Open AccessPreparation and characterization of chitosan-starch Janeng membranes cross-linking with citric acid
Author(s) -
Saiful Saiful,
Lidya Mardiana,
Zuliana Rahmah,
Maurisa Ajrina,
Maya Rizki Imanda,
Rahmi Rahmi,
Khairi,
Muliadi Ramli,
Marlina Marlina
Publication year - 2021
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/1087/1/012066
Subject(s) - differential scanning calorimetry , membrane , thermogravimetric analysis , chitosan , fourier transform infrared spectroscopy , materials science , endothermic process , citric acid , thermal decomposition , chemical engineering , scanning electron microscope , starch , polymer chemistry , nuclear chemistry , chemistry , organic chemistry , composite material , adsorption , biochemistry , physics , engineering , thermodynamics
Neat chitosan membranes have shortcomings in their application owing to weak mechanical properties, thus, requiring modification. In this study, a chitosan membrane was modified utilizing starch and cross-linking agent (citric acid) addition. The characterization of chitosan-starch membranes using Universal Testing Machine, Scanning Electron Microscope (SEM), Fourier Transform Infra-Red (FTIR), Differential Scanning Calorimetry (DSC), and Thermogravimetric Analysis (TGA) had proven the cross-linking formation. The cross-linked membrane had better tensile strength (11.07 kgf/mm 2 ) than the uncross-linked membrane (66.07kgf/mm 2 ). The DSC thermogram of uncross-linked and cross-linked membranes showed endothermic and exothermic peaks at different temperatures. In addition to the membranes’ thermal characteristics, the DTA thermogram showed the decomposition process on the uncross-linked membrane uncross-linking occurred at a temperature range of 277.74-363.27 °C, while the decomposition of the cross-linked membrane was observed at a range of 287.83-356.38 °C. The FT-IR spectra confirmed a decrease in the intensity of the absorption peak associated with cross-linking formation within the membrane.