A novel strategy and characteristics of PVA/citric acid cross-linked hydrophilic elastic sponge of cellulose based on medicinal herb residue

Yoon, Sohyun; Lim, Sohee; Byeon, Jihui; Choi, Hansol; Seo, Young-Kwon; Kim, Dae-Young

doi:10.1016/j.carbpol.2024.122404

Carbohydrate Polymers

2024

DOI: 10.1016/j.carbpol.2024.122404

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A novel strategy and characteristics of PVA/citric acid cross-linked hydrophilic elastic sponge of cellulose based on medicinal herb residue

Sohyun Yoon,

Sohee Lim,

Jihui Byeon

et al.

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2024

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Load‐Bearing Structure Inspired Cellulose‐Based Aerogel With High Resilience and Water Tolerance

Song,

Pan,

Wang

et al. 2024

Adv Funct Materials

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Cellulose‐based aerogels possess satisfactory sustainability, porosity, and resilience, which are promising materials to replace traditional petroleum‐based foams. However, the viscous aggregation formed between hydrophilic fibers and the pore collapse caused by weak support force pose challenges for their further applications. Here, a load‐bearing structure‐inspired cellulose‐based aerogel is innovatively developed with excellent elasticity and water tolerance through surface‐interface modulation. Specifically, cellulose and polyvinyl alcohol (PVA) form interwoven skeletons by non‐directional freeze drying. Crucially, the rhamnolipid surfactant assists in forming stable and uniform bubbles, and drives the regularization of frame structure during the freezing process, promoting the construction of refined mechanical structures. Besides, the interfacial enhancement by esterification reaction of citric acid and the encapsulation by hydrophobic silane via chemical vapor deposition endow aerogels with better resilience and water tolerance. The as‐prepared aerogels can withstand intensive compression cycle tests and possess the ability to rebound over 10 times underwater. Even after 12 h wet treatment, the strain and stress loss respectively decrease by ≈55.5% and ≈14% compare with the initial unregulated aerogels after 500 cycles of 80% compression. Surprisingly, they have excellent cushioning performance beyond expanded polystyrene (EPS) and expanded polyethylene (EPE) in simulated road transportation packaging applications, indicating their potential in new‐generation cushioning materials.

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Load‐Bearing Structure Inspired Cellulose‐Based Aerogel With High Resilience and Water Tolerance

Song,

Pan,

Wang

et al. 2024

Adv Funct Materials

View full text Add to dashboard Cite

show abstract

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A novel strategy and characteristics of PVA/citric acid cross-linked hydrophilic elastic sponge of cellulose based on medicinal herb residue

Cited by 1 publication

References 41 publications

Load‐Bearing Structure Inspired Cellulose‐Based Aerogel With High Resilience and Water Tolerance

Load‐Bearing Structure Inspired Cellulose‐Based Aerogel With High Resilience and Water Tolerance

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