Thermomechanical properties of poly(vinyl alcohol) plasticized with varying ratios of sorbitol

被引：68
作者：
Mohsin, Mahmood [1 ]
Hossin, Asiful [2 ]
Haik, Yousef [2 ,3 ]
机构：
[1] United Arab Emirates Univ, Dept Chem, Al Ain, U Arab Emirates
[2] United Arab Emirates Univ, Dept Mech Engn, Al Ain, U Arab Emirates
[3] Univ N Carolina, Ctr Res Excellence Nanobiosci, Greensboro, NC 27412 USA
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 528卷 / 03期
关键词：
Poly(vinyl alcohol); Sorbitol; FTIR; Thermal analysis; Nanoindentation; POLYMER ELECTROLYTES; THERMAL-PROPERTIES; IONIC LIQUIDS; MECHANICAL-PROPERTIES; EDIBLE FILMS; BLENDS; GELATIN; STARCH; WATER; BIODEGRADATION;
D O I：
10.1016/j.msea.2010.09.100
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The objective of this work is to study the thermal and mechanical properties of films based on blends of poly(vinyl alcohol) (PVA) with different weight percent of sorbitol. Solid-state PVA/sorbitol polymer membranes were prepared by a solution casting method. The characteristic properties of these polymer membranes were examined by thermo-gravimetric analysis (TGA), differential scanning calorimetry (DSC), nanoindentation methods and by Fourier Transform Infrared (FTIR) spectroscopy. It was found that the thermal properties (glass transition, T-g, melting point, T-m and decomposition temperature, T-d) for PVA blends showed a decrease proportional to the sorbitol concentrations. The hardness and elastic modulus obtained from nanoindentation test were also found to decrease with increase in plasticizer concentration. FTIR confirmed the reduction in hydrogen bonding between PVA chains in favour of formation new bonding between the plasticizer and the PVA chains. (C) 2010 Elsevier B.V. All rights reserved.
引用
收藏
页码：925 / 930
页数：6
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