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Updated: Apr 19, 2026
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Solvent Bonding for Fabrication of PMMA and COP Microfluidic Devices
Published on: January 17, 2017
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Bonding metals to poly(methyl methacrylate) using aryldiazonium salts
Omar Alageel1, Mohamed-Nur Abdallah2, Zhong Yuan Luo3
1Faculty of Dentistry, McGill University, Montreal, QC, Canada; College of Applied Medical Sciences, King Saud University, Riyadh, Saudi Arabia.
Summary
A new diazonium chemistry method creates strong chemical bonds between metal alloys and poly(methyl methacrylate) (PMMA), significantly improving dental device durability and preventing mechanical failures.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Dental Materials
Background:
- Dental prostheses often fail due to weak mechanical interlocking between metal alloys and polymers like poly(methyl methacrylate) (PMMA).
- Current bonding methods lack chemical adhesion, leading to device failure.
Purpose of the Study:
- To develop a novel method for creating robust chemical bonds between metal alloys and PMMA for dental applications.
- To enhance the mechanical integrity of dental devices by improving alloy-polymer adhesion.
Main Methods:
- A two-step approach using diazonium chemistry was employed.
- Aryldiazonium salts were grafted onto metal surfaces (primer step).
- An optimized adhesive step achieved covalent bonding with PMMA, analyzed by XPS.
Main Results:
- X-ray photoelectron spectroscopy confirmed successful polymer coating on treated metal surfaces.
- Bond strength between PMMA and treated titanium increased 5.2-fold.
- Bond strength between PMMA and treated stainless steel increased 2.5-fold (p<0.05).
Conclusions:
- Diazonium chemistry provides an effective strategy for strong chemical bonding between alloys and PMMA.
- This technique significantly enhances the mechanical properties of dental devices, reducing failure rates.
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