Anti-Microbial, Thermal, Mechanical, and Gas Barrier Properties of Linear Low-Density Polyethylene Extrusion Blow-Molded Bottles

Author:

Alkarri Saleh1,Naveed Muhammed1,Alali Fatimah2,Vachon Jérôme3,Walworth Aaron1,Vanderberg Abigail4

Affiliation:

1. School of Packaging, Michigan State University, 448 Wilson Road, East Lansing, MI 48824-1223, USA

2. Almoosa College of Health Sciences, Ain Najm Rd, Al Mubarraz 36422, Saudi Arabia

3. SABIC, P.O. Box 319, 6160 AH Geleen, The Netherlands

4. Center for Advanced Microscopy, Michigan State University, 578 Wilson Road, CIPS Bldg, Rm B-6B, East Lansing, MI 48824-1223, USA

Abstract

Microbial contamination can occur on the surfaces of blow-molded bottles, necessitating the development and application of effective anti-microbial treatments to mitigate the hazards associated with microbial growth. In this study, new methods of incorporating anti-microbial particles into linear low-density polyethylene (LLDPE) extrusion blow-molded bottles were developed. The anti-microbial particles were thermally embossed on the external surface of the bottle through two particle deposition approaches (spray and powder) over the mold cavity. The produced bottles were studied for their thermal, mechanical, gas barrier, and anti-microbial properties. Both deposition approaches indicated a significant enhancement in anti-microbial activity, as well as barrier properties, while maintaining thermal and mechanical performance. Considering both the effect of anti-microbial agents and variations in tensile bar weight and thickness, the statistical analysis of the mechanical properties showed that applying the anti-microbial agents had no significant influence on the tensile properties of the blow-molded bottles. The external fixation of the particles over the surface of the bottles would result in optimum anti-microbial activity, making it a cost-effective solution compared to conventional compounding processing.

Publisher

MDPI AG

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