The morphologies and sizes of cellulose hydrogel were observed by scanning electron microscope (SEM, H-7650, Hitachi, Japan). Fourier transform infrared spectra (FTIR) of the samples were collected with a FTIR spectrometer (Thermo Electron Instruments Co., Ltd., USA) in the frequency range of 4000–400 cm−1 with a total of 32 scans and resolution of 4 cm−1. The thermal stability of the cellulose hydrogels was determined with a thermal gravimetric analyzer (NETZSCH TG 209F1 Iris). The element content of hydrogel was obtained by Energy Dispersive Spectroscopy (EDS, S–3000 N, Hitachi, Japan). The crystalline structures of tunic, tunic hydrogel and PTC hydrogel were analyzed by X-ray diffraction (XRD). Atomic force microscope (AFM, Bruker Dimension ico) was used to measure the root-mean-square (RMS) surface roughness (Rq) of tunic, tunic hydrogel and PTC hydrogel. The mechanical properties of different scaffolds were studied by compression test with LS1 materials testing system (AMETEK, America), compressive ramp up to 80% strain and strain rate of 10% per minute, preload of 0.05 N was used.
Ls1 materials testing system
Manufactured by Ametek
The LS1 materials testing system is a lab equipment product designed for mechanical testing applications. It provides accurate and reliable data on the physical properties and performance characteristics of various materials. The LS1 system is capable of conducting a range of standard test methods to assess the strength, durability, and behavior of materials under controlled conditions.
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Lab products found in correlation
2 protocols using ls1 materials testing system
1
Characterization of Cellulose Hydrogel Scaffolds
2
Characterization of Ti2C Cryogels
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The micro-structures of the cryogels were observed using Scanning Electron Microscopy (SEM, S-3000N, Hitachi, Japan) and the Titanium distribution on the cryogel was further detected via energy-dispersive X-ray spectroscopy (SEM-EDX, Hitachi, Japan). The conductivity of the Ti2C-cryogels was measured using a Digital Four-Point Probe (Suzhou Jingge Electronic Co. LTD, China). For the mechanical properties of different cryogels, all samples were synthesized with 4~6 mm height and 10 mm diameter. The cycling compressive test was executed up to 60% sample deformation at a compressive speed of 10 mm/min for 100 cycles by LS1 materials testing system (AMETEK, America). The stress-strain curves and modulus of different cryogels were also measured in single continued compressive at the same speed.
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