How to test acrylic fabric for resistance to fungal growth in humid climates?

Testing acrylic fabric for resistance to fungal growth in humid climates is essential to ensure durability and hygiene. Here’s a step-by-step guide:

1. Prepare Samples: Cut identical acrylic fabric swatches and sterilize them to eliminate pre-existing microbes.

2. Create Humid Conditions: Place samples in a controlled humidity chamber (85-90% RH) at 25-30°C to simulate tropical climates.

3. Inoculate with Fungi: Introduce common mold spores (e.g., Aspergillus, Penicillium) onto the fabric surfaces.

4. Monitor Growth: Observe samples weekly for 4-6 weeks, documenting fungal colonization using visual inspection or microscopy.

5. Evaluate Results: Compare treated/untreated fabrics or assess anti-fungal coatings’ effectiveness.

For accurate results, follow ASTM G21 or ISO 846 standards. Regular testing ensures acrylic fabrics remain mold-resistant in humid environments.