A cascade valorization of Kenaf stalk for the preparation of lignin sunscreens and papermaking.

Autor: Lyu Y; State Key Laboratory of Bio-based Materials and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong 250353, China., Ji XX; State Key Laboratory of Bio-based Materials and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong 250353, China., Tian Z; State Key Laboratory of Bio-based Materials and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong 250353, China; Shandong Huatai Paper Co., Ltd, Dongying, Shandong 257335, China. Electronic address: tianzhj@qlu.edu.cn., Ji H; State Key Laboratory of Bio-based Materials and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong 250353, China., Zhang F; Shandong Huatai Paper Co., Ltd, Dongying, Shandong 257335, China., Dai L; State Key Laboratory of Bio-based Materials and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong 250353, China; Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China. Electronic address: dailin@tust.edu.cn., Xie H; State Key Laboratory of Bio-based Materials and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong 250353, China; Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China., Si C; State Key Laboratory of Bio-based Materials and Green Papermaking, Key Laboratory of Pulp and Paper Science & Technology of Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Ji'nan, Shandong 250353, China; Tianjin Key Laboratory of Pulp and Paper, College of Light Industry and Engineering, Tianjin University of Science and Technology, Tianjin 300457, China; National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass, Nanjing Forestry University, Nanjing 210037, China. Electronic address: sichli@tust.edu.cn.
Jazyk: angličtina
Zdroj: International journal of biological macromolecules [Int J Biol Macromol] 2023 Mar 01; Vol. 230, pp. 123122. Date of Electronic Publication: 2023 Jan 02.
DOI: 10.1016/j.ijbiomac.2022.123122
Abstrakt: Lignin has been regarded as a potential natural sun screening agent. However, the dark color of traditional industrial lignin hinders its application in the field of skincare. In this study, a green and facile approach was developed to extract light-colored lignin. p-Toluenesulfonic acid (p-TsOH) was used to separate lignin and fibers from Kenaf stalks. During the isolation of lignin, formaldehyde was added to preserve the β-O-4 bonds of lignins in the form of stable acetals. The obtained lignin was further employed to prepare nanoparticles (LNPs) as sunscreen additives. After adding 4 wt% LNPs, the SPF values of the cream increased from 7.05 to 27.84. The residual fibers from the Kenaf stalks can be utilized for papermaking as the raw materials. by mixing them with softwood pulp to reduce the consumption of commercial pulp. With the addition of 5 wt% residual fibers in commercial softwood pulp, the produced paper showed better mechanical properties. The ring crush strength index and tear index of the samples increased from 2.49 N·m/g and 4.63 mN·m 2 /g to 2.62 N·m/g and 4.75 mN·m 2 /g, respectively. This study paved a way for the comprehensive utilization of Kenaf stalks towards not only papermaking but also daily chemical products.
Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
(Copyright © 2022. Published by Elsevier B.V.)
Databáze: MEDLINE
Externí odkaz: