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HDPE/Chitosan Blends Modified with Organobentonite Synthesized with Quaternary Ammonium Salt Impregnated Chitosan

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Graduate Program in Science and Materials Engineering, Federal University of Paraíba, João Pessoa, PB 58051-900, Brazil
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Department of Materials Engineering, Federal University of Campina Grande, Campina Grande, PB 58429-900, Brazil
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Department of Materials Engineering, Federal University of Paraíba, João Pessoa, PB 58051-900, Brazil
*
Author to whom correspondence should be addressed.
Materials 2018, 11(2), 291; https://doi.org/10.3390/ma11020291
Received: 21 November 2017 / Revised: 20 December 2017 / Accepted: 25 December 2017 / Published: 13 February 2018
In this study, blends based on a high density polyethylene (HDPE) and chitosan (CS) were successfully prepared by melt processing, in a laboratory internal mixer. The CS biopolymer content effect (up to maximum of 40%), and, the addition of bentonite clay modified with quaternary ammonium salt (CTAB) impregnated chitosan as a compatibilizing agent, on the properties of the blends was analyzed by Fourier transform-infrared spectroscopy (FT-IR), wide angle X-ray diffraction (WAXD), differential scanning calorimetry (DSC), thermogravimetric analyses (TG), tensile strength, and scanning electron microscopy (SEM). The use of clay modified with CTAB impregnated chitosan, employing a method developed here, improved the compatibility of HDPE with chitosan, and therefore the thermal and some of the mechanical properties were enhanced, making HDPE/chitosan blends suitable candidates for food packaging. It was possible to obtain products of synthetic polymer, HDPE, with natural polymer, chitosan, using a method very used industrially, with acceptable and more friendly properties to the environment, when compared to conventional synthetic polymers. In addition, due to the possibility of impregnated chitosan with quaternary ammonium salt exhibit higher antibacterial activity than neat chitosan, the HDPE/chitosan/organobentonite blends may be potentially applied in food containers to favor the preservation of food for a longer time in comparison to conventional materials. View Full-Text
Keywords: HDPE; chitosan; organobentonite; compatibilizer; quaternary ammonium HDPE; chitosan; organobentonite; compatibilizer; quaternary ammonium
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MDPI and ACS Style

De Araújo, M.J.G.; Barbosa, R.C.; Fook, M.V.L.; Canedo, E.L.; Silva, S.M.L.; Medeiros, E.S.; Leite, I.F. HDPE/Chitosan Blends Modified with Organobentonite Synthesized with Quaternary Ammonium Salt Impregnated Chitosan. Materials 2018, 11, 291.

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