Next Article in Journal
Tensile Strength and Structure of the Interface between a Room-Curing Epoxy Resin and Thermoplastic Films for the Purpose of Sensor Integration
Next Article in Special Issue
Linear-Nonlinear Stiffness Responses of Carbon Fiber-Reinforced Polymer Composite Materials and Structures: A Numerical Study
Previous Article in Journal
Edible Films from Carrageenan/Orange Essential Oil/Trehalose—Structure, Optical Properties, and Antimicrobial Activity
Previous Article in Special Issue
Representative Cell Analysis for Damage-Based Failure Model of Polymer Hexagonal Honeycomb Structure under the Out-of-Plane Loadings
 
 
Article

Adhesion Improvement between PE and PA in Multilayer Rotational Molding

Department of Materials Engineering, Faculty of Mechanical Engineering Czech Technical University in Prague, Karlovo Náměstí 13, 121 35 Prague 2, Czech Republic
*
Author to whom correspondence should be addressed.
Academic Editors: Majid Reza Ayatollahi, Luigi Sorrentino, Seyed Saeid Rahimian Koloor, Mohd Hamdi bin Abd Shukor and Michal Petrů
Polymers 2021, 13(3), 331; https://doi.org/10.3390/polym13030331
Received: 15 December 2020 / Revised: 15 January 2021 / Accepted: 19 January 2021 / Published: 21 January 2021
(This article belongs to the Special Issue Damage Mechanics of Polymer Composites)
The aim of this study is to investigate a multilayer structure made of polyethylene and polyamide by rotational molding. Due to the different polarity of these polymers, it is difficult to ensure enough adhesion between created layers. Two methods leading to improve adhesion are introduced. Plasma modification of polyethylene powder, after which new functional groups are bound to the treated surface, may enhance specific adhesion by forming hydrogen bonds with-CONH groups of polyamide. Different strategies of adding material to the mold give rise to complicated interlayer which increases joint strength by mechanism of the mechanical adhesion. Mechanical tests show a significant improvement of joint strength, where treated samples reached two-fold values of peel strength (7.657 ± 1.024 N∙mm−1) against the untreated sample (3.662 ± 0.430 N∙mm−1). During bending test, delamination occurred only in samples that were made of the untreated polyethylene. Adding polyamide during the melting stage of polyethylene powder in rotomolding resulted in the formation of entanglements which improve the peel strength almost eight times in comparison with the sample where the polyethylene was left to completely melt and create smooth interlayer surface. View Full-Text
Keywords: multilayer rotational molding; adhesion; plasma treatment; polyethylene; polyamide multilayer rotational molding; adhesion; plasma treatment; polyethylene; polyamide
Show Figures

Graphical abstract

MDPI and ACS Style

Sezemský, J.; Špatenka, P. Adhesion Improvement between PE and PA in Multilayer Rotational Molding. Polymers 2021, 13, 331. https://doi.org/10.3390/polym13030331

AMA Style

Sezemský J, Špatenka P. Adhesion Improvement between PE and PA in Multilayer Rotational Molding. Polymers. 2021; 13(3):331. https://doi.org/10.3390/polym13030331

Chicago/Turabian Style

Sezemský, Jan, and Petr Špatenka. 2021. "Adhesion Improvement between PE and PA in Multilayer Rotational Molding" Polymers 13, no. 3: 331. https://doi.org/10.3390/polym13030331

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop