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Hygroscopicity and Osmosis in Plastics โ Are They the Same?
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Hygroscopicity vs. Osmosis in Plastics โ Whatโs the Difference?
Not all plastics absorb moisture! Hygroscopic plastics (e.g., ABS, PA, PET) pull water into their structure, which can cause defects during processing if not dried properly. Non-hygroscopic plastics (PVC, PE) do not absorb moisture but can act as barriers against osmosis.
๐ก Key differences:
โ๏ธ Hygroscopicity โ water absorption into plastic granules.
โ๏ธ Osmosis โ water passing through a material.
โ๏ธ PVC is not hygroscopic but can reduce osmosis.
