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Updated: Jun 12, 2025

Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing

Evaluation of the Curing of Adhesive Systems by Rheological and Thermal Testing

Published on: July 3, 2020

Salicylhydroxamic acid containing structural adhesive.

Md Saleh Akram Bhuiyan¹, Kan Wang¹, Fatemeh Razaviamri¹

¹Department of Biomedical Engineering, Michigan Technological University 1400 Townsend Drive Houghton Michigan 49931 USA bplee@mtu.edu.

RSC Applied Polymers

|September 23, 2024

Summary

This summary is machine-generated.

Salicylhydroxamic acid (SHAM) shows promise as a new adhesive molecule for structural adhesives. SHAM-based polymers exhibit strong adhesion to various surfaces, outperforming existing glues, though water stability needs further research.

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Area of Science:

Materials Science
Polymer Chemistry
Adhesion Science

Background:

Development of novel adhesive molecules is crucial for advanced structural applications.
Salicylhydroxamic acid (SHAM) is explored as a potential building block for new adhesives.
Understanding hydrogen bonding's role in polymer cohesion and adhesion is key.

Purpose of the Study:

To investigate the feasibility of using salicylhydroxamic acid (SHAM) in structural adhesive design.
To evaluate the adhesive strength and stability of SHAM-containing polymers.
To compare the performance of SHAM-based adhesives against existing adhesive technologies.

Main Methods:

Synthesis of SHAM-containing polymers with hydroxyethyl methacrylate (HEMA) or methoxyethyl acrylate (MEA) backbones.
Incorporation of polyvinylidene fluoride (PVDF) to enhance cohesive properties via hydrogen bonding.
Measurement of lap shear adhesion strength (S_adh) on glass, metal, and polymer substrates.
Assessment of adhesive joint stability under dry and humid conditions.

Main Results:

SHAM-based adhesives achieved lap shear adhesion strength (S_adh) exceeding 0.9 MPa on diverse surfaces.
Formulations with higher SHAM content reached S_adh values up to 4.8 MPa.
HEMA-based adhesives showed strong adhesion due to inherent hydrogen bonding capabilities.
Adhesives exhibited an 80% decrease in S_adh after 48 hours in water, indicating sensitivity to moisture.

Conclusions:

SHAM is a viable new molecule for developing high-performance structural adhesives.
Hydrogen bonding plays a critical role in the cohesive and adhesive properties of these materials.
SHAM-containing adhesives demonstrate superior performance compared to catechol-based adhesives and epoxy glue, despite water sensitivity.