Additives in fibers and fabrics

Area of Science:

• Textile Chemistry
• Materials Science
• Polymer Chemistry

Background:

• Textile fibers, both natural and synthetic, are processed with numerous chemical additives and can contain residual contaminants from manufacturing.
• These substances are added to impart specific properties like color, durability, flame resistance, and water repellency.
• The complexity of chemical treatments increases significantly when fibers are converted into fabrics, with many agents applied during finishing stages.

Purpose of the Study:

• To comprehensively review the types and potential hazards of chemical additives and contaminants present in textile fibers and fabrics.
• To identify specific chemical agents used in textile manufacturing and finishing that may pose risks to consumers or the environment.
• To highlight the chemical nature of common finishing treatments, such as durable press finishes, and their associated risks.

Main Methods:

• Literature review of chemical additives and contaminants in textile fibers and fabrics.
• Analysis of chemical compositions and reaction mechanisms of common textile finishing agents.
• Identification of potential hazards associated with residual chemicals and treatment byproducts.

Main Results:

• Synthetic fibers contain residual catalysts, deactivators, tracers, delustrants (e.g., TiO2), and organic additives (antistats, flame retardants).
• Fabric finishing involves numerous temporary agents (lubricants, sizing agents) and permanent ones (dyes, pigments, durable press agents).
• Durable press treatments, utilizing N-methylolated amides, pose risks due to nitrogenous bases and formaldehyde release, with residual catalysts also present.

Conclusions:

• Textile materials contain a wide array of chemical additives and contaminants throughout their lifecycle.
• Finishing processes, particularly durable press treatments, introduce chemicals that can pose potential health hazards.
• Further investigation into the safety and environmental impact of specific textile chemical treatments is warranted.