An inexpensive, rapid, safe, and recycling-favoring method for the fabrication of core/shell PVP/CdS composite fibers from a gas–solid reaction between H2S vapor and electrospun PVP/CdCl2

García-Valenzuela, J.A.; Nájera-Luna, A. L.; Castillo‐Ortega, M. M.; Hu, Hailin; Sotelo-Lerma, M.

doi:10.1016/j.mssp.2015.04.020

Cited by 11 publications

(8 citation statements)

References 10 publications

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“…The following characteristic peaks were observed: for CA there is a broad band at around 3575 cm -1 correspond to the O-H stretching vibrations, C-H stretching vibrations of methylene between 2800-3000 cm -1 , an C=O ester stretching peak at around 1759 cm -1 , Fig. 1(a); for PVP, a broad band at around 3452 cm -1 correspond to the O-H stretching vibrations, due to adsorbed water [33].…”

Section: Resultsmentioning

confidence: 97%

Preparation and Characterization of Coaxial Electrospun Fibers Containing Triclosan for Comparative Study of Release Properties with Amoxicillin and Epicatechin

Rodríguez-Félix¹,

Castillo‐Ortega

Nájera-Luna³

et al. 2016

CDD

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The optimal conditions for the fibers preparation of cellulose acetate (CA) and poly(vinyl pyrrolidone) (PVP) containing triclosan within the fiber were successfully found; the physicochemical characteristics of these fibrous membranes were corroborated by FTIR spectroscopy, thermal analysis, mechanical tests, SEM , and TEM analysis. The formation of composite fibers of CA and PVP containing triclosan at the core of the fiber was evidenced. A comparative study of the release properties of amoxicillin, epicatechin or triclosan embedded into fibers CA/PVP/CA was performed. As more interactions of the drug with CA or PVP occur, slower release of the drug into the release medium takes place. Regarding the drug delivery system design, it is important to consider the possible molecular interactions between the material components and predict how fast or slow the drug will be delivered into the corresponding medium.

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Section: Resultsmentioning

confidence: 97%

Preparation and Characterization of Coaxial Electrospun Fibers Containing Triclosan for Comparative Study of Release Properties with Amoxicillin and Epicatechin

Rodríguez-Félix¹,

Castillo‐Ortega

Nájera-Luna³

et al. 2016

CDD

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“…Such is the importance of composite materials that they represent an emerging group of advanced materials that are gaining relevance day by day. Particularly, organic/inorganic composites have been extensively studied and widely employed in life science [3], eco-environment [4], energy [5], electronics [6,7], polymer engineering [8] and many other fields. Therefore, utilization of organic/inorganic composites has become a common tool in the development of composite materials, thus allowing their application in fields as diverse as those mentioned above.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the antibacterial galactomannan/ $$\hbox {Zn(OH)}_{2}$$ Zn(OH) 2 –ZnO composite material prepared in situ from a green process using mesquite seeds as a biopolymer source

et al. 2019

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In this work, the preparation of an antibacterial galactomannan/Zn(OH) 2-ZnO composite material by a green process is proposed and demonstrated. The galactomannan polysaccharide was extracted from the arid-native mesquite (Prosopis spp.) seeds through a hydrothermal technique, and it was used as an organic polymeric matrix for the in situ chemical precipitation of the Zn(OH) 2-ZnO inorganic particles from simple reactions between Zn 2+ and NaOH. The preparation was performed under standard conditions in aqueous solutions. The composite material, which was obtained by centrifugation of the previous preparation, was characterized by X-ray diffraction, transmission and scanning electron microscopy, infrared spectroscopy and thermal analysis. By means of these techniques, it was deduced that the composite material is highly crystalline (about 94%), composed of about 92% inorganic and 8% organic portion, and has a predominant size of 760 nm and a mean size of 800 nm. The antibacterial activity of the composite material was also studied, which resulted better against Escherichia coli (Gram-negative bacterium) than against Staphylococcus aureus (Gram-positive bacterium), which was calculated in a difference of about 30%. This work presents the high potential of galactomannans to form functional composite materials with inorganic particles.

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“…Nanocomposite (NCp) of semiconductor nanocrystals (NCs) embedded in polymer matrix [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15] is highly desirable in order to exploit the full potential of NC's applications in optoelectronic devices, gas sensors, etc. Polymers provide flexibility, processibility, and chemical Electronic supplementary material The online version of this article (doi:10.1007/s10853-015-9481-3) contains supplementary material, which is available to authorized users.…”

Section: Introductionmentioning

confidence: 99%

“…passivation, keeping intact the optoelectronic properties of semiconductor NCs or improving it. In last decades, the need to find out suitable techniques to create NCps of semiconductor NCs embedded in a polymer matrix has led to extensive research in this field [2][3][4][5][6][7][8][9][10][11][12][13][14][15]. Finding new routes for driving organic polymers and inorganic NCs to self-assemble into NCps is one of the main issues.…”

Section: Introductionmentioning

confidence: 99%

“…Further, it is interesting to note that CdS NCs embedded in PVP matrix has shown promising and better NLO property as compared to bare CdS NCs as well as CdS NCs embedded in other polymer matrices [21][22][23]. CdS-PVP NCp has been investigated for various nonlinear and linear optical properties [2][3][4][5][6][7][8][9][10][11][12][13][14][15]23].…”

Section: Introductionmentioning

confidence: 99%

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Insight into co-operative growth of nearly monodispersive CdS nanocrystals embedded in polyvinyl pyrrolidone

et al. 2015

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Nanocomposites of CdS nanocrystals (NCs) embedded in a polyvinyl pyrrolidone are grown using onestep chemical bath deposition technique. While this method eliminates an additional step for the growth of NCs, it also leads to the formation of nearly monodispersive CdS NCs as indicated by absorption, reflection, and photoluminescence spectroscopy. Further, scanning electron microscopy, energy-dispersive spectroscopy, and transmission electron microscopic investigations reveal the formation of nearly monodispersive CdS NCs (*6 to 10 nm) embedded in PVP spheres of sizes *100 to 600 nm. Systematic study of variation in Cadmium acetate (Cd ion source), Thiourea (S ion source), PVP concentration, deposition time, and heating/cooling cycles elucidates the co-operative growth mechanism for CdS-PVP nanocomposite. The experimental observations of this study are corroborated with existing theoretical simulations for nanocomposite growth, which explicates that collapse of PVP into a sphere is crucial to inclusion of only nearly monodispersive CdS NCs. Important insights obtained from this work give control on the growth of nearly monodispersive CdS NCs embedded in PVP, using a simple and inexpensive growth technique.

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An inexpensive, rapid, safe, and recycling-favoring method for the fabrication of core/shell PVP/CdS composite fibers from a gas–solid reaction between H2S vapor and electrospun PVP/CdCl2

Cited by 11 publications

References 10 publications

Preparation and Characterization of Coaxial Electrospun Fibers Containing Triclosan for Comparative Study of Release Properties with Amoxicillin and Epicatechin

Preparation and Characterization of Coaxial Electrospun Fibers Containing Triclosan for Comparative Study of Release Properties with Amoxicillin and Epicatechin

Characterization of the antibacterial galactomannan/ $$\hbox {Zn(OH)}_{2}$$ Zn(OH) 2 –ZnO composite material prepared in situ from a green process using mesquite seeds as a biopolymer source

Insight into co-operative growth of nearly monodispersive CdS nanocrystals embedded in polyvinyl pyrrolidone

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