891. doi: 10.1016/j.biortech.2021.124891. Epub 2021 Feb 24.
The aim of this work was to study the production and characterization of tall oil lignin (TOL) from tall oil soap (TOS) of the kraft pulping process following a new process (i.e., LignoTall). Also, the properties of the TOL and kraft lignin (KL) produced via LignoForce technology were compared. Although TOL and KL were generated from the same black liquor and softwood species, they had remarkably different characteristics, confirming the impact of the production methods on the physicochemical properties of the isolated lignin. TOL had higher molecular weight, O/C elemental ratio, sulfur content, and carboxylate-OH content but lower methoxy group content than did KL. The high sulfur group content (7.3%) of TOL can be very useful for the vulcanization process. Moreover, the high carboxylate-OH content of TOL (0.56 mmol/g) is desirable for its utilization in epoxy resin production.
本工作旨在研究硫酸盐法制浆工艺中的妥尔油皂（TOS）经新型工艺（即 LignoTall 工艺）生产并进行特性分析。同时，对 LignoForce 工艺生产的妥尔油木质素（TOL）和 kraft 木质素（KL）的性能进行了比较。尽管 TOL 和 KL 均来源于相同的黑液和软木物种，但它们具有明显不同的特性，这证实了生产方法对分离木质素的物理化学性质的影响。TOL 的分子量、O/C 元素比、硫含量和羧酸-OH 含量较高，甲氧基含量较低，而 KL 则相反。TOL 中高含量的硫基团（7.3%）对于硫化过程非常有用。此外，TOL 中高含量的羧酸-OH（0.56 mmol/g）对于其在环氧树脂生产中的应用是理想的。
