Novel and simple design of nanostructured, super-insulative and flexible hybrid silica aerogel with a new macromolecular polyether-based precursor

Rezaei, Sasan; Zolali, Ali M.; Jalali, Amirjalal; Park, Chul

doi:10.1016/j.jcis.2019.11.072

Cited by 42 publications

(29 citation statements)

References 73 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In recent years, because of its high efficiency, ring-opening polymerization has become a prominent research area. [65][66][67][68][69][70] In particular, the method is used in the synthesis of polyester materials, including β-butyrolactone, γ-butyrolactone, ε-capro-lactone, etc. 71,72 Accordingly, some selenium-containing polymers were also prepared in this way with Se monomers.…”

Section: Stepwise Polymerization Of Se Monomersmentioning

confidence: 99%

Organoselenium chemistry-based polymer synthesis

Zhang

Chen

et al. 2020

Org. Chem. Front.

View full text Add to dashboard Cite

show abstract

Section: Stepwise Polymerization Of Se Monomersmentioning

confidence: 99%

Organoselenium chemistry-based polymer synthesis

Zhang

Chen

et al. 2020

Org. Chem. Front.

View full text Add to dashboard Cite

show abstract

“…These materials reach thermal conductivities around 10–20 mW/mK and have a wide variety of applications [ 9 , 13 ]. Nevertheless, their long and multi-step synthesis process, high production costs, poor mechanical properties and health issues (i.e., irritant to the eyes, skin, respiratory tract, and digestive system) limit their practical applications and mass production [ 1 , 6 , 16 , 17 , 18 ]. Another type of aerogels that have also attracted attention are those based on resorcinol–formaldehyde (RF).…”

Section: Introductionmentioning

confidence: 99%

“…Combining the advantages of their dual nature, these materials offer a major versatility in shapes and sizes (i.e., films, monoliths, etc.) and a wider range of interesting properties in the insulation field (e.g., flexibility, transparency or adsorptive characteristics) [ 16 , 20 , 21 , 22 ]. However, to maintain a remarkable insulating performance in these hybrid gels, the optimal characteristics (i.e., structure and low density) are reached by supercritical drying.…”

Section: Introductionmentioning

confidence: 99%

Hybrid RF-Si Xerogels: A Cost-Effective Proposal for Insulator Materials

et al. 2021

View full text Add to dashboard Cite

Hybrid xerogels RF/Si were synthesized by controlling the chemical variables involved in the polymerization process (i.e., molar ratios, dilution ratio, catalysts, etc.) and evaluated as insulator materials. Higher insulating performances were recorded for these hybrids compared with their counterparts made from only one of their components (i.e., RF or Si xerogels with similar porous characteristics). The analysis of chemical and structural features correlated with heat transfer methods was useful in understanding the sum of contributions involved in the thermal conductivity of RF/Si xerogels. Variables such as roughness and tortuosity can be used to improve the performance of xerogels from a different perspective. In this way, thermal conductivities of 25 mW/mK were achieved without lengthy process steps or special drying methods. Knowledge of material design and the use of microwave heating during the synthesis allowed us to approach a simple and cost-effective process. These results suggest that the hybrid materials developed in this work are a good starting point for the future of the massive production of insulation materials.

show abstract

“…Various kinds of inorganic aerogel have been developed and commercialized for aerospace industry, 3 structural insulation, 4 electrochemistry 5 . However, inorganic aerogels often suffer brittleness, which limits their application 6,7 . On the other side, organic aerogels, such as resorcinol‐formaldehyde (RF) aerogel, 8 polyimide aerogel, 9 can overcome the brittleness issue of inorganic aerogels, and possess good flexibility.…”

Section: Introductionmentioning

confidence: 99%

“…aerogels often suffer brittleness, which limits their application. 6,7 On the other side, organic aerogels, such as resorcinol-formaldehyde (RF) aerogel, 8 polyimide aerogel, 9 can overcome the brittleness issue of inorganic aerogels, and possess good flexibility. But high cost, flammable and environmental problems make them less attractive.…”

mentioning

confidence: 99%

Fire retardant cellulose aerogel with improved strength and hydrophobic surface by one‐pot method

Shahzadi

Sun

et al. 2020

J of Applied Polymer Sci

View full text Add to dashboard Cite

Bio‐based materials with multifunctional performance are getting immense attention nowadays for their environment friendly and renewable character. Inspired by toughening effect of graphene nanosheets and borate chemistry, a simple in‐situ borate crosslinking in water and freeze‐drying method was employed to fabricate a fire retarded bio‐based aerogel. The structure of the material was evaluated and analysis by SEM, XRD, FTIR, Raman and XPS. Importantly, the bio‐based aerogel has improved strength and adsorption properties due to unique structure. The compressive strength of rGO(reduced graphene oxide) + CMC (carboxymethyl cellulose) aerogel could reach 128 ± 2.1 kPa which is five times that of neat CMC aerogel. The bio‐based aerogel can load more than 2500 times of self‐weight. The adsorption capacity for organic solvents and oil of rGO+CMC aerogel is also greatly improved by a little rGO (1%) introducing due to its unique porous structure and hydrophobic nature of rGO. Additionally, rGO+CMC aerogel is also found fire resistant with relatively low thermal conductivity due to the borate and GO introduction.

show abstract

Novel and simple design of nanostructured, super-insulative and flexible hybrid silica aerogel with a new macromolecular polyether-based precursor

Cited by 42 publications

References 73 publications

Organoselenium chemistry-based polymer synthesis

Organoselenium chemistry-based polymer synthesis

Hybrid RF-Si Xerogels: A Cost-Effective Proposal for Insulator Materials

Fire retardant cellulose aerogel with improved strength and hydrophobic surface by one‐pot method

Contact Info

Product

Resources

About