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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 6. — Effects of transverse stretching ratio on properties of ePTFE membrane. (A) Schematic diagram of transverse stretching of ePTFE membrane. The transverse stretching ratio is defined as L_2/L₁. Because of the limitation of the machine space, the maximum value of L_2/L₁ was 10. According to our experience, when the transverse stretching ratio was <2, an even membrane could not be obtained, and thus the transverse stretching ratio was between 2 and 10. (B) Effect of transverse stretching ratio on membrane thickness. (C) Effect of transverse stretching ratio on membrane elongation and strength.