In Situ Polymerization of Aqueous Solutions of NIPAAm Initiated by Atmospheric Plasma Treatment

Molina, Ricardo; Ligero, Cristina; Jovančić, Petar; Bertran, Enric

doi:10.1002/ppap.201200121

Cited by 24 publications

(30 citation statements)

References 26 publications

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“…9 If properly controlled, activation of polymer surfaces by plasma exposure presents important environmental advantages with respect to standard activation methods, as for example those based on aggressive reagents or harmful radiations. 10,11 Although there are several works focused on the activation of PP surface with plasma technology, [12][13][14][15] the effects of plasma on PP meshes, such as monofilament threads and 2D multifilament prosthesis have been scarcely reported. As few examples, Gorgieva et al 12 studied the influence of O2-plasma activated PP surface in the adhesion of gelatin-coated mesh fibres with in situ integrated antimicrobial -poly-L-lysine immobilized on the PP-gel biomimetic scaffolds.…”

Section: Introductionmentioning

confidence: 99%

“…al. 14,28 The present work represents an initial study for the future development of a new generation of surgical meshes, able to interact with the complex three-dimensional structure of biological tissues, as smart material working as self-evolving motion sensor. The idea is to create a bilayer mesh, where one component is the polypropylene (PP), as hard material; and the other is the thermoresponsive hydrogel (PNIPAAm), as soft unit.…”

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confidence: 99%

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The mechanism of adhesion and graft polymerization of a PNIPAAm thermoresponsive hydrogel to polypropylene meshes

et al. 2019

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Section: Introductionmentioning

confidence: 99%

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confidence: 99%

The mechanism of adhesion and graft polymerization of a PNIPAAm thermoresponsive hydrogel to polypropylene meshes

et al. 2019

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“…Molina et al [46] employed a dielectric barrier discharge (DBD) between the two electrodes for generation of plasma in contact with the liquid surface as an innovative route for synthesis of a thermosensitive PNIPAAm. The VPTT of PNIPAAm obtained by liquid-phase plasma polymerization is quite similar to that obtained by conventional polymerization methods (around 32 C).…”

Section: Novel Strategies For Pnipaam-based Hydrogel Synthesismentioning

confidence: 99%

Novel Synthesis Pathways for PNIPAAm-Based Hydrogels and Their Application in Thermosensitive Textiles

Jovančić

Petruš̆̌̌̌ić

Molina

2014

Handbook of Smart Textiles

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The research focus is lately directed towards the development of the thermosensitive textiles with advanced functionalities. As sources of inspiration for a progress in the field of these innovative materials, stimuli-sensitive polymer engineering, plasma surface engineering, and nanotechnology have been extensively explored. In this work, the polymerization methods for synthesis of Poly(N-isopropylacrylamide), PNIPAAm-based hydrogels, incorporating natural biopolymers (chitosan and b-cyclodextrin), for achieving dual temperature/pH sensitivity and improvement of relevant loading capacity towards specific guest molecules are outlined. These PNIPAAm-based hydrogels are of great interest for biomedical applications (transdermal drug delivery, cell encapsulation, wound dressing, tissue repair, etc.) and intelligent stimuli-sensitive textile coatings for moisture regain control, antimicrobial properties, water and/or oil repellency, and fragrance release. The strategies for synthesis of PNIPAAm-based hydrogels (macro and micro forms) and their proper integration onto textiles through the plasma surface modification, graft polymerization, and coatings are discussed. Novel possibilities for creating hydrogels based on atmospheric plasma polymerization of NIPAAm monomers in liquids have alos been reported. Plasma polymerization in liquids demonstrated a great technological potential given that it may be performed without the use of chemical initiators and even without cross-linking agents, offering multiple advantages over the conventional hydrothermal polymerization methods. Further research on adequate chemical and physical structures of PNIPAAm-based hydrogels and methods of their applications in textiles could boost a progress in the domain of smart textiles, implying novel performances and end uses.

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“…[30][31] In our previous work, hydrophilic-oleophobic coatings were deposited on cellulosic materials by means of in situ plasma polymerization of acrylic acid aqueous solutions followed by a cationic fluorosurfactant complexation. 32 Novel possibilities for creating functional thermo-responsive poly (N-isopropyl acrylamide) (pNIPAAm) coatings, [33][34] as well as gelation of chitosan 35 based on atmospheric pressure plasma dielectric barrier discharges (DBDs) in contact with liquids have also been recently reported.…”

Section: Introductionmentioning

confidence: 99%

Hydrophobic Coatings on Cotton Obtained by in Situ Plasma Polymerization of a Fluorinated Monomer in Ethanol Solutions

Molina

Teixidó

Kan

et al. 2017

ACS Appl. Mater. Interfaces

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Plasma polymerization using hydrophobic monomers in the gas phase is a well-known technology to generate hydrophobic coatings. However, synthesis of functional hydrophobic coatings using plasma technology in liquids has not yet been accomplished. This work is consequently focused on polymerization of a liquid fluorinated monomer on cotton fabric initiated by atmospheric plasma in a dielectric barrier discharge configuration. Functional hydrophobic coatings on cotton were successfully achieved using in situ atmospheric plasma-initiated polymerization of fluorinated monomer dissolved in ethanol. Gravimetric measurements reveal that the amount of polymer deposited on cotton substrates can be modulated with the concentration of monomer in ethanol solution, and cross-linking reactions occur during plasma polymerization of a fluorinated monomer even without the presence of a cross-linking agent. FTIR and XPS analysis were used to study the chemical composition of hydrophobic coatings and to get insights into the physicochemical processes involved in plasma treatment. SEM analysis reveals that at high monomer concentration, coatings possess a three-dimensional pattern with a characteristic interconnected porous network structure. EDX analysis reveals that plasma polymerization of fluorinated monomers takes place preferentially at the surface of cotton fabric and negligible polymerization takes place inside the cotton fabric. Wetting time measurements confirm the hydrophobicity of cotton coatings obtained although equilibrium moisture content was slightly decreased. Additionally, the abrasion behavior and resistance to washing of plasma-coated cotton has been evaluated.

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In Situ Polymerization of Aqueous Solutions of NIPAAm Initiated by Atmospheric Plasma Treatment

Cited by 24 publications

References 26 publications

The mechanism of adhesion and graft polymerization of a PNIPAAm thermoresponsive hydrogel to polypropylene meshes

The mechanism of adhesion and graft polymerization of a PNIPAAm thermoresponsive hydrogel to polypropylene meshes

Novel Synthesis Pathways for PNIPAAm-Based Hydrogels and Their Application in Thermosensitive Textiles

Hydrophobic Coatings on Cotton Obtained by in Situ Plasma Polymerization of a Fluorinated Monomer in Ethanol Solutions

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