Demand for Gas Separation Membranes in EU market was valued at USD 656.00 Million in 2025. Sales are expected to reach USD 699.30 Million in 2026 and USD 1.33 Billion by 2036. Polyimide is poised to lead by Product Type with 36.0% share in 2026 and CO₂ Separation is estimated to command by Application with 27.5% share in 2026.