In papermaking, Polyethylene Oxide (PEO) is primarily used as a dispersant and retention aid. As a dispersing agent, high-molecular-weight PEO makes the pulp less likely to clump, slowing down water drainage and increasing the evenness of the paper sheet. As a retention aid, it helps to prevent valuable fine fibers and fillers from being lost during the paper formation process, thereby improving the overall quality and efficiency of the papermaking process.  

Function in Papermaking

• Dispersing Agent: 

  PEO's high molecular weight and solution viscosity create repulsion between fibers, which slows drainage and reduces fiber flocculation, improve the distribution of pulp,  leading to a more even paper sheet. 

• Retention Aid: 

  It acts as a bridging agent to capture and retain fine particles and fibers, preventing them from escaping with the water during the paper forming stage. 

Key Characteristics of PEO

• Non-ionic: PEO is a non-ionic polymer, which makes it suitable for various papermaking environments and applications. 

• Water-Soluble: It is readily soluble in water, forming viscous, slippery solutions that are easy to handle. 

• High Molecular Weight: This property is crucial for its role as a formation and retention aid.