Synthesis of biocompatible hydrophobic silica–gelatin nano-hybrid by sol–gel process

Smitha, S.; Shajesh, P.; Mukundan, P.; Nair, T. D. Radhakrishnan; Warrier, K. G. K.

doi:10.1016/j.colsurfb.2006.11.008

Cited by 75 publications

(41 citation statements)

References 35 publications

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“…To obtain leather with water-proof properties, it is supposed to apply thin polymeric layer to its surface [1][2][3][4][5] or the use of a polymer composition containing nanoscale particles [6][7][8][9] at the finishing step of processing. Materials produced in this manner can be classified as leather with a smooth upper surface [1].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Morphology of Leather Surface on the Hydrophobic-Hydrophilic Properties

Серенко¹,

Nizamova²,

Kalinin³

et al. 2014

AMPC

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Natural leathers (split, velour split, nubuck) ware investigated. Solution of fluorine silane in ethanol was applied as the hydrophobic agent. It is shown that the microstructure of the leather surface, provided its structural elements possess hydrophilic properties, determines the wetting regime and duration of the induction period of changeover from heterogeneous to homogeneous wetting. The heterogeneous regime of wetting is distinguished by low rates of spreading and absorbing. The homogeneous wetting is characterized by high rates of spreading and absorbing of a water drop. A necessary condition of the stable heterogeneous wetting regime and achieving hydrophobicity of leather with structurally inhomogeneous face layer is to preserve the microstructure features of their surface at hydrophobic treatment. The morphological peculiarities of split and ground leather ensure stable hydrophobic properties after application of efficient hydrophobizators.

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Section: Introductionmentioning

confidence: 99%

Effect of the Morphology of Leather Surface on the Hydrophobic-Hydrophilic Properties

Серенко¹,

Nizamova²,

Kalinin³

et al. 2014

AMPC

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“…Thus, recent examples reported the increase of hydrophobicity in silica/gelatin hybrids functionalized with organoalkoxysilanes bearing methyl or vinyl groups, allowing their application as anti-wetting and transparent biocompatible coatings. 236,237 Drug delivery applications can also make use of biohybrid nanoparticles due to their size in the nanometre range, lack of toxicity, and possibility of functionalization. Hybrid core-shell gelatin/silica nanoparticles prepared by a nanoemulsion route were easily internalized and intracellularly degraded by fibroblast cells, being promising materials for drug transport.…”

Section: Structural Proteins-based Silica and Silicate Biohybridsmentioning

confidence: 99%

Hybrid and biohybrid silicate based materials: molecular vs. block-assembling bottom–up processes

2011

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“…A band is observed around 1630 cm −1 related to the C=O vibrational mode, the presence of C-N-H stretch in the region of 1500 cm −1 , a C-H stretching absorptions near 1300 cm −1 , and C-O stretch at around 1000 cm −1 . Therefore, these are functional groups which have a high probability to complex with metallic cations such as Al 3+ and Si 4+ [42,43]. Comparing the obtained values of stretches for samples after drying with the pure gelatin, a variation of wavenumber and band intensity for solid after complexation (xerogel formation) related to the original gelatin was noted, probably indicating that the metals (Al 3+ and Si 4+ ) were complexed with the functional groups of gelatin.…”

Section: Fourier Transform Infrared Spectroscopy (Ftir)mentioning

confidence: 87%

Gelatin Template Synthesis of Aluminum Oxide and/or Silicon Oxide Containing Micro/Mesopores Using the Proteic Sol-Gel Method

Oliveira

Paulista

Alencar

et al. 2017

Journal of Nanomaterials

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Aluminum oxide and/or silicon oxide-based supports were synthesized by proteic sol-gel method. The characterization was performed through the analysis of TG, XRD, FTIR, SEM, and N 2 physisorption. The XRD diffractograms showed an amorphous material profile. TG results indicate the total liberation of the organic and inorganic material in the calcination temperature used, occurring in different mass loss range. This piece of information was reaffirmed by the FTIR spectra, which presented characteristic bands of gelatin structure before calcinations which disappear in the spectrum of the solid after calcinations, indicating the loss of organic matter from gelatin after heat treatment. The spectra exhibited M-O stretching vibration at low wavenumbers after calcinations related to metal oxides. The acquired images by SEM suggest the obtaining of a highly porous material with very different characteristics depending on the composition of the support. The N 2 isotherms indicate the presence of a micro/mesoporous oxide with interesting textural properties, particularly for the supports containing aluminum and silicon oxide. The ethanol dehydration results showed greater selectivity to diethyl ether compared to ethylene. From the reaction data, the following order of acid strength was obtained: 2Si-Al > Si-2Al > Si-Al > Al, which is related to the Si-Al ratio.

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Synthesis of biocompatible hydrophobic silica–gelatin nano-hybrid by sol–gel process

Cited by 75 publications

References 35 publications

Effect of the Morphology of Leather Surface on the Hydrophobic-Hydrophilic Properties

Effect of the Morphology of Leather Surface on the Hydrophobic-Hydrophilic Properties

Hybrid and biohybrid silicate based materials: molecular vs. block-assembling bottom–up processes

Gelatin Template Synthesis of Aluminum Oxide and/or Silicon Oxide Containing Micro/Mesopores Using the Proteic Sol-Gel Method

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