Hydrophobic siloxane paper coatings: the effect of increasing methyl substitution

Cappelletto, Elisa; Callone, Emanuela; Campostrini, R.; Girardi, Fabrizio; Maggini, Simona; Volpe, C. Della; Siboni, S.; Maggio, R. Di

doi:10.1007/s10971-012-2747-1

Cited by 32 publications

(28 citation statements)

References 38 publications

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“…The new bands at 2920 cm -1 and 2840 cm -1 (Cappelletto et al 2012) in the AASimpregnated samples were ascribed to the asymmetrical and symmetrical stretching of C-H bonds (CH3 and CH2) in AAS. These peaks were more evident in the sample treated with the longer alkyl chain (DTMOS).…”

Section: Chemical Analysismentioning

confidence: 90%

Properties of Thermally Modified Southern Pine Wood Pretreated with Alkylalkoxysilanes

Chen¹,

Wang²,

Cao³

et al. 2016

BioResources

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The alkyl-alkoxysilane (AAS) pre-impregnation method and thermal modification were combined to improve the water-related properties of southern yellow pine (Pinus spp.) sapwood. Four types of AAS with varied alkyl chain lengths, including butyltrimethoxysilane (BTMOS), octyltrimethoxysilane (OTMOS), dodecyltrimethoxysilane (DTMOS), and cetyltrimethoxysilane (CTMOS), were used to pre-impregnate wood samples at a concentration of 5% or 15% mass fraction, and the subsequent thermal modification was processed at either 180 °C or 200 °C. The water absorption, dimensional stability, equilibrium moisture content (EMC), mechanical properties (modulus of rupture (MOR), and modulus of elasticity (MOE)), and mold resistance of the treated wood were evaluated. Fourier-transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM) were used to reveal the mechanism of the combined treatments in improving the properties of wood. Compared with thermal modification alone, the AAS combined treatment improved the water repellency, mechanical properties, and mold resistance of the modified wood. The study also identified the penetration of AAS into the wood cell wall and its reaction with the chemical components of the cell wall.

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Section: Chemical Analysismentioning

confidence: 90%

Properties of Thermally Modified Southern Pine Wood Pretreated with Alkylalkoxysilanes

Chen¹,

Wang²,

Cao³

et al. 2016

BioResources

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“…Roughened surfaces have commonly been obtained by the introduction of nano-size particles onto the pristine surface, and the sol-gel technique has been reported as a promising tool for the preparation of water-repellent coatings that is especially versatile for applications on glass, paper, and textile [95][96][97][98][99][100]. An exhaustive review on the application of sol-gel techniques to textiles has been published by Mahltig and Textor [101], and a series of selected articles is reported in Table 7.…”

Section: Water and Oil Repellency By Sol-gel Techniquesmentioning

confidence: 99%

Modification of Surface Energy and Wetting of Textile Fibers

Ferrero¹,

Periolatto²

2015

Wetting and Wettability

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The modification of the surface energy of textile fibers to improve functional properties such as the wettability was reviewed. This modification can be achieved by physical or chemical methods or by the combination of both. Applications of plasma treatment to improve the wettability of natural and synthetic fibers were considered and some methods of wettability measurement were mentioned. Subsequently the methods aimed to confer water and oil repellency were discussed and the treatment by UV curing of fluorochemicals was explained in detail. Finally the sol-gel techniques useful to modify the surface properties of textiles were introduced and the results of water and oil repellency achievable by sol-gel were presented.

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“…The template preparation can include removing constituents of the natural structure,50–54 substitution of surface moieties,55–58 or deposition of coupling agents 59–65. Material is deposited by liquid or vapor phase infiltration of the templates66–68 with reactive or non‐reactive melts,66, 69–71 solutions,54, 72, 73 colloids,74–76 or suspensions. Applying vacuum during the infiltration can be beneficial for the removal of air and improves the subsequent filling of pores with the precursor.…”

Section: Definition and Strategiesmentioning

confidence: 99%

“…In literature TEOS has been used in its monomeric54, 59, 74, 250 or pre‐hydrolysed oligomeric state 75, 76, 80, 251. Alternatively, alkyl‐substituted species were used for a range of purposes such as creating hydrophobic wood composites 75, 80, 249, 252–254. Alcohols are suitable solvents for the infiltration of alkoxides precursors into plant templates.…”

Section: Hierarchical Nanotemplating Of Plant Issuementioning

confidence: 99%

Recent Progress in the Replication of Hierarchical Biological Tissues

Paris

Fritz‐Popovski

Opdenbosch

et al. 2013

Adv Funct Materials

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Bioinspired materials research is a continuously growing fi eld in interdisciplinary materials science and engineering with large potential for novel functional materials. One possibility of combining the hierarchical structure of natural materials with the broad range of available constituent materials is biotemplating, i.e., the use of biological materials as scaffolds or casting molds for the synthesis of ceramics, semiconductors, metals, polymers or composites thereof. However, the replication of structural details of complex biological tissues over several levels of hierarchy down to the nanometer level is still a big challenge. The biological templates need to be (made) accessible for the precursor materials down to the nanometer scale, and the desired inorganic replica often require a fi nal thermal treatment with the danger of collapse of the nanostructure. Here, some of the current knowledge about the replication of hierarchical biological materials into ceramics or carbons with special emphasis on wood as a template is reviewed. It is concluded that real hierarchical replication down to the nanometer scale requires a careful preparation of the biological template, followed by elaborate template infi ltration via gas or liquid phases and their transformation into a solid, and fi nally, the gentle removal of the template. Not surprisingly, retaining the replicated material in an amorphous or nanocrystalline state is a key requirement for a successful nanometer-scale replication of biological materials.

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Hydrophobic siloxane paper coatings: the effect of increasing methyl substitution

Cited by 32 publications

References 38 publications

Properties of Thermally Modified Southern Pine Wood Pretreated with Alkylalkoxysilanes

Properties of Thermally Modified Southern Pine Wood Pretreated with Alkylalkoxysilanes

Modification of Surface Energy and Wetting of Textile Fibers

Recent Progress in the Replication of Hierarchical Biological Tissues

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