Synthesis, Characterization, and Application of Carboxymethyl Cellulose from Asparagus Stalk End

Polymers

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 (CMC_as) using monochloroacetic acid (MCA) via carboxymethylation reaction with various sodium hydroxide (NaOH) concentrations starting from 20% to 60%. The cellulose and CMC_as 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 CMC_as films were also investigated. The optimum condition for producing CMC_as was found to be 30% of NaOH concentration for the carboxymethylation reaction, which provided the highest percent yield of CMC_as at 44.04% with the highest degree of substitution (DS) at 0.98. The melting point of CMC_as decreased with increasing NaOH concentrations. Crystallinity of CMC_as was significantly deformed (p < 0.05) after synthesis at a high concentration. The L* value of the CMC_as was significantly lower at a high NaOH concentration compared to the cellulose. The highest tensile strength (44.59 MPa) was found in CMC_as film synthesized with 40% of NaOH concentration and the highest percent elongation at break (24.99%) was obtained in CMC_as 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