Thermal, Dynamic Mechanical, and Barrier Studies of Potassium Permanganate-LDPE Nanocomposites

Topics: Polymer, Ethylene, Differential scanning calorimetry Pages: 21 (3796 words) Published: February 17, 2014
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Polymer-Plastics Technology and Engineering
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Thermal, Dynamic Mechanical, and Barrier Studies of
Potassium Permanganate-LDPE Nanocomposites
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Rahim Khosravi , Seyed Ali Hashemi , Seyed Alireza Sabet & Amir Masoud Rezadoust

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Department of Composite Engineering and Processing, Iran Polymer Institute, Tehran, Iran Version of record first published: 05 Feb 2013.

To cite this article: Rahim Khosravi , Seyed Ali Hashemi , Seyed Alireza Sabet & Amir Masoud Rezadoust (2013): Thermal, Dynamic Mechanical, and Barrier Studies of Potassium Permanganate-LDPE Nanocomposites, Polymer-Plastics Technology and Engineering, 52:2, 126-132

To link to this article: http://dx.doi.org/10.1080/03602559.2012.719056

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Polymer-Plastics Technology and Engineering, 52: 126–132, 2013 Copyright # Taylor & Francis Group, LLC
ISSN: 0360-2559 print=1525-6111 online
DOI: 10.1080/03602559.2012.719056

Thermal, Dynamic Mechanical, and Barrier Studies of
Potassium Permanganate-LDPE Nanocomposites
Rahim Khosravi, Seyed Ali Hashemi, Seyed Alireza Sabet, and
Amir Masoud Rezadoust

Downloaded by [78.39.229.183] at 06:52 10 March 2013

Department of Composite Engineering and Processing, Iran Polymer Institute, Tehran, Iran

This study investigated nanocomposites based on low density
polyethylene containing 2, 3, 5 and 7 wt% potassium permanganate (KMnO4) nanoparticles as a new novel material used for film packaging in fruit industry. This work included preparation and modification of nano-KMnO4, fabrication and characterization of the nanocomposites. Presence of filler caused reduction in degree of crystallinity that was confirmed by WXRD and DSC analysis. Barrier properties of nanocomposite against oxygen were improved up to 24%.

Keywords Barrier properties; Dynamic mechanical; LDPE;
Potassium permanganate; Thermal

INTRODUCTION
Polymer nanocomposite prepared from the inorganic
filler due to improvement in mechanical, barrier and other
properties, is consider as a suitable option for packaging
applications[1–7]. Improve barrier properties extends the
shelf life of food and fruit by preventing or reduces the concentration of humidity or gases such as oxygen, ethylene, and carbon dioxide[8–10].
Low Density Polyethylene (LDPE), with its advantages
of being inert and good barrier properties to gases and
water vapor, is widely used in both packaging and nonpackaging applications[11]. There are several researches on the incorporation of mineral nanofillers with LDPE, aiming to improve its mechanical, thermal, barrier, and rheological properties.

Potassium permanganate is an inorganic chemical compound and almost all application focuses on its oxidizing properties[12]. Potassium permanganate...


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