New Developments in Polycaprolactone-Layered Silicate Nano-biocomposites: Fabrication and Properties

Namazi, Hassan; Mosadegh, Mohsen; Hayasi, Mozhgan

doi:10.1007/978-3-642-38649-7_28

Cited by 5 publications

(4 citation statements)

References 123 publications

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“…The OC was derived from synthetic saponite (Sap), modified with a cationic surfactant, and functionalized with methylene blue (MB). Polycaprolactone (PCL), a polymer with a low melting point [ 6 , 7 ] was used as a model system. Clay/PCL nanocomposites have been studied extensively, and most of the main features of these systems are well summarized in a review article [ 7 ].…”

Section: Introductionmentioning

confidence: 99%

“…Polycaprolactone (PCL), a polymer with a low melting point [ 6 , 7 ] was used as a model system. Clay/PCL nanocomposites have been studied extensively, and most of the main features of these systems are well summarized in a review article [ 7 ]. The properties of PCL composites depend much on the method of preparation (melt extrusion, monomer polymerization, solution casting) [ 6 , 7 , 8 ] and hence the possible applications of PCL nanocomposites are very broad.…”

Section: Introductionmentioning

confidence: 99%

“…Clay/PCL nanocomposites have been studied extensively, and most of the main features of these systems are well summarized in a review article [ 7 ]. The properties of PCL composites depend much on the method of preparation (melt extrusion, monomer polymerization, solution casting) [ 6 , 7 , 8 ] and hence the possible applications of PCL nanocomposites are very broad. They are often used as additives to other polymers to improve their mechanical or thermal properties [ 6 , 9 ] and exhibit antimicrobial properties, either alone [ 10 , 11 ] or in combination with other active nanoparticles [ 12 , 13 ] or molecules [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

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Modified Polymer Surfaces: Thin Films of Silicate Composites via Polycaprolactone Melt Fusion

Skoura

Boháč

Barlog

et al. 2022

IJMS

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Polymer/layered silicate composites have gained huge attention in terms of research and industrial applications. Traditional nanocomposites contain particles regularly dispersed in a polymer matrix. In this work, a strategy for the formation of a composite thin film on the surface of a polycaprolactone (PCL) matrix was developed. In addition to the polymer, the composite layer was composed of the particles of saponite (Sap) modified with alkylammonium cations and functionalized with methylene blue. The connection between the phases of modified Sap and polymer was achieved by fusing the chains of molten polymer into the Sap film. The thickness of the film of several μm was confirmed using electron microscopy and X-ray tomography. Surfaces of precursors and composite materials were analyzed in terms of structure, composition, and surface properties. The penetration of polymer chains into the silicate, thus joining the phases, was confirmed by chemometric analysis of spectral data and changes in some properties upon PCL melting. Ultimately, this study was devoted to the spectral properties and photoactivity of methylene blue present in the ternary composite films. The results provide directions for future research aimed at the development of composite materials with photosensitizing, photodisinfection, and antimicrobial surfaces.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modified Polymer Surfaces: Thin Films of Silicate Composites via Polycaprolactone Melt Fusion

Skoura

Boháč

Barlog

et al. 2022

IJMS

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“…The cellulose offers the advantage to be a renewable, biodegradable, biocompatible, and almost inexhaustible source of raw materials that can replace petrochemical compounds in many cases [6,7]. In addition, the paper substrate is interesting because it leads devices light in weight, portable, flexible, and foldable which are strongly needed in fields like microfluidics, sensors, etc.…”

Section: Introductionmentioning

confidence: 99%

Gel-Phase Reduction of Graphene Oxide Coatings by L-Ascorbic Acid

Palomba

Longo

Carotenuto

2020

The 2nd International Online-Conference on Nanomaterials

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Reduced graphene oxide (r-GO) has physical–chemical properties like graphene and therefore it can be used for most graphene-based technological applications. r-GO is produced by chemical or thermal reduction of graphene oxide (GO). GO is a highly water-soluble organic compound that can be easily processed in the form of aqueous/alcoholic ink to produce thick self-standing films (i.e., GO paper) or thin coatings supported on a variety of substrates (e.g., polymers, cellulose, glass, silicon, etc.). The best GO reduction technique depends on the substrate chemical/thermal stability, and in the case of thermally unstable substrates (e.g., cellulose), the chemical approach is mandatory. However, traditional reductants, like hydrazine and phenyl-hydrazine, are highly active and therefore detrimental for the substrate. Among the mild reducing agents, L-ascorbic acid (L-aa), a green chemical reductant, has been widely investigated for GO reduction in aqueous solutions. Here, L-aa has been used to convert a GO gel-phase to r-GO by (i) swelling the GO phase with hot water, in order to allow L-aa permeation inside its lamellar structures by diffusion; and (ii) periodically restoring the reductant on the GO layer surface. According to the morphological–structural characterization (SEM, FT-IR, etc.), the proposed approach allowed GO conversion to r-GO, preserving a thin GO interfacial layer essential for a good adhesion.

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Nanocrystalline cellulose acetate (NCCA)/graphene oxide (GO) nanocomposites with enhanced mechanical properties and barrier against water vapor

Kabiri

Namazi

2014

Cellulose

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New Developments in Polycaprolactone-Layered Silicate Nano-biocomposites: Fabrication and Properties

Cited by 5 publications

References 123 publications

Modified Polymer Surfaces: Thin Films of Silicate Composites via Polycaprolactone Melt Fusion

Modified Polymer Surfaces: Thin Films of Silicate Composites via Polycaprolactone Melt Fusion

Gel-Phase Reduction of Graphene Oxide Coatings by L-Ascorbic Acid

Nanocrystalline cellulose acetate (NCCA)/graphene oxide (GO) nanocomposites with enhanced mechanical properties and barrier against water vapor

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