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Natural weather ageing of starch/polyvinyl alcohol blend: effect of glycerol content

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Published/Copyright: April 11, 2013
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Journal of Polymer Engineering
From the journal Journal of Polymer Engineering Volume 33 Issue 3

Abstract

Starch plasticized with glycerol and blended with polyvinyl alcohol (PVA) is recommended for use as a biodegradable material. The present article reports the results of studies of the natural weather ageing of starch/PVA blends having various amounts of glycerol in natural weather conditions of Saudi Arabia, with special reference to morphology and thermal behavior. Neat PVA has been used as a control to understand its behavior in its blend with starch. Differential scanning calorimeter studies indicated that an increase in the exposure time of samples to natural environment increases the crystallinity of PVA due to the breakage of intermolecular hydrogen bonding, thus facilitating the removal of the amorphous portion of the polymers in the blend. Thermogravimetric analysis revealed that an increase in glycerol content enhanced the degradation of the polymer, which is corroborated with the findings from the surface morphology using scanning electron microscopy and Fourier transfer infrared spectroscopy analyses.

Keywords: natural weather ageing; polyvinyl alcohol; starch; thermal analysis
Corresponding author: Mamdouh A. Al-Harthi, Department of Chemical Engineering, King Fahd University of Petroleum and Minerals, PO Box 5050 Dhahran 31261, Kingdom of Saudi Arabia; and Center for Research Excellence in Petroleum Refining and Petrochemicals, King Fahd University of Petroleum and Minerals, PO Box 5040 Dhahran 31261, Kingdom of Saudi Arabia

Thanks are due to the Center for Research Excellence in Petroleum Refining and Petrochemicals and the Chemical Engineering Department of King Fahd University of Petroleum and Minerals for providing the facility to utilize equipment for this study.

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Received: 2012-5-27
Accepted: 2013-3-13
Published Online: 2013-04-11
Published in Print: 2013-05-01

©2013 by Walter de Gruyter Berlin Boston

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https://doi.org/10.1515/polyeng-2012-0048
Keywords for this article
natural weather ageing; polyvinyl alcohol; starch; thermal analysis

Articles in the same Issue

  1. Masthead
  2. Masthead
  3. Original Articles
  4. A comparison of two metamodel-based methodologies for multiple criteria simulation optimization using an injection molding case study
  5. Modeling and evaluation of the filling process of vacuum-assisted compression resin transfer molding
  6. The effect of fiber-reinforced interleaves on the interlaminar shear strength of continuous glass fiber-reinforced polypropylene laminates
  7. The effects of magnesium oxide on the thermal, morphological, and crystallinity properties of metallocene linear low-density polyethylene/rubbers composite
  8. Comparison of chemical fractionation method and 1H-NMR spectroscopy in measuring the monomer block distribution of algal alginates
  9. Effect of brake pad waste powder incorporation on the performance of styrene-butadiene rubber vulcanizates
  10. Natural weather ageing of starch/polyvinyl alcohol blend: effect of glycerol content
  11. Tailoring the magnetic behavior of polymeric particles for bioapplications
  12. Novel proton exchange membranes with dimensional stability and permeability resistance based on sulfonate polynorbornenes
  13. Synthesis, characterization and separation properties of novel PU membranes crosslinked by β-cyclodextrin
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