Characterization of Extruded Thermoplastic Starch Reinforced by Montmorillonite Nanoclay

被引：18

作者：

Zhang, Yachuan ^{[1
]}

Liu, Qiang ^{[1
]}

Hrymak, Andrew ^{[2
]}

Han, Jung H. ^{[3
]}

机构：

[1] Agr & Agri Food Canada, Guelph Food Res Ctr, Guelph, ON N1G 5C9, Canada

[2] Univ Western Ontario, Dept Chem & Biochem Engn, London, ON N6A 5B9, Canada

[3] PepsiCo Adv Res, Plano, TX 75024 USA

来源：

JOURNAL OF POLYMERS AND THE ENVIRONMENT | 2013年 / 21卷 / 01期

关键词：

Potato starch thermoplastics; Montmorillonite; Tensile properties; Moisture sorption isotherm; Glass transition temperature; THERMAL-PROPERTIES; PHYSICAL-PROPERTIES; GLASS-TRANSITION; PEA; NANOCOMPOSITES; FILMS; MICROSTRUCTURE; PLASTICIZATION; GLYCEROL; MOISTURE;

D O I：

10.1007/s10924-012-0528-0

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

The purpose of this study was to understand how the montmorillonite (MMT) nanoclay influences physical and mechanical properties of thermoplastic starch (TPS), which was produced by a conventional extrusion procedure. MMT nanoclay was added at 0, 4, and 8 % (w/w) concentrations. Transmission electron microscopy (TEM) showed most MMT platelets existed in tactoid structure in the starch matrix. In addition, FTIR spectra indicated TPS/MMT nanocomposites kept chemically stable after the extrusion. Tensile strength (TS) was about 7.0 MPa, while elongation-at-break (E) and elastic modulus (EM) were about 52 % and 32-41 MPa, respectively. Moisture sorption behaviour of the samples was well described by GAB and BET models. Thermal property tests exhibited the glass transition temperature (T (g) ) of the nanocomposites decreased with increasing MMT from 0 to 8 %, indicating MMT nanoclay had a plasticization effect.

引用

页码：122 / 131

页数：10

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