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Updated: Jan 20, 2026
The Preparation and Properties of Thermo-reversibly Cross-linked Rubber Via Diels-Alder Chemistry
Published on: August 25, 2016
Highly Efficient Rubber-to-Stainless Steel Bonding by Nanometer-Thin Cross-linked Polymer Brushes
Kristian Birk Buhl1, Rasmus Krag Møller2, Simon Heide-Jørgensen3
1Interdisciplinary Nanoscience Center (iNANO) and Carbon Dioxide Activation Center (CADIAC), Aarhus University, Gustav Wieds Vej 14, Aarhus C DK-8000, Denmark.
Grafting stainless steel with polymer brushes and modifying them with amines created a novel bonding solution. This solution achieved performance comparable to commercial agents, demonstrating strong adhesion and cohesive fracture.
Area of Science:
- Materials Science
- Polymer Chemistry
- Surface Engineering
Background:
- Developing advanced adhesive systems for bonding stainless steel (SS) is crucial for various industrial applications.
- Surface modification of materials with polymer brushes offers a pathway to enhance interfacial properties and adhesion.
- Existing bonding agents often require significant thickness and may not provide optimal cohesive-adhesive balance.
Purpose of the Study:
- To investigate the efficacy of polymer brushes grafted onto stainless steel surfaces as a novel bonding solution.
- To evaluate the impact of post-modification of polymer brushes with different amines on adhesive performance.
- To compare the performance of the developed bonding system with commercial agents.
Main Methods:
- Grafting stainless steel surfaces with poly(glycidyl methacrylate) (PGMA) and poly[2-(diethylamino)ethyl methacrylate] brushes.
- Post-modification of PGMA brushes using allylamine, diallylamine, and propylamine.
- Compression molding of modified surfaces with ethylene-propylene-diene M-class rubber and dicumyl peroxide, followed by vulcanization.
- Evaluation of bonding efficiency using peel experiments and calculation of fracture toughness and cohesive-to-adhesive fracture ratio (Ar).
Main Results:
- Polymer brushes grafted and modified with allylamine on SS surfaces demonstrated high bonding performance.
- Achieved full cohesive fracture with fracture toughness (15.4 ± 1.1 N mm⁻¹) and Ar (1.00 ± 0.01), matching commercial bonding agents.
- Cross-linking of polymer brushes via primary amine reactions significantly influenced fracture type and adhesive performance.
Conclusions:
- Surface-initiated grafting and post-modification of polymer brushes provide an effective strategy for creating high-performance adhesive interfaces on stainless steel.
- The developed bonding solution, particularly PGMA brushes modified with allylamine, offers a promising alternative to conventional thick bonding agents.
- Understanding the role of polymer brush structure and amine modification is key to optimizing adhesive joint performance and fracture behavior.
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