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Preparation and Testing of Plant Seed Meal-based Wood Adhesives

Preparation and Testing of Plant Seed Meal-based Wood Adhesives

Published on: March 5, 2015

A separable paper adhesive based on the starch-lignin composite.

Qin Wu¹, Weilong Shao¹, Nannan Xia¹

¹State Key Laboratory of Biobased Material and Green Papermaking, Key Laboratory of Pulp & Paper Science and Technology of Shandong Province/Ministry of Education, Qilu University of Technology (Shandong Academy of Sciences), Jinan, 250353, China.

Carbohydrate Polymers

|December 13, 2019

Summary

A novel bio-based paper adhesive was developed using lignin grafted onto starch. This eco-friendly adhesive is water-soluble, improving waste paper recycling and protecting equipment.

Keywords:

Adhesive Lignin Recycling of waste paper Starch

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Last Updated: Jan 2, 2026

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Area of Science:

Materials Science
Green Chemistry
Polymer Chemistry

Background:

Traditional paper adhesives pose challenges in waste paper recycling due to their difficult removal from paper and equipment.
This hinders the efficiency and sustainability of paper recycling processes.

Purpose of the Study:

To develop a novel, water-based, bio-derived paper adhesive with improved recyclability.
To investigate the use of hyperbranched polyester (H102) as a dispersant and lignin-grafted starch as the adhesive material.

Main Methods:

Graft copolymerization of lignin onto a starch backbone using free radical initiation.
Optimization of reaction conditions including water/starch ratio, dispersant/starch ratio, initiator/starch ratio, and pH.
Characterization using FT-IR, UV-vis, TG, XRD, and rheological analysis.

Main Results:

Optimal adhesion properties were achieved under specific conditions: m(H2O)/m(St)=15:1, m(SLS)/m(St)=0.15:1, m(APS)/m(St)=0.02:1, and pH=4 at 80°C for 6h.
The addition of hyperbranched polyester (H102) enhanced adhesive stability and extended shelf life.
The developed adhesive demonstrated water solubility upon heating, facilitating easier removal.

Conclusions:

A novel, bio-based paper adhesive was successfully synthesized via grafting lignin onto starch.
The new adhesive offers improved performance and significantly enhances the recovery and recycling of waste paper.
This advancement contributes to more sustainable practices in the paper industry.