2016
DOI: 10.1016/j.compositesb.2016.01.058
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Development of facture free clay-based aerogel: Formulation and architectural mechanisms

Abstract: Clay aerogel could potentially be ideal insulation materials for many industrial sectors because of its natural resource, green and low cost production. However, there is a dilemma between thermal conductivity and integrity, which are also highly related to density and microstructure. These could be manipulated through formulation compositions and processing parameters. This paper employs cellulose nanowhisker (CNW) as the reinforcement to develop novel 3-component systems of aerogel by exploring optimum formu… Show more

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Cited by 26 publications
(20 citation statements)
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“…e lamellar structures and voids inside the nanoclay aerogel structures were created by the sublimation of ice. Similar results were reported in many studies based on preparing polymer/clay aerogels with various types of polymers [42,[51][52][53][54][55][56][57][58]. e denser lamellar morphology was observed with the increase of the nanoclay loadings due to the limitation of the expanded space between the adjacent lamellar at a high nanoclay content.…”
Section: Part 1: Preparation Of the Nanoclay Aerogel Masterbatchsupporting
confidence: 75%
“…e lamellar structures and voids inside the nanoclay aerogel structures were created by the sublimation of ice. Similar results were reported in many studies based on preparing polymer/clay aerogels with various types of polymers [42,[51][52][53][54][55][56][57][58]. e denser lamellar morphology was observed with the increase of the nanoclay loadings due to the limitation of the expanded space between the adjacent lamellar at a high nanoclay content.…”
Section: Part 1: Preparation Of the Nanoclay Aerogel Masterbatchsupporting
confidence: 75%
“…The development of a nanonetwork system and hence the integrity of the ATP‐based aerogel are due mainly to the synergistic effect among ATP, MACCN, and PVA. The negative charges on the surfaces both of ATP and MACCN do not allow them to bond with each other, so a special intermediate medium with double functionalities should be introduced into the mixture, and PVA was considered to be the most suitable material to play this role . Based on this concept, PVA is first adsorbed onto the surface of ATP, which leads to a decrease in surface charge and provides proper conditions.…”
Section: Resultsmentioning
confidence: 94%
“…The negative charges on the surfaces both of ATP and MACCN do not allow them to bond with each other, so a special intermediate medium with double functionalities should be introduced into the mixture, and PVA was considered to be the most suitable material to play this role. 30 Based on this concept, PVA is first adsorbed onto the surface of ATP, which leads to a decrease in surface charge and provides proper conditions. Then MACCN can be adsorbed on the outer surface of ATP crystals through hydrogen bonding, which is provided by the ATP and PVA, and the bridging connection between neighboring ATP crystals is thus generated.…”
Section: Resultsmentioning
confidence: 99%
“…For cross‐linked aerogel, the number of bridges decreases, and bridges become thinner (Fig. b–d).The reason attributed to this is that the addition of GPTMS weakens the interaction between PVA and clay, and thus the hybrid of PVA/clay in ice front is easy to rearrange during ice growth, hindering the formation of bridges . In comparison, the surface‐coated aerogel preserves the original structure of PVA/clay aerogel (Fig.…”
Section: Resultsmentioning
confidence: 96%
“…The second stage starts around 350°C, consistent with the decomposition of GPTMS network in cross‐linked aerogel. This significant improvement of surface‐coated aerogel in thermal stability is ascribed to the formation of thermal stable silica layer on the surface of laminas and bridges, hindering the diffusion of volatile decomposition products within aerogel .…”
Section: Resultsmentioning
confidence: 99%