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Bio-Based Adhesives Formulated from Tannic Acid, Chitosan, and Shellac for Packaging Materials
1Department of Textiles, Graphic Arts and Design, Faculty of Natural Sciences and Engineering, University of Ljubljana, 1000 Ljubljana, Slovenia.
Polymers
|March 11, 2023
Summary
This study developed effective bio-based adhesives from tannic acid, chitosan, and shellac for packaging. These sustainable adhesives show promising results, especially on invasive plant papers, offering enhanced strength and stability.
Area of Science:
- Materials Science
- Sustainable Chemistry
- Forestry and Paper Science
Background:
- Development of sustainable packaging materials is crucial for environmental protection.
- Invasive plant species pose ecological and economic challenges.
- Need for eco-friendly adhesives in the packaging industry.
Purpose of the Study:
- To develop and evaluate bio-based adhesives for packaging paper applications.
- To utilize invasive plant species like Japanese Knotweed and Canadian Goldenrod for paper production.
- To assess the performance of novel adhesive formulations.
Main Methods:
- Formulation of bio-based adhesives using tannic acid, chitosan, and shellac.
- Testing adhesives on commercial paper and paper from invasive plants.
- Evaluation of adhesive properties including viscosity, adhesive strength, tensile strength, peel strength, and thermal stability.
Main Results:
- Adhesives with tannic acid and shellac exhibited optimal viscosity and adhesive strength.
- Tannic acid and chitosan adhesives improved tensile strength by 30% compared to commercial adhesives.
- Pure shellac was the most durable adhesive for invasive plant papers due to their porous structure.
Conclusions:
- Bio-based adhesives demonstrate significant potential for packaging applications.
- The formulation and application of these adhesives can be optimized based on paper substrate properties.
- Utilizing invasive plants for paper and employing bio-based adhesives offers a sustainable solution.
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