Mechanical, thermal, and water vapor barrier properties of regenerated cellulose/nano-SiO2 composite films
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DOI: 10.1007/s10570-018-2059-x
Abstract: Bionanocomposite films were fabricated by reinforcing regenerated cellulose (RC) with 3-aminopropyl-functionalized silica nanoparticles (nano-SiO2). The composite films were prepared by dissolving cotton linter RC in a 7% NaOH/12% urea solution followed by the addition of… read more here.
Keywords: nano sio2; sio2; sio2 composite; regenerated cellulose ... See more keywords
Effects of nano-SiO2 on the permeability-related properties of cement-based composites with different water/cement ratios
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DOI: 10.1007/s10853-017-1906-8
Abstract: To find the suitable conditions under which nano-SiO2 can exhibit a significant impermeability enhancement effect and the mechanism underlying this effect, comparisons between the permeability-related properties of a nano-SiO2-filled cement paste and those of a… read more here.
Keywords: nano sio2; related properties; water; permeability related ... See more keywords
Effect of coated and encapsulated polyacrylate/nano-SiO2 composite emulsions on the finishing performances of leather via miniemulsion polymerization
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DOI: 10.1007/s10853-020-04776-3
Abstract: In this study, the polyacrylate/nano-SiO2 (PA/SiO2) composite emulsion with ideal encapsulated and coated morphologies were prepared by miniemulsion polymerization. They, respectively, are encapsulated PA/SiO2-S composite emulsion, coated PA/SiO2-Q and PA/SiO2-W composite emulsion. The morphology of… read more here.
Keywords: nano sio2; sio2 composite; emulsion; composite emulsions ... See more keywords
An efficient and green method for the synthesis of Betti base employing nano-SiO2–H3BO3 as a novel recyclable heterogeneous catalyst
Sign Up to like & getrecommendations! Published in 2017 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-017-3024-2
Abstract: In this research, nano-SiO2–H3BO3 is introduced as a novel environmentally benign and recyclable heterogeneous catalyst for the synthesis of aminonaphthols under solvent-free conditions without an additional co-catalyst or additive in air. This synthesis method offers… read more here.
Keywords: nano sio2; sio2 h3bo3; recyclable heterogeneous; catalyst ... See more keywords
One-pot multicomponent synthesis in aqueous medium of 1,4-dihydropyrano[2,3-c]pyrazole-5-carbonitrile and derivatives using a green and reusable nano-SiO2 catalyst from agricultural waste
Sign Up to like & getrecommendations! Published in 2017 at "Research on Chemical Intermediates"
DOI: 10.1007/s11164-017-3104-3
Abstract: Nanosilica from wheat straw—an agricultural waste—was utilized as a novel and efficient heterogeneous catalyst for synthesis of bioactive pyrano[2,3-c]pyrazole derivatives via one-pot four-component reaction of various aryl aldehydes, hydrazine hydrate, ethyl acetoacetate, and malononitrile in… read more here.
Keywords: nano sio2; agricultural waste; spectroscopy; one pot ... See more keywords
Mechanical property of lignin-modified phenolic foam enhanced by nano-SiO2 via a novel method
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DOI: 10.1007/s11696-017-0317-2
Abstract: Recently, the application of nano-SiO2 in composite materials has received wide attention. In this work, a new method was explored to prepare nano-SiO2 using phenol instead of other organic alcohols. The obtained nano-SiO2 was characterized… read more here.
Keywords: property lignin; nano sio2; sio2; mechanical property ... See more keywords
Construction of anti-flame network structures in cotton fabrics with pentaerythritol phosphate urea salt and nano SiO2
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DOI: 10.1016/j.apsusc.2019.145175
Abstract: Abstract Based on pentaerythritol phosphate urea salt (PEPAS), 2-(4-(4,6-dichloro- 1,3,5-triazin-2-ylamino) phenylsulfonyl) ethyl sulfate sodium (CYPA) and nano-SiO2, a novel flame-retardant method for cotton fabrics was developed via chemical modification and nano deposition technologies. The chemical… read more here.
Keywords: nano sio2; flame; spectroscopy; cotton fabrics ... See more keywords
Influence of nano-SiO2 on the strength and microstructure of natural pozzolan based alkali activated concrete
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DOI: 10.1016/j.conbuildmat.2018.04.051
Abstract: Abstract Development of alkali-activated binder (AAB) is fast becoming a viable alternative to ordinary portland cement (OPC). However, key engineering properties of such a binder depend strongly on the chemical composition and fineness of the… read more here.
Keywords: alkali activated; strength; activated concrete; nano sio2 ... See more keywords
Effect of PVA fiber on mechanical properties of cementitious composite with and without nano-SiO2
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DOI: 10.1016/j.conbuildmat.2019.117068
Abstract: Abstract The present study investigated the effect of polyvinyl alcohol (PVA) fiber content on flowability, compressive strength, flexural strength, tensile strength and fracture performance of cementitious composites. The PVA fiber volume content added in the… read more here.
Keywords: strength; nano sio2; pva fiber; fiber mechanical ... See more keywords
Effects of nano-SiO2 and secondary water curing on the carbonation and chloride resistance of autoclaved concrete
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DOI: 10.1016/j.conbuildmat.2019.117465
Abstract: Abstract Nano-SiO2 (NS) was used to replace cement in autoclaved concrete at replacement levels of 0%, 1%, 2%, and 3%. The concrete specimens were cured through three different methods: (1) standard curing (SD), (2) autoclave… read more here.
Keywords: water curing; nano sio2; carbonation; secondary water ... See more keywords
Effect of functionalized nano-SiO2 addition on bond behavior of adhesively bonded CFRP-steel double-lap joint
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DOI: 10.1016/j.conbuildmat.2020.118400
Abstract: Abstract The mechanical properties of adhesives significantly influence the bond behavior of steel structures strengthened by carbon fiber-reinforced polymer (CFRP) composites. In order to improve the toughness of the adhesive and the ductile behavior of… read more here.
Keywords: bond; nano sio2; functionalized nano; cfrp steel ... See more keywords