Peel adhesive strengths of multi-layered laminates composed of two polypropylene (PP) sheets and an inserted polyethylene (PE) layer (the middle layer) between the PP layers were evaluated. PE-glycidyl methacrylate (GMA) copolymers and a maleic-anhydride grafted PP (MAPP) were compared to the PE homopolymer and the PP homopolymer. The peel adhesive strength of PE-GMA/MAPP laminates was much higher than that of PE homopolymer/PP homopolymer laminates. Meanwhile, the blends composed of the PE-GMA and three types of PE homopolymer (PE-GMA+LDPE, PE-GMA+MDPE, PE-GMA+HDPE) were formulated as the PE middle layer of the multi-layered laminates. The PE blends had the same amount of glycidyl groups, and the deformation capacity was different in each. Namely, the PE blend of LDPE had higher elongation to break than the PE blend of HDPE. The peel adhesive strength of the multi-layered laminates with the middle layer of the LDPE blend was highest among the three types of laminates with the middle layer of the PE blends. Scanning electron microscopy on the fractured surfaces revealed that the large plastic deformation of the LDPE blended middle layer was responsible for the high energy absorption, and resulted in the high peel strength.
From H. Sakaki 1 2 | M. Nakagiri 1 | S. Matsuda 1 | N. Toyoda 1 | H. Kishi 1
1University of Hyogo, Graduate School of Engineering, Hyogo, Japan
2Suiko Co., Ltd., Hyogo, Japan
2Suiko Co., Ltd., Hyogo, Japan
(Received 20.06.2011; accepted 23.08.2011)
Appeared in International Polymer Processing 2012/02, Page 252-258
Direct link: http://www.polymer-process.com/IPP2531
Peel Adhesive Properties of Polymer Laminates Composed of Polyethylenes and Polypropylenes [692 KB]
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1 Agrawal, P., et al., “Blendas de PA6/PE: Avaliação da Reatividade de Diferentes Compatibilizantes com a PA6 por Reometria de Torque”, Revista Eletrônica de Materiais e Processos, 4.3, 1-10 (2009).
2 Agrawal, P., et al., “Reometria de Torque, Propriedades Mecânicas e Morfologia de Blendas Compatibilizadas de PA6/PEAD”, Polímeros: Ciência e Tecnologia, 18, 152–157 (2008).
3 Arun, A., et al., “Polyurethane Tri-block Copolymers-Synthesis, Mechanical, Elastic, and Rheological Properties”, Polym. Eng. Sci., 50, 747 –755, (2010).
4 Bernal-Lara, T. E., et al., “Structure and Thermal Stability of Polyethylene Nanolayers”, Polymer, 46, 3043 –3055, (2005).
5 Brent, T. G., Oliver S., “Polymer Surface Modification Using Microwave-Oven-Generated Plasma”, Langmuir, 19, 8117 –8118, (2003).
6 Brown, D. J., et al., “Dynamic Studies of Peel Failure in Metallized Polyester Films”, J. Mater. Sci., 21, 314 –320, (1986).
7 Durmus, A., et al., “Intercalated Linear Low Density Polyethylene (LLDPE)/Clay Nanocomposites Prepared with Oxidized Polyethylene as a New Type Compatibilizer: Structural, Mechanical and Barrier Properties”, Eur. Polym. J., 43, 3737 –3749, (2007).
8 Ebeling, T., et al., “Effect of Tie Layer on the Delamination Toughness of Polypropylene and Polyamide-66 Microlayers”, J. Appl. Polym. Sci., 71, 1461 –1467, (1999).
9 Hongyuan, C., et al., “Toughening of Recycled Poly(ethylene terephthalate)/Glass Fiber Blends with Ethylene–Butyl Acrylate–Glycidyl Methacrylate Copolymer and Maleic Anhydride Grafted Polyethylene– Octene Rubber”, J. Appl. Polym. Sci., 109, 2795 –2801, (2008).
10 Jonghwi, L., et al., “Development of Discrete Nanopores 1: Tension of Polypropylene/Polyethylene Copolymer Blends”, J. Appl. Polym. Sci., 91, 3642–3650, (2003).
11 Kim, J., et al., “Characterization of Acetylene Plasma-Polymer Films: Recovery of Surface Hydrophobicity by Aging”, Bull. Korean Chem. Society, 30, 11, 2589 –2594, (2009).
12 Kodama, J., et al., European Patent 0 626 078 B1 (2002).
13 Mariano, P., et al., “Reactive Mixing of PET and PET/PP Blends with Glycidyl Methacrylate-Modified Styrene-b-(Ethylene-co-Olefin) Block Copolymers”, J. Appl. Polym. Sci., 98, 2201–2211,(2005).
14 Mariano, P., Donatella, C., “Reactive Compatibilization of Blends of PET and PP Modified by GMA Grafting”, Proceeding of Macromolecular Symposia, 198, 161–171, (2003).
15 Moreno, L., Leevers, P., “Impact Fracture Toughness of Polyethylene/Polypropylene Multilayers”, Polym. Eng. Sci., 44, 1627 –1635, (2004).
16 Poon, B. C., et al., “Adhesion of Polyethylene Blends to Polypropylene”, Polymer, 45, 893–903, (2005).
17 Sakaki, H., et al., “Polypropylene/Polyethylene Multilayer Rotational Molding.” Journal of the Adhesion Society of Japan, 46, 12, 473– 478, (2010).
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