Polymers | |
Synthesis, Characterization, and Application of Carboxymethyl Cellulose from Asparagus Stalk End | |
Winita Punyodom1  Pensak Jantrawut1  SaranaRose Sommano1  Alissara Reungsang2  ThiMinh Phuong Ngo3  Suphat Phongthai4  Yuthana Phimolsiripol4  Warinporn Klunklin4  Chayatip Insomphun4  Thanongsak Chaiyaso4  Kittisak Jantanasakulwong4  Pornchai Rachtanapun4  Noppol Leksawasdi4  Phisit Seesuriyachan4  | |
[1] Center of Excellence in Materials Science and Technology, Chiang Mai University, Chiang Mai 50200, Thailand;Department of Biotechnology, Faculty of Technology, Khon Kaen University, Khon Kaen 40002, Thailand;Department of Chemical Technology and Environment, The University of Danang—University of Technology and Education, Danang 550000, Vietnam;School of Agro-Industry, Faculty of Agro-Industry, Chiang Mai University, Chiang Mai 50100, Thailand; | |
关键词: agricultural waste; asparagus; biopolymer; carboxymethyl cellulose; CMC; degree of substitution; | |
DOI : 10.3390/polym13010081 | |
来源: DOAJ |
【 摘 要 】
Cellulose from Asparagus officinalis stalk end was extracted and synthesized to carboxymethyl cellulose (CMCas) using monochloroacetic acid (MCA) via carboxymethylation reaction with various sodium hydroxide (NaOH) concentrations starting from 20% to 60%. The cellulose and CMCas were characterized by the physical properties, Fourier Transform Infrared spectroscopy (FTIR), Differential scanning calorimetry (DSC), Scanning electron microscopy (SEM) and X-ray diffraction (XRD). In addition, mechanical properties of CMCas films were also investigated. The optimum condition for producing CMCas was found to be 30% of NaOH concentration for the carboxymethylation reaction, which provided the highest percent yield of CMCas at 44.04% with the highest degree of substitution (DS) at 0.98. The melting point of CMCas decreased with increasing NaOH concentrations. Crystallinity of CMCas was significantly deformed (p < 0.05) after synthesis at a high concentration. The L* value of the CMCas was significantly lower at a high NaOH concentration compared to the cellulose. The highest tensile strength (44.59 MPa) was found in CMCas film synthesized with 40% of NaOH concentration and the highest percent elongation at break (24.99%) was obtained in CMCas film treated with 30% of NaOH concentration. The applications of asparagus stalk end are as biomaterials in drug delivery system, tissue engineering, coating, and food packaging.
【 授权许可】
Unknown