Effects of freeze-drying conditions on aerogel properties

Simón-Herrero, Carolina; Caminero-Huertas, Silvia; Romero, Amaya; Valverde, J.L.; Sánchez-Silva, L.

doi:10.1007/s10853-016-0148-5

Cited by 54 publications

(30 citation statements)

References 28 publications

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“…While the pressure drops, the temperature rises to eliminate any unfrozen or bound water deposits in the material [ 17 ]. In most circumstances, the ultimate goal of the final drying is to achieve a water content of 1 to 4% [ 208 ]. However, the sublimation rate during FD is generally observed to be prolonged.…”

Section: The Manufacture Of Aerogelsmentioning

confidence: 99%

Valorization of Starch to Biobased Materials: A Review

et al. 2022

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Many concerns are being expressed about the biodegradability, biocompatibility, and long-term viability of polymer-based substances. This prompted the quest for an alternative source of material that could be utilized for various purposes. Starch is widely used as a thickener, emulsifier, and binder in many food and non-food sectors, but research focuses on increasing its application beyond these areas. Due to its biodegradability, low cost, renewability, and abundance, starch is considered a “green path” raw material for generating porous substances such as aerogels, biofoams, and bioplastics, which have sparked an academic interest. Existing research has focused on strategies for developing biomaterials from organic polymers (e.g., cellulose), but there has been little research on its polysaccharide counterpart (starch). This review paper highlighted the structure of starch, the context of amylose and amylopectin, and the extraction and modification of starch with their processes and limitations. Moreover, this paper describes nanofillers, intelligent pH-sensitive films, biofoams, aerogels of various types, bioplastics, and their precursors, including drying and manufacturing. The perspectives reveal the great potential of starch-based biomaterials in food, pharmaceuticals, biomedicine, and non-food applications.

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Section: The Manufacture Of Aerogelsmentioning

confidence: 99%

Valorization of Starch to Biobased Materials: A Review

et al. 2022

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“…The size, structure and morphology of aerogel pores can be adjusted by changing the precursor material, its concentration or mixing it with other particles. The mechanical properties of aerogel have been reported to be affected by two main factors: precursor material and preparation method [ 48 ]. Yang et al [ 49 ] reported that cellulose enhanced the mechanical properties of the aerogel, and the ratio of alginate cellulose had a significant effect on the mechanical properties.…”

Section: Biopolymer-based Aerogelsmentioning

confidence: 99%

A Review on Revolutionary Natural Biopolymer-Based Aerogels for Antibacterial Delivery

et al. 2020

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A biopolymer-based aerogel has been developed to become one of the most potentially utilized materials in different biomedical applications. The biopolymer-based aerogel has unique physical, chemical, and mechanical properties and these properties are used in tissue engineering, biosensing, diagnostic, medical implant and drug delivery applications. Biocompatible and non-toxic biopolymers such as chitosan, cellulose and alginates have been used to deliver antibiotics, plants extract, essential oils and metallic nanoparticles. Antibacterial aerogels have been used in superficial and chronic wound healing as dressing sheets. This review critically analyses the utilization of biopolymer-based aerogels in antibacterial delivery. The analysis shows the relationship between their properties and their applications in the wound healing process. Furthermore, highlights of the potentials, challenges and proposition of the application of biopolymer-based aerogels is explored.

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“…It can be observed in the obtained SEM figures that there are some differences in the morphology; CNCbased aerogel is spherical in shape while the CNFbased aerogel is rice-shaped, which results from the longer filament of CNF compared to CNC. The mechanical properties of aerogels have been reported to be affected by two main factors: precursor material and preparation method 46 . Cellulose is used to enhance the mechanical properties of many hybrid aerogels.…”

Section: Properties Of Cellulose-based Aerogelsmentioning

confidence: 99%

Antibacterial cellulose-based aerogels for wound healing application: A review

et al. 2020

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Aerogels have been steadily developed since its first invention to become one of the most promising materials for various medical and non-medical applications. It has been prepared from organic and inorganic materials, in pure forms or composites. Cellulose-based aerogels are considered one of the promising materials in biomedical applications due to their availability, degradability, biocompatibility and non-cytotoxicity compared to conventional silica or metal-based aerogels. The unique properties of such materials permit their utilization in drug delivery, biosensing, tissue engineering scaffolds, and wound dressing. This review presents a summary of aerogel development as well as the properties and applications of aerogels. Herein, we further discuss the recent works pertaining to utilization of cellulose-based aerogels for antibacterial delivery.

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Effects of freeze-drying conditions on aerogel properties

Cited by 54 publications

References 28 publications

Valorization of Starch to Biobased Materials: A Review

Valorization of Starch to Biobased Materials: A Review

A Review on Revolutionary Natural Biopolymer-Based Aerogels for Antibacterial Delivery

Antibacterial cellulose-based aerogels for wound healing application: A review

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