Non-hydroscopic vanilla doped dichromated gelatin holographic material

Pinto-Iguanero, Bernardina; Olivares‐Pérez, A.; Méndez-Alvarado, A.W.; Fuentes‐Tapia, I.; Treviño‐Palacios, Carlos G.

doi:10.1016/s0925-3467(03)00003-x

Cited by 13 publications

(9 citation statements)

References 3 publications

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“…Gelatin is a high‐molecular‐weight polypeptide obtained by the controlled hydrolysis of collagen . The major amino acids in gelatin are glycine (30 wt%) and proline/hydroxyproline (25 wt%), where frequently occurring sequences are–glycine–X–proline,–glycine–proline–X and–glycine–X–hydroxyproline, where X may be any amino acid . Gelatin is a good film‐ and particle‐forming material, with uses in medicine such as in plasma expanders, wound dressings, adhesives and controlled drug delivery , .…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of porous scaffold composite films by blending chitosan and gelatin solutions for skin tissue engineering

Rahman

Pervez

Nesa

et al. 2012

Polymer International

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Biodegradable polymers have significant potential in biotechnology and bioengineering. However, for some applications, they are limited by their inferior mechanical properties and unsatisfactory compatibility with cells and tissues. In the present investigation blends of chitosan and gelatin with various compositions were produced as candidate materials for biomedical applications. Fourier transform infrared spectral analysis showed good compatibility between these two biodegradable polymers. The composite films showed improved tensile properties, highly porous structure, antimicrobial activities, low water dissolution, low water uptake and high buffer uptake compared to pure chitosan or gelatin films. These enhanced properties could be explained by the introduction of free OH, NH2 and NHOCOCH3 groups of the amorphous chitosan in the blends and a network structure through electrostatic interactions between the ammonium ions (NH3+) of the chitosan and the carboxylate ions (COO−) of the gelatin. Scanning electron microscopy images of the blend composite films showed homogeneous and smooth surfaces which indicate good miscibility between gelatin and chitosan. The leafy morphologies of the scaffolds indicate a large and homogeneous porous structure, which would cause increased ion diffusion into the gel that could lead to an increase in stability in aqueous solution, buffer and temperature compared to the gelatin/chitosan system. In vivo testing was done in a Wistar rat (Rattus norvegicus) model and the healing efficiencies of the scaffolds containing various compositions of chitosan were measured. The healing efficiencies in Wistar rat of composites with gelatin to chitosan ratios of 10:3 and 10:4 were compared with that of a commercially available scaffold (Eco‐plast). It was observed that, after 5 days of application, the scaffold with a gelatin to chitosan ratio of 10:3 showed 100% healing in the Wistar rat; however, the commercial Eco‐plast showed only a little above 40% healing of the dissected rat wound. Copyright © 2012 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of porous scaffold composite films by blending chitosan and gelatin solutions for skin tissue engineering

Rahman

Pervez

Nesa

et al. 2012

Polymer International

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“…Gelatin (polyelectrolyte) is a high molecular weight polypeptide obtained by the controlled hydrolysis of collagen [5]. The major amino acids in gelatin are glycine (30%) and proline/hydroxyproline (25%) with frequently occurring sequences are; ‐glycine‐X‐proline, ‐glycine‐proline‐X, and ‐glycine‐X‐hydroxyproline, where X may be any amino acid [6]. Gelatin is a good film and particle forming material [7] with uses in medicine, such as in plasma expanders, wound dressings, adhesives, and controlled drug delivery [8, 9].…”

Section: Introductionmentioning

confidence: 99%

Preparation of the chitosan containing nanofibers by electrospinning chitosan–gelatin complexes

Haider

Al-Masry

Bukhari

et al. 2010

Polymer Engineering & Sci

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Electrospinning is an interesting technique, which provides a facile and an effective mean in producing nonwoven fibrous materials; however, for producing nanofibers, investigation of the electrospinning conditions is very important. In this study, chitosan, gelatin, and their polyelectrolyte complexes (PECs) were electrospun to prepare nonwoven nanofibrous mats. The concentrations of chitosan and gelatin solutions and electric field (kV/cm) were optimized. The solutions were then blended in different ratios (0-100%) to get electrospun nanofibrous mats. Solution concentration and electric field showed pronounced effect on the electrospinnability and fiber diameter of these systems. Mostly large beads coexisted with the fibers were observed for chitosan at 1 wt% solution concentration, which then showed good electrospinnability at 2 wt% (nanofiber diameter was 145 and 122 nm at 15 and 20 kV/10 cm, respectively), whereas gelatin showed no electrospinnability below 15 wt% solution concentration and a homogenous fibers network at 15 wt% (149 nm at 20 kV/10 cm). The morphology and diameter of chitosan-gelatin PEC nanofibers varied with the chitosan/gelatin ratio. The crystallinity of chitosan was also observed to reduce with electrospinning and addition of gelatin. View this article online at wileyonlinelibrary.com. V V C 2010 Society of Plastics Engineers POLYMER ENGINEERING AND SCIENCE--2010 FIG. 3. WAXS patterns for the crystalline structure changes of (a) chitosan film and (b) chitosan-gelatin PEC (80/20) electrospun fiber. FIG. 2. FTIR spectra of (a) gelatin, (b) chitosan, and (c) PEC.

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“…6 000 HO$ /> / the manufacturing of synthetic resins, as inhibitor of fermentation, as mist to disinfect air, as emulsifier in foods 9 . In this work, vanillin is the molecule responsible to obtain low response to the environment humidity 10 . The absorbance spectrum for the vanillin was obtained employing a Perkin-Elmer spectrophotometer.…”

Section: 11-pectinmentioning

confidence: 99%

Hydrophobic sugar holograms

et al. 2008

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The sugar matrix is used to record of phase holograms; it was modified with the purpose of obtaining a hydrophobic material to improve the stability of the registered image and to stimulate the photosensitivity of the sugar. The new material is formed by a sugar, pectin and vanillin dissolution. The diffraction efficiency parameter increases in comparison with only the sugar matrix, obtaining already of 10%.

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Non-hydroscopic vanilla doped dichromated gelatin holographic material

Cited by 13 publications

References 3 publications

Preparation and characterization of porous scaffold composite films by blending chitosan and gelatin solutions for skin tissue engineering

Preparation and characterization of porous scaffold composite films by blending chitosan and gelatin solutions for skin tissue engineering

Preparation of the chitosan containing nanofibers by electrospinning chitosan–gelatin complexes

Hydrophobic sugar holograms

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