Dissolution Rate
The speed and chemical pathway by which the natural plant gums that bind flax fibers together dissolve in an alkaline solution determine the efficiency of the degumming process. Pectin dissolution kinetics describes this chemical reaction rate, which is influenced by temperature, pH, and the concentration of the scouring agents. If the reaction is too slow, the technical bundles remain stiff and cannot be separated into fine strands during spinning.
This kinetic behavior is studied to optimize the boiling-off phase of raw linen yarn.
Temperature Control
Raising the temperature of the scouring bath accelerates the reaction rate, which reduces the time required to achieve the target fiber separation. However, if the process is allowed to run too fast or for too long, the caustic solution can attack the cellulose structure of the flax fibers themselves, which leads to a loss of tensile strength. Technicians monitor the bath composition and the treatment time to balance the removal of pectin against the preservation of fiber integrity.
The processing log records these parameters for each production batch.
Fiber Strength
Proper management of the kinetic pathway ensures a soft handle in the finished linen fabric. The pectin dissolution kinetics governs the physical softness and dyeing receptivity of the finished cloth.
