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. 2023 Mar 21;10:rbad026. doi: 10.1093/rb/rbad026

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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 3. — Preparation and mechanical performance CS-PPPDA&PPP-PA gels. (A) FT-IR spectra to show the interactions between CS and PA. (B) General observation of strong, tough and elastic CS-PPPDA&PPP-PA gel. (C) Compressive strength of CS-PPPDA&PPP-PA gel with different PA concentration. (D) Loading–unloading compression tests and the corresponding calculated toughness. (E) Fracture strain of CS-PPPDA&PPP-PA gel with different PA concentration. (F) Elasticity tests.