Characterization of Formacell Lignin Derived from Black Liquor as a Potential Green Additive for Advanced Biocomposites  

作　　者：Sri Hidayati Eugenia Fonny Budiyanto Hadi Saputra Sutopo Hadi Apri Heri Iswanto Nissa Nurfajrin Solihat Petar Antov Lee Seng Hua Widya Fatriasari MohdSapuan Salit 

机构地区：[1]Agricultural Product Technology Department,Faculty of Agriculture,The University of Lampung,Jl.Sumantri Brojonegoro No.1,Bandar Lampung,Indonesia [2]Department of Forest Product,Faculty of Forestry,Universitas Sumatera Utara,Kampus USU Padang Bulan,North Sumatra,Indonesia [3]JATI-Sumatran Forestry Analysis Study Center,Jl.Tridharma Ujung No.1,Kampus USU,Medan,North Sumatra,Indonesia [4]Research Center for Biomass and Bioproducts,National Research and Innovation Agency(BRIN),Jl.Raya Bogor,Cibinong,Indonesia [5]Faculty of Forest Industry,University of Forestry,Sofia,Bulgaria [6]Department of Wood Industry,Faculty of Applied Sciences,Universiti Teknologi MARA(UiTM),Cawangan Pahang Kampus Jengka,Lintasan Semarak,Bandar Jengka,Malaysia [7]Institute of Tropical Forestry and Forest Products,Universiti Putra Malaysia,Selangor,Malaysia [8]Research Collaboration Center for Marine Biomaterials,Jl.Ir.Sukarno,Jatinangor,Sumedang,West Java,Indonesia [9]Advanced Engineering Materials and Composites Research Centre,Department of Mechanical and Manufacturing Engineering,Universiti Putra Malaysia,Selangor,Malaysia

出　　处：《Journal of Renewable Materials》2023年第6期2865-2879,共15页可再生材料杂志（英文）

基　　金：This work was also supported by the Project“Development,Properties,and Application of Eco-Friendly Wood-Based Composites”,No.HИC-Б-1145/04.2021,carried out at the University of Forestry,Sofia,Bulgaria.The authors would like to acknowledge the Fundamental Research Grant Scheme(FRGS 2018-1);Reference Code:FRGS/1/2018/WAB07/UPM/1 provided by the Ministry of Higher Education,Malaysia.

摘　　要：Black liquor is obtained as a by-product of the pulping process,which is used to convert biomass into pulp by removing lignin,hemicelluloses and other extractives from wood to free cellulose fibers.Lignin represents a major constituent in black liquor,with quantities varying from 20%to 30%,of which a very low share is used for manufacturing value-added products,while the rest is mainly burned for energy purposes,thus underestimating its great potential as a raw material.Therefore,it is essential to establish new isolation and extraction methods to increase lignin valorization in the development of bio-based chemicals.The aim of this research work was to determine the effect of KOH or ethanol concentration as an isolation agent on lignin yields and the chemical characteristics of lignin isolated from formacell black liquor of oil palm empty fruit bunch(OPEFB).Isolation of lignin was carried out using KOH with various concentrations ranging from 5%to 15%(w/v).Ethanol was also used to precipitate lignin from black liquor at concentrations varying from 5%to 30%(v/v).The results obtained showed that the addition of KOH solution at 12.5%and 15%concentrations resulted in better lignin yield and chemical properties of lignin,i.e.,pH values of 3.86 and 4.27,lignin yield of 12.78%and 14.95%,methoxyl content of 11.33%and 10.13%,and lignin equivalent weights of 476.25 and 427.03,respectively.Due to its phenolic structure and rich functional groups that are favorable for modifications,lignin has the potential to be used as a green additive in the development of advanced biocomposite products in various applications to replace current fossil fuel-based material,ranging from fillers,fire retardants,formaldehyde scavengers,carbon fibers,aerogels,and wood adhesives.

关 键 词：Formacell black liquor lignin properties KOH ETHANOL oil palm empty fruit bunch advanced biocomposite 

分 类 号：TB33[一般工业技术—材料科学与工程]