Glycerol/starch/Na+-montmorillonite nanocomposites: A XRD, FTIR, DSC and 1H NMR study

被引：151

作者：

Liu, Huihua ^{[1
]}

Chaudhary, Deeptangshu ^{[1
]}

Yusa, Shin-ichi ^{[2
]}

Tade, Moses O. ^{[1
]}

机构：

[1] Curtin Univ Technol, Dept Chem Engn, Perth, WA, Australia

[2] Hyogo Med Univ, Dept Mat Sci & Chem, Himeji, Hyogo, Japan

来源：

CARBOHYDRATE POLYMERS | 2011年 / 83卷 / 04期

关键词：

Starch; Nanocomposite; Glycerol; XRD; Proton NMR; STARCH GRANULES; INTERCALATION; FOAMS; FILMS;

D O I：

10.1016/j.carbpol.2010.10.018

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

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 (H-1 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 3300 cm(-1) and 999 cm(-1) from the FTIR spectra. DSC measurements revealed that glass transition temperature (T-g) decreased with increasing glycerol content. MMT also lowered the crystallization temperature (T-m) and suppressed the overall sample crystallinity. Proton NMR spectra obtained at 25 degrees C and 70 degrees C from samples containing only starch and glycerol provided important clues for explaining the starch and glycerol interaction. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：1591 / 1597

页数：7

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