Back to Search
Start Over
The Effect of Glycerol on the Crystalline, Thermal, and Tensile Properties of CaCl2-Doped Starch/PVA Films.
- Source :
- Polymer Composites; Nov2016, Vol. 37 Issue 11, p3191-3199, 9p
- Publication Year :
- 2016
-
Abstract
- Starch/poly(vinyl alcohol) (PVA) films with the addition of 10 wt% CaCl<subscript>2</subscript> and various content of glycerol were prepared. The effect of glycerol on the crystalline, thermal, and tensile properties of CaCl<subscript>2</subscript>-doped starch/PVA films was studied by X-ray diffraction, thermogravimetric analysis (TGA), and tensile testing, respectively. The effect of glycerol on the miscibility of CaCl<subscript>2</subscript>-doped starch/PVA films was studied by scanning electron microscopy. The CaCl<subscript>2</subscript>-doped starch/PVA film became more homogeneous after the addition of glycerol. The addition of glycerol would increase the crystallinity of CaCl<subscript>2</subscript>-doped starch/PVA film. With the addition of 10 wt% glycerol and 10 wt% CaCl<subscript>2</subscript>, the starch/PVA film showed the highest degree of crystallinity. The TGA results show that the thermal stability of CaCl<subscript>2</subscript>-doped starch/PVA film increased after the addition of glycerol. The toughness of CaCl<subscript>2</subscript>-doped starch/PVA films was enhanced with the addition of glycerol. The starch/PVA film with the addition of 10 wt% CaCl<subscript>2</subscript> and 20 wt% glycerol showed the tensile strength of 17 MPa and the elongation at break of 428%. Moreover, the water sorption of CaCl<subscript>2</subscript>-doped starch/PVA film decreased after the addition of glycerol at the low and intermediate relative humidity of 33 and 54%. [ABSTRACT FROM AUTHOR]
- Subjects :
- STARCH
POLYVINYL alcohol
GLYCERIN
THERMOGRAVIMETRY
TENSILE strength
Subjects
Details
- Language :
- English
- ISSN :
- 02728397
- Volume :
- 37
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Polymer Composites
- Publication Type :
- Academic Journal
- Accession number :
- 118902424
- Full Text :
- https://doi.org/10.1002/pc.23517