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. 2023 Jun 2;10:rbad056. doi: 10.1093/rb/rbad056

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© The Author(s) 2023. Published by Oxford University Press.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 5. — Effects of longitudinal stretching ratio on properties of ePTFE membrane. (A) Schematic diagram of longitudinal stretching of ePTFE membrane. The first four rollers had the same angular velocity denoted as ω₁, while the last one had a larger velocity denoted as ω₂. The longitudinal stretching ratio is defined as ω_2/ω₁. (B) Effect of longitudinal stretching ratio on membrane thickness. (C) Effect of longitudinal stretching ratio on ePTFE membrane elongation and strength.