Climate chamber

humiditytemperaturestability

Product overview
The humidifier-attached chamber is an accessory for electrospinning systems designed to provide controlled relative humidity (RH) within the spinning environment. Precise RH management complements temperature and atmospheric control to influence solvent evaporation and fiber formation during nanofiber production.

Effect of relative humidity on electrospinning

• Low relative humidity: Faster solvent evaporation increases polymer concentration and viscosity, reduces chain extension under the electric field and can lead to premature solidification. These conditions may improve fiber alignment but require optimized RH to avoid defects.
• Higher relative humidity: Slower solvent evaporation and moisture uptake cause fiber swelling, altered solidification kinetics and potential beading or irregular morphologies. Elevated RH can change charge accumulation and surface conductivity at the collector, affecting deposition patterns.
• Control of morphology: Adjusting RH enables tuning of bead-on-string formation and fiber diameter by modifying solvent evaporation rates and viscoelastic breakup behavior for the same polymer formulation.

Benefits of integrating humidity control systems

• Improved fiber quality and membrane performance: Stable RH preserves uniform diameter and reduces beading, yielding smoother fiber surfaces and consistent membranes.
• Enhanced mechanical properties: Controlled humidity helps achieve reproducible strength and flexibility in nanofiber membranes.
• Optimal solvent evaporation: Managing RH optimizes solvent removal timing and fiber solidification, decreasing material waste.
• Process stability and scalability: Consistent environmental conditions improve reproducibility and facilitate scale-up to industrial production.
• Increased material versatility: RH control expands the usable range of polymers and blends for development and testing.
• Economic optimization: Reduced defects and waste improve yield, lower post-processing and troubleshooting costs.

Technical characteristics / specifications

• Accessory type: Humidifier-attached chamber compatible with electrospinning/electrospraying setups.
• Primary function: Control and regulation of relative humidity inside the spinning chamber.
• Process effects: Modifies solvent evaporation rate, polymer concentration and viscosity, fiber solidification timing, fiber diameter and morphology, bead formation and deposition patterns.
• Material properties effects: Influences charge accumulation, fiber alignment and mechanical properties (strength, flexibility) as well as membrane uniformity.
• Operational benefits: Enhances reproducibility, reduces material waste, improves scalability and increases versatility for testing different polymers and blends.
• Intended use: Integration with laboratory and production electrospinning equipment to optimize environmental conditions during nanofiber manufacturing.