IR study of analytical and structural characteristics of low-substituted methylcellulose films

Preparation and Characterization of Biopolymer Electrolyte Membranes Based on LiClO4-Complexed Methyl Cellulose as Lithium-ion Battery Separator

“…Pure methyl cellulose (MC), as reference, has some important absorption groups, such as O-H stretching, C-H stretching, CH3, C-C ring stretching, C-O-C stretching, and OCH3 at 3450.65; 2933.72; 2837.28; 1654.92; 1070.49 and 947.04 cm -1 , respectively. These bands are similar to those from a previous report [29]. However, the LiClO4-complexed MC biopolymer electrolyte membrane showed no significant wavenumber shift compared to pure MC as reference.…”

“…Different approaches to produce good polymer electrolyte membranes have been investigated, among others: using dopants, plasticizers [24][25], polymer blending [26], or cross-linking [27]. Several researches worked with biopolymer electrolytes such as carrageenan-based [17,28] cellulose acetate-based [23], chitosan-based [24,[19][20][21][22], cellulose-based [29] electrolytes.…”

“…Cellulose derivatives are very promising biopolymer electrolyte membrane candidates because they have good properties, such as transparency, flexibility and resistance to oil and fat [34]. The advantages of good mechanical properties and thermal stability can replace commercial synthetic materials that have been used previously [29]. Methyl cellulose (MC) is an important cellulose ether [26] besides ethyl cellulose [12], carboxymethyl cellulose (CMC) [4,18] and hydroxyethyl cellulose (HEC) [16].…”

Characterization and antimicrobial properties of food packaging methylcellulose films containing stem extract of Ginja cherry

“…The spectrum of the control sample shows all peaks belonging to MCglycerol films as previously reported in the literature. 24,25 The most important ones are the signals at 924, 1035, 1107 and 1110 cm −1 (C-O and C-C bonds present in the cellulosic structure), at 2883 and 2935 cm −1 (C-H bonds of methyl groups, symmetric and asymmetric stretching) and in the range 1320-1450 cm −1 (in-plane and out-of-plane CH 2 bending) and the broad peaks at about 3340 cm −1 (OH stretching vibration) and 1645 cm −1 (bound water vibration).…”

Innovative Composite Films of Chitosan, Methylcellulose, and Nanoparticles

“…In the 1600 to 1700 cm −1 region, amide peaks (C = O stretching of amide bonds), amine peaks (1614 and 1643 cm −1 strong N‐H bending vibrations of secondary amines), 1000 to 1200 cm −1 (v C‐O) are observed and are reported also in different papers (Barcenas and others 2008). In FTIR spectrum of MC, the characteristic peaks at 3471 cm −1 (O‐H stretching), 2932 cm −1 (C‐H stretching), 1585 cm −1 (v C‐O), 1064 cm −1 (v C‐O‐C), 1465, 1123, 944 cm −1 due to metoxygroups, are observed (Ledvik and others 1965; Zaccaron and others 2005). In Figure 2A, the FTIR spectra of composite films are reported (from CH 10 to CH 40); the spectra of films with high CH concentration (more than 50%) are not reported because these were considered saturated.…”