Abstract
This present study describes the synthesis of Lignocellulose-derived aerogel (LA) with adjustable elasticity via a facile sol-gel polymerization using liquefied wood as the precursor, followed by freeze-drying process. The morphology, chemical structure, density, shrinkage, thermal degradation and mechanical properties of LA with different amounts of reactants were compared. The resulting LA possessed medium–high density of ~ 1.0 g/cm3 and suitable mechanical properties, which was attributed to the adjustment of anhydrous ethanol and hexamethylenetetramine (HMTA) dosages. The prepared LA with HMTA dosage in the range of 3 ~ 5 wt% have good thermal stability without significant change. Additionally, 5 wt% of HMTA dosage promoted the compressive strength of LA to 3.26 MPa, while the appropriate amount of anhydrous ethanol (4 ml) enhanced the compression rebound rate of LA to 94.3% under 50% compressive strain. The high compressive strength, good thermal stability, satisfied elasticity and adjustability as well as the simple fabrication enable the LA to be utilized in fields with different cushioning requirements.
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Data availability
The data that support the findings of this study are available from the corresponding author, DL, upon reasonable request.
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This work has been granted by National Natural Science Foundation of China (NO 31870564).
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The authors are grateful for the financial supports from National Natural Science Foundation of China (NO 31870564).
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DL and XM contributed to the study conception and design. BS, YQ and LW wrote the main manuscript. All authors contributed data collection, analysis, writing and reviewing of the manuscript.
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Sun, B., Qiu, Y., Wang, L. et al. Lignocellulose-derived aerogel from liquefied wood with suitable compression resilience: synthesis and characterization. Cellulose 30, 4485–4497 (2023). https://doi.org/10.1007/s10570-023-05130-x
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DOI: https://doi.org/10.1007/s10570-023-05130-x