Thermogravimetric Analysis of Non-Cellulosic Degradation Kinetics in Bast Fibres
Non-cellulosic thermogravimetric kinetic analysis quantifies binder levels to prevent hackling yield losses and wet-spinning breakage.
Iso 11358
Thermal Protocol
Thermogravimetric analysis records mass reduction as a specimen undergoes controlled heating within an inert or oxidizing atmosphere. Scientists use iso 11358 to isolate the precise temperature points where polymer degradation begins or where volatile components release from a sample. This method defines the relationship between the sample weight and the thermal energy applied by the furnace.
It operates across a specified temperature range determined by the chemistry of the material under inspection.
Degradation Metric
Laboratories perform this assessment during the finishing phase of linen production to verify the thermal stability of synthetic binders or chemical additives applied to the cloth surface. The equipment measures the precise moment a coating fails under heat, ensuring the integrity of the fabric before export. Flax yarns and woven textiles undergo testing to identify impurities or residual chemical agents that compromise quality.
High precision balance mechanisms detect changes in milligram increments as the temperature ramps upward according to the programmed profile. Analysts monitor the curve of the resulting plot to locate onset temperatures and reaction peaks. These data points confirm whether the chemical treatment meets the stability threshold required for specific industrial environments.
Operational Boundary
Instruments following this standard generate quantitative data regarding mass loss but omit structural characterization of the solid residue left behind after the heating cycle completes. The method applies exclusively to changes that result in a measurable shift in gravity as gases evolve from the solid phase. External factors like gas flow rates and crucible geometry influence the measured output.
Accuracy depends on the calibration of the sensor and the stabilization of the internal atmosphere. Reproducible results depend on the strict maintenance of the heating rate throughout the entire duration of the test.