High-performance water-borne fluorescent acrylic-based adhesive: synthesis and application

Area of Science:

• Polymer Chemistry
• Materials Science
• Adhesives Technology

Background:

• Water-borne adhesives are crucial for cellulose-based materials, but durability, handling, and strength are significant challenges.
• Existing adhesives often face limitations in long-term storage and application flexibility.

Purpose of the Study:

• To develop novel water-borne adhesives based on acrylic acid copolymers for cellulose-based materials.
• To evaluate the performance, thermal stability, and unique properties of the synthesized adhesives.

Main Methods:

• Synthesis of three water-borne adhesives: poly(1-vinyl-2-pyrrolidone-co-acrylic acid), poly(acrylonitrile-co-acrylic acid), and poly(1-vinyl-2-pyrrolidone-co-acrylonitrile-co-acrylic acid).
• Characterization using Fourier-transform infrared spectroscopy, thermogravimetric analysis, X-ray diffraction, gel permeation chromatography, and universal testing machine.
• Evaluation of lap shear strength according to ASTM D-906.

Main Results:

• The synthesized adhesives exhibit excellent thermal stability up to 300 °C.
• Poly(1-vinyl-2-pyrrolidone-co-acrylonitrile-co-acrylic acid) demonstrated superior lap shear strength compared to commercial adhesives.
• Adhesives are fluorescent under UV light, enabling detection of fractured joints and anti-counterfeiting applications.

Conclusions:

• The developed acrylic-acid based water-borne adhesives offer improved performance for cellulose materials.
• The synthesized polymers provide long-term storage stability in powder form and easy formulation in water.
• Fluorescent properties enhance utility for structural integrity analysis and security applications.