Research articles
ScienceAsia 49 (2023):ID 541-552 |doi:
10.2306/scienceasia1513-1874.2023.045
Utilization of sugarcane bagasse for synthesis of
carboxymethylcellulose and its biodegradable blend films
Supaporn Sophonputtanaphocaa,*, Sehanat Prasongsukb, Phussadee Chutonga, Chalermkhwan Samathayanonb, Kamonchai Cha-aima
ABSTRACT: The objective of this study is to synthesize and extensively characterize carboxymethylcellulose from
sugarcane bagasse cellulose (CMC-SC) to evaluate its potential use in blend films. A single step of alkaline hydrogen
peroxide pretreatment at a low temperature was used to extract cellulose from sugarcane bagasse. The CMC-SC was
extensively characterized with respect to its structure, crystallinity, degree of substitution (DS), average molecular
weight (Mw), degree of polymerization (DP), viscosity, thermal property, antioxidant property and morphological
structure as compared to a commercial CMC (CMC-COM). CMC-SC displays a DS, average Mw and DP of 0.7, 2?106
and
9,204, respectively. The Rapid Visco Analyzer method revealed a relatively low viscosity (65.7 cP) for 4% (w/v) CMCSC solution at 45 ?C. A melting temperature (Tm) close to 250 ?C was measured, as was a glass transition temperature
(Tg
) of 102.4 ?C. The DPPH assay indicated that CMC-SC exhibited higher antioxidation activity than CMC-COM.
The characterization of the blend films between CMC-SC and polyvinyl alcohol (CMC-SC/PVA) with varying glycerol
concentrations showed they had better properties with greater elongation at break than CMC-COM films with or without
copolymer blending.
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a |
Division of Biotechnology and Agricultural Products, Faculty of Agricultural Product Innovation and Technology,
Srinakharinwirot University, Ongkharak Campus, Nakhon Nayok 26120 Thailand
|
b |
Plant Biomass Utilization Research Unit, Department of Botany, Faculty of Science, Chulalongkorn University,
Bangkok 10330 Thailand |
* Corresponding author, E-mail: supapornsp@g.swu.ac.th
Received 2 Apr 2022, Accepted 19 Apr 2023
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