Alkali Degradation

Molecular Alteration

Fibres lose tensile strength as internal chain scission proceeds through the hydro-elimination of oxygen atoms. Such damage lowers the degree of polymerization and leaves the material susceptible to further oxidative attack during subsequent bleaching. Laboratory testing verifies this loss by comparing the fluid flow rate of dissolved samples against established viscosity standards.

Low viscosity readings confirm that polymer chains have broken down beyond acceptable limits for durability.

Production Boundary

Finishing lines must regulate flow rates and dwell times to ensure the reaction hits the desired swelling effect without damaging the substrate. Operators monitor the concentration of the circulating liquor to prevent over-treatment during continuous processing cycles. When moisture content remains high in the fabric before entry, the reaction intensity increases unpredictably.

Precise timing keeps the fibre within the threshold where improved dye uptake outweighs physical impairment.

Material Outcome

Reduced abrasion resistance serves as a primary marker for over-exposed goods destined for garment manufacture. Textiles failing this chemical stability test crack under mechanical stress during industrial washing or dry tumble cycles. Premature fabric failure stems from this internal molecular thinning that escapes casual visual inspection.

Internal structural fatigue persists as a permanent condition once the chemical equilibrium shifts too far toward degradation.