Sifat Mekanik Membran Berbasis Paduan Kitosan Suksinat-Kitosan Terinsersi Litium

Abstract

ABSTRAKSifat mekanik merupakan salah satu karakter yang penting dalam pengembangan material polimer fungsional seperti membran elektrolit yang berpotensi untuk penghantar litium. Dalam penelitian yang telah dilakukan, membran elektrolit disintesis dengan bahan dasar kitosan suksinat dan kitosan, serta litium. Membran dipreparasi melalui metode inversi fasa dengan variasi komposisi fraksi massa kitosan suksinat dan kitosan. Selanjutnya dilakukan uji sifat mekanik. Hasil penelitian menunjukkan bahwa peningkatan fraksi massa kitosan suksinat sampai dengan 60 % (b/b) cenderung meningkatkan kekuatan tarik dan perpanjangan, serta menurunkan Modulus Young. Pada fraksi massa kitosan suksinat 70 % sampai dengan 80 % (b/b), kekuatan tarik dan perpanjangan cenderung menurun, serta Modulus Young meningkat. Nilai maksimum kekuatan tarik, perpanjangan, dan Modulus Young masing-masing adalah 0,18 MPa, 112 %, dan 14,31 MPa. Berdasarkan hasil analisis sifat mekaniknya, membran paduan kitosan suksinat-kitosan terinsersi litium memiliki stabilitas mekanik yang cukup baik. ABSTRACTMechanical properties is one of the important character in the development of functional materials such as polymer electrolyte membrane that potential for lithium conductor. In this research, electrolyte membrane based on chitosan succinate and chitosan, as well as lithium was synthesized. The membranes were prepared by phase inversion method with a variation of the composition of the mass fraction of chitosan succinate and chitosan, then testing in the mechanical properties. Results of study showed that the increase in mass fraction of chitosan succinate up to 60 % (w/ w) tends to increase the tensile strength and elongation, and decrease the Young's modulus. At the mass fraction of chitosan succinate 70 % to 80 % (w/w), tensile strength and elongation tend to decrease, and the Young's modulus increases. The maximum value of tensile strength, elongation, and Young's modulus of each is 0.18 MPa, 112 %, and 14.31 MPa. Based on the results of mechanical properties analysis, polyblend membrane of chitosan succinate-chitosan obtained by insertion lithium has a good mechanical stability.

Valorisation of Shrimp Waste into Chitosan/Montmorillonite-Sulfosuccinic Acid Composite Membrane for DMFC Application

“…The FTIR spectra of chitosan/montmorillonite-sulfosuccinic acid (CS/MMT-SSA) composite membranes are represented in Figure 6. In Figure 5 it is seen that there are several peaks the characteristics of the chitosan matrix that appear are in the area of number waves 3400-3470 cm -1 , 2877 cm -1 , 1647 cm -1 and 1589 cm -1 , each of which indicates the presence of stretching vibrations -OH, stretching vibrations -CH2, stretching vibration of the carbonyl group (C=O), and the bending vibration of N−H of the group amine (−NH2), similar spectrums were also found in other studies (Ramadhan et al, 2014;Purwanto et al, 2016b). The characteristic vibration bands of montmorillonite (MMT) MMT are shown near 1075 cm −1 (Si-O) (Zhang et al, 2007;Faghihi et al, 2013) and vibrations around 618 cm -1 Al-O-Si (Ayyubi and Admaja, 2020).…”