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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

Soy proteins as environmentally friendly sizing agents to replace poly(vinyl alcohol).

Lihong Chen¹, Narendra Reddy, Yiqi Yang

¹Key Laboratory of Science and Technology of Eco-Textiles, Ministry of Education, Donghua University, Shanghai, China, 200051.

Environmental Science and Pollution Research International

|March 29, 2013

Summary

Soy protein offers an eco-friendly alternative to poly(vinyl alcohol) (PVA) for textile sizing. This biodegradable option enhances fabric strength and abrasion resistance, reducing industrial water pollution from textile processing.

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Area of Science:

Materials Science
Environmental Science
Textile Engineering

Background:

Poly(vinyl alcohol) (PVA) is a common textile sizing agent, but its poor biodegradability contributes significantly to industrial water pollution.
Textile processing, particularly sizing and desizing, consumes substantial water and generates considerable effluent.
Existing biodegradable alternatives have not matched PVA's performance in synthetic fiber applications.

Purpose of the Study:

To investigate soy proteins as a sustainable and cost-effective replacement for PVA in textile warp sizing.
To evaluate the performance and biodegradability of soy protein-based textile sizes.
To assess the environmental impact of using soy protein sizes compared to PVA.

Main Methods:

Soy proteins were utilized as a textile sizing agent for polyester and polyester/cotton materials.
Strength and abrasion resistance of sized materials were compared to those sized with commercial PVA.
Biodegradability was assessed using the biochemical oxygen demand (BOD) / chemical oxygen demand (COD) ratio and analysis of nitrogen release.

Main Results:

Soy protein-sized textiles exhibited superior improvements in strength and abrasion resistance compared to PVA-sized textiles.
Soy protein size demonstrated significantly higher biodegradability with a BOD/COD ratio of 0.57, versus 0.01 for PVA.
Nitrogen release from soy proteins did not negatively affect biodegradability in activated sludge.

Conclusions:

Soy proteins present a viable, high-performance, and biodegradable alternative to PVA for textile sizing.
The adoption of soy protein sizes can lead to substantial environmental benefits by reducing water pollution in the textile industry.
This research highlights the potential for sustainable material innovation in textile manufacturing.