Multifunctional porous aramids (aerogels) by efficient reaction of carboxylic acids and isocyanates

Leventis, Nicholas; Chidambareswarapattar, Chakkaravarthy; Mohite, Dhairyashil P.; Larimore, Zachary; Lu, Hongbing; Sotiriou‐Leventis, Chariklia

doi:10.1039/c1jm11472g

Cited by 88 publications

(71 citation statements)

References 24 publications

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“…polyurea [144], polyimides [145], polyamide [146], polyacrylonitriles [127], polyurethanes [147], polystyrene [148], polybenzoxazine [149], poly(dicyclopentadiene) [150], etc.…”

Section: Organic Aerogelsmentioning

confidence: 99%

Synthesis and biomedical applications of aerogels: Possibilities and challenges

Maleki

Durães

García‐González

et al. 2016

Advances in Colloid and Interface Science

296

192

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“…polyurea [144], polyimides [145], polyamide [146], polyacrylonitriles [127], polyurethanes [147], polystyrene [148], polybenzoxazine [149], poly(dicyclopentadiene) [150], etc.…”

Section: Organic Aerogelsmentioning

confidence: 99%

Synthesis and biomedical applications of aerogels: Possibilities and challenges

Maleki

Durães

García‐González

et al. 2016

Advances in Colloid and Interface Science

296

192

View full text Add to dashboard Cite

“…Aramid aerogels prepared by efficient reaction of carboxylic acids and isocyanates show a low thermal conductivity of 0.028 W·m −1 ·K −1 [214]. Based on this result, the authors further synthesized PI aerogels by ring-opening metathesis polymerization of a norbornene end-capped diimide [146].…”

Section: Applications Of Polymer/carbon-based Aerogelsmentioning

confidence: 99%

Polymer/Carbon-Based Hybrid Aerogels: Preparation, Properties and Applications

et al. 2015

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Aerogels are synthetic porous materials derived from sol-gel materials in which the liquid component has been replaced with gas to leave intact solid nanostructures without pore collapse. Recently, aerogels based on natural or synthetic polymers, called polymer or organic aerogels, have been widely explored due to their porous structures and unique properties, such as high specific surface area, low density, low thermal conductivity and dielectric constant. This paper gives a comprehensive review about the most recent progresses in preparation, structures and properties of polymer and their derived carbon-based aerogels, as well as their potential applications in various fields including energy storage, adsorption, thermal insulation and flame retardancy. To facilitate further research and development, the technical challenges are discussed, and several future research directions are also suggested in this review.

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“…Subsequently, it was reasoned that since the exceptional mechanical strength of X‐aerogels was attributed to the polymer coating, purely polymeric aerogels with the same nanostructure and interparticle connectivity of X‐aerogels would have similar mechanical properties . That hypothesis has been confirmed with purely polymeric aerogels from all major polymeric classes such as polyureas, polyurethanes, polyimides, and polyamides (KevlarTM‐like) . Indeed, new applications that were previously unrelated to aerogels, as in ballistic protection (armor), have now become feasible…”

Section: Introductionmentioning

confidence: 99%

Sound Transmission Loss Enhancement in an Inorganic‐Organic Laminated Wall Panel Using Multifunctional Low‐Density Nanoporous Polyurea Aerogels: Experiment and Modeling

et al. 2018

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Recently, the authors have reported an exceptional normal incidence sound transmission loss characteristic for a class of low density, highly porous, and mechanically strong polyurea aerogels. Herein, a laminated composite comprising the organic low-density aerogels bonded with an inorganic compound (e.g., gypsum materials) is considered to investigate the constrained damping effects of the aerogels on the airborne sound insulation behavior of the composite using the standard chamber-based diffuse sound field measurements. Huge improvement in the sound transmission loss is obtained due to the use of aerogel without a significant increase in the overall weight and thickness of the composite panel (e.g., more than 10 dB increase by reaching 40 dB sound transmission loss at 2 kHz after the implementation of only two 5 mm-thick aerogel layers at bulk densities 0.15 and 0.25 g cm À3 ). This uncommon behavior breaks the empirical "Mass Law" nature of the most conventional acoustic materials. In addition, an exact analytical time-harmonic plane-strain solution for the diffused wave propagation through the multilayered structure is provided using theories of linear elasticity and Biot's dynamic poroelasticity. The theoretical results are well supported by the experiments which can be utilized for the design of the future light-weight multifunctional composite structures.

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Multifunctional porous aramids (aerogels) by efficient reaction of carboxylic acids and isocyanates

Cited by 88 publications

References 24 publications

Synthesis and biomedical applications of aerogels: Possibilities and challenges

Synthesis and biomedical applications of aerogels: Possibilities and challenges

Polymer/Carbon-Based Hybrid Aerogels: Preparation, Properties and Applications

Sound Transmission Loss Enhancement in an Inorganic‐Organic Laminated Wall Panel Using Multifunctional Low‐Density Nanoporous Polyurea Aerogels: Experiment and Modeling

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