Effects of oleic acid surface coating on the properties of nickel ferrite nanoparticles/PLA composites

Yin, Han; Chow, Gan‐Moog

doi:10.1002/jbm.a.32229

Cited by 10 publications

(5 citation statements)

References 43 publications

(41 reference statements)

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“…The effect of size and surface charge on various physical properties of MN has been studied, [13][14][15][16][17][18][19][20] suggesting the requirement of controlling the physical properties for their optimized heating ability in biological systems. The capping agent can be a surfactant [having a long hydrocarbon tail, e.g.…”

Section: Introductionmentioning

confidence: 99%

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Induction heating studies of Fe3O4 magnetic nanoparticles capped with oleic acid and polyethylene glycol for hyperthermia

et al. 2011

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Section: Introductionmentioning

confidence: 99%

“…The variation in lipophilicity would affect the cellular interactions of MN and hence, the net outcome of their therapeutic efficacy. Nickel ferrite MN capped with oleic acid have been prepared 15,16 and studied for physical properties. 19,20 However, there are a few reports 20,21 characterizing MN capped either with OA or PEG.…”

Section: Introductionmentioning

confidence: 99%

Induction heating studies of Fe3O4 magnetic nanoparticles capped with oleic acid and polyethylene glycol for hyperthermia

et al. 2011

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“…It can be explained if a fraction of OA is present at the Ga/PLA surface, either as a free molecule (the FTIR spectrum of Ga/OA NPs points to a possible excess OA) or within Ga/OA NPs at the surfaces that are not fully covered with PLA. Previous investigations have discovered a fraction of OA-coated NPs at the surface in solvent-cast nanocomposite films [ 95 ]. Further and more detailed analyses will be needed to draw firmer conclusions about this topic.…”

Section: Discussionmentioning

confidence: 99%

Nanogallium-poly(L-lactide) Composites with Contact Antibacterial Action

Kurtjak,

Maček Kržmanc,

Spreitzer

et al. 2024

Pharmaceutics

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In diverse biomedical and other applications of polylactide (PLA), its bacterial contamination and colonization are unwanted. For this reason, this biodegradable polymer is often combined with antibacterial agents or fillers. Here, we present a new solution of this kind. Through the process of simple solvent casting, we developed homogeneous composite films from 28 ± 5 nm oleic-acid-capped gallium nanoparticles (Ga NPs) and poly(L-lactide) and characterized their detailed morphology, crystallinity, aqueous wettability, optical and thermal properties. The addition of Ga NPs decreased the ultraviolet transparency of the films, increased their hydrophobicity, and enhanced the PLA structural ordering during solvent casting. Albeit, above the glass transition, there is an interplay of heterogeneous nucleation and retarded chain mobility through interfacial interactions. The gallium content varied from 0.08 to 2.4 weight %, and films with at least 0.8% Ga inhibited the growth of Pseudomonas aeruginosa PAO1 in contact, while 2.4% Ga enhanced the effect of the films to be bactericidal. This contact action was a result of unwrapping the top film layer under biological conditions and the consequent bacterial contact with the exposed Ga NPs on the surface. All the tested films showed good cytocompatibility with human HaCaT keratinocytes and enabled the adhesion and growth of these skin cells on their surfaces when coated with poly(L-lysine). These properties make the nanogallium-polyl(L-lactide) composite a promising new polymer-based material worthy of further investigation and development for biomedical and pharmaceutical applications.

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“…The adhesion of hybrid polyoxazoline film on the materials was also studied. The value of interfacial energy is an important parameter to determine the adhesion between two components in a composite; it is also a description of the thermodynamic state of the interface [44]. The work of adhesion W 12 measures the attraction between two different phases and W 12 =       for the separation process.…”

Section: Contact Angle Measurementsmentioning

confidence: 99%

Hydrophilization by coating of silylated polyoxazoline using sol–gel process

Alexis

Charnay

Lapinte

et al. 2013

Progress in Organic Coatings

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Hybrid films prepared from TEOS and polyoxazoline cross-linkers(Si-POx-Si) were coated on different substrates in order to modify their surface properties. The film cohesion and adhesion on substrates were expected through the hydrogen bonding of the polyoxazoline crosslinked network. Low molecular-weight α,-unsaturated polyoxazolines (DA-PMOx)s were synthesized by a one step cationic ring-opening polymerization (CROP) of 2-methyl-2-oxazoline (MOx) with a good control over the molecular weight. Based on double thiol-ene coupling (d-TEC), a postfunctionalization of end chains DA-PMOx gave in good yield polyoxazoline cross-linker (SiPOx-Si). Glass and various polymer substrates (PP, PEI, POM...) were spin coated by the organic-inorganic hybrid films through sol-gel process. AFM, SEM, visible reflectance spectroscopy and contact angle experiments allowed the full characterization of targeted surfaces and demonstrated the efficiency of the polyoxazoline coating.3

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Effects of oleic acid surface coating on the properties of nickel ferrite nanoparticles/PLA composites

Cited by 10 publications

References 43 publications

Induction heating studies of Fe3O4 magnetic nanoparticles capped with oleic acid and polyethylene glycol for hyperthermia

Induction heating studies of Fe3O4 magnetic nanoparticles capped with oleic acid and polyethylene glycol for hyperthermia

Nanogallium-poly(L-lactide) Composites with Contact Antibacterial Action

Hydrophilization by coating of silylated polyoxazoline using sol–gel process

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