Extraction of nanocellulose from pineapple leaves by acid-hydrolysis and pressurized acid hydrolysis for reinforcement in natural rubber composites

International Conference on Materials Research and Innovation

Chawalitsakunchai, W.^1 ; Dittanet, P.^1 ; Loykulnunt, S.^2 ; Tanpichai, S.^3 ; Prapainainar, P.^1

National Center of Excellence for Petroleum, Petrochemicals and Advance Material, Department of Chemical Engineering, Faculty of Engineering, Kasetsart University, Bangkok

10900, Thailand^1

Natural Rubber Focus Unit, National Metal and Materials Technology Center, NSTDA, 111 Paholyothin Rd., Klong 1, Klong Luang, Pathumthani

12120, Thailand^2

Learning Institute and Cellulose and Bio-based Nanomaterials Research Group, King Mongkut's University of Technology Thonburi, Bangkok

10140, Thailand^3

关键词: Acid hydrolysis;    Cellulose-SO;    Crystallinity index;    Fourier;    Morphology and structures;    Natural rubber composites;    Reinforcing fillers;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/526/1/012019/pdf
DOI  :  10.1088/1757-899X/526/1/012019

来源: IOP

【 摘 要 】

This work aimed to study the extraction of nanocellulose (CNC) from pineapple leaves (PL) for using as a reinforcing filler in the natural rubber. PL mainly consists of cellulose so it is properly used for nanocellulosic extraction. The extractions were performed by acid-hydrolysis and pressurized acid-hydrolysis methods. The morphology and structure of the extracted nanocelluloses were compared and investigated using transmission electron microscope, Fourier transformed infrared, and X-ray diffraction analysis. It was found that pineapple leave has 27.64% of α-cellulose. The size of celluloses, which were extracted and hydrolyzed by acid-hydrolysis and pressurized acid hydrolysis, were reduced to 130 and 117 nm, respectively. And the shape was rodlike. The crystallinity index (CrI) of CNC was increased to 92.95 % and 91.24 % when it was treated by acid hydrolysis and pressurized acid hydrolysis, respectively.