Glycerol/starch/Na+-montmorillonite nanocomposites: A XRD, FTIR, DSC and 1H NMR study
MetadataShow full item record
We studied the influence of glycerol/MMT loading on the nanocomposites morphology prepared from amylose starch biopolymer with various glycerol/MMT (Na+-montmorillonite) concentrations. Samples were studied by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC) and proton nuclear magnetic resonance (1H NMR) measurements. XRD results highlighted the impact of glycerol on the MMT exfoliation; with 15% glycerol imposed the largest inter-lamella spacing (d-spacing) value. Newly formed hydrogen bonds and the interaction among starch/glycerol/MMT were evidenced by peaks associated with –OH stretching located at 3300cm−1 and 999cm−1 from the FTIR spectra. DSC measurements revealed that glass transition temperature (Tg) decreased with increasing glycerol content. MMT also lowered the crystallization temperature (Tm) and suppressed the overall sample crystallinity. Proton NMR spectra obtained at 25 ◦C and 70 ◦C from samples containing only starch and glycerol provided important clues for explaining the starch and glycerol interaction.
Showing items related by title, author, creator and subject.
Aghazadeh, M.; Karim, R.; Rahman, R.; Sultan, M.; Johnson, Stuart; Paykary, M. (2018)© 2018 Czech Academy of Agricultural Sciences. All rights reserved. The physical properties of corn, wheat and rice starch edible films with different level of glycerol were evaluated. Starch films exhibited an apparent ...
Synergistic interactions of plasticizers and nanoclays in hydrophilic starch based bionanocompositesLiu, HuiHua (2011)Depletion of non-renewable resources and exorbitant levels of carbon dioxide emissions have questioned the further usage of traditional plastics. The imbalance in global sustainability has necessitated the development and ...
Comparative study of film forming behaviour of low and high amylose starches using glycerol and xylitol as plasticizersMuscat, D.; Adhikari, B.; Adhikari, R.; Chaudhary, Deeptangshu (2012)In this study, the film forming behaviour of low amylose (LA) and high amylose (HA) starches was studied. The starch-alone and a blend of plasticizer (polyol)–starch films were developed by gelatinising at various ...