Porous composite structures derived from multiphase polymer blends

Baklavaridis, Apostolos; Zuburtikudis, Ioannis; Panayiotou, Costas

doi:10.1002/pen.24025

Cited by 14 publications

(17 citation statements)

References 68 publications

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“…Baklavaridis et al 27 and Zhang et al 28 used modified montmorillonite and hydroxyapatite nanoparticles to reinforce the porous poly(lactic-co-glycolic acid) scaffold. Baklavaridis et al 27 and Zhang et al 28 used modified montmorillonite and hydroxyapatite nanoparticles to reinforce the porous poly(lactic-co-glycolic acid) scaffold.…”

Section: Introductionmentioning

confidence: 99%

Porous fibers surface decorated with nanofillers: From melt‐spun PP/PVA blend fibers with silica nanoparticles

Xiang

Cayla

Salaün

et al. 2019

J of Applied Polymer Sci

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Biphasic polypropylene (PP)-polyvinyl alcohol (PVA) fibers containing silica nanoparticles with various surface hydrophobicity were melt-spun. The localization of nanoparticles relates on the thermodynamic factors, and the design promotes a surface-decorated fibrous scaffold with nanoparticles after selective extraction. The influence of silica nanoparticles on the melt flow index was observed, and the interface-located Aerosil R972 silica nanoparticles lead to an increase in viscosity. The scanning electron microscopy (SEM) demonstrates the preponderant interfacial localization of Aerosil R972 nanoparticles within the biphasic fibers. The porous morphology of the obtained fibers was investigated by SEM, selective extraction experiment, X-ray diffraction analysis, and dynamical mechanical analysis. The specific interface area of PP 70 -PVA 30 fibers with a draw ratio (DR) of 2 is 3.2 m 2 g −1 and is further enlarged with the increase of DR. The incorporation of nanoparticles contributes to the increase of interconnectivity of the PVA phase. The further increment of DR modifies the crystalline structure, and results in better mechanical properties. The Aerosil R972-containing fibers with the DR of 3 provide almost completely accessible PVA phase, with enough mechanical strength to be transformed into textile products, and retains a good mechanical property after selective extraction.

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Section: Introductionmentioning

confidence: 99%

Porous fibers surface decorated with nanofillers: From melt‐spun PP/PVA blend fibers with silica nanoparticles

Xiang

Cayla

Salaün

et al. 2019

J of Applied Polymer Sci

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“…Gogotsi and coworkers applied fluorescent PLLA–nanodiamond composites for bone tissue engineering . It was also an important work that nanocomposites were conducted on a wide variety of combinations together with polymers (epoxy resins, phenolics and so on) and porous composite structures generated from multiphase polymer blends, as was studied by Baklavaridis and coworkers …”

Section: Introductionmentioning

confidence: 99%

“…12 It was also an important work that nanocomposites were conducted on a wide variety of combinations together with polymers (epoxy resins, phenolics and so on) and porous composite structures generated from multiphase polymer blends, as was studied by Baklavaridis and coworkers. 13 Monolithic stationary phases play an extremely important role in high-performance liquid chromatography. They have developed rapidly because of their unique properties, such as costeffectiveness, simple preparation, low back pressure, fast mass transfer kinetics, and versatile surface modification compared to conventional columns packed with particles.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of nanodiamond‐based composite monolithic column and its application in separation of small molecules

Wei

Liu

Wang

et al. 2016

J of Applied Polymer Sci

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A nanodiamond‐based composite monolithic column was fabricated by redox initiation for high‐performance liquid chromatography. In the fabrication process, functionalized nanodiamond was used as the functional monomer, dipentaerythritol hexaacrylate and 1,10‐decanediol diacrylate as cross‐linking agents, polyethylene glycol 400 and 1‐propanol as coporogens, and dibenzoyl peroxide and N,N‐dimethyl aniline as initiators. Compared to polymer monolithic columns without nanodiamond, a nanodiamond‐based composite monolithic column prepared under the same conditions exhibited relatively high resolution and efficiency. Characterizations of the resulting nanocomposite were carried out, including scanning electron microscopy, mercury intrusion porosimetry, nitrogen adsorption–desorption isotherm measurement, and thermogravimetric analysis. The ND‐based composite monolith exhibited a uniform and reticular skeleton microstructure, thermal stability, and mechanical stability. In addition, the nanodiamond‐based composite monolithic column was used to separate a series of small molecules with good resolution and reproducibility in high‐performance liquid chromatography. © 2016 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 133, 43776.

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“…For example, PLGA is not soluble in cyclohexane where PS can be selectively dissolved from PLGA/PS blend by the same solvent. [20] Phase separation in PS and poly(lactide) (similar polymer to PLGA) blend were reported recently in the shell of polymeric microcapsule with www.advancedsciencenews.com www.particle-journal.com selective solubilization of the former to create porous shells. [21] In fact, and according to the Flory-Huggins theory, most polymers should be immiscible as ΔG mix is always positive with only few examples on miscible polymer blends.…”

mentioning

confidence: 97%

“…Both polymers (PS and PLGA) are hydrophobic but they have different solubility profiles and thus form immiscible polymer blends (phase separation is sketched in Figure A). For example, PLGA is not soluble in cyclohexane where PS can be selectively dissolved from PLGA/PS blend by the same solvent . Phase separation in PS and poly(lactide) (similar polymer to PLGA) blend were reported recently in the shell of polymeric microcapsule with selective solubilization of the former to create porous shells .…”

mentioning

confidence: 99%

Facile Functionalization of Gold Nanoparticles with PLGA Polymer Brushes and Efficient Encapsulation into PLGA Nanoparticles: Toward Spatially Precise Bioimaging of Polymeric Nanoparticles

Alkilany

Abulateefeh

Murphy

2018

Part & Part Syst Charact

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Nanocarriers prepared from poly(lactide‐co‐glycolide) (PLGA) have broad biomedical applications. Understanding their cellular uptake and distribution requires appropriate visualization in complex biological compartments with high spatial resolution, which cannot be offered by traditional imaging techniques based on fluorescent or radioactive probes. Herein, the encapsulation of gold nanoparticles (GNPs) into PLGA nanoparticles is proposed, which should allow precise spatial visualization in cells using electron microscopy. Available protocols for encapsulating GNPs into polymeric matrices are limited and associated with colloidal instability and low encapsulation efficiency. In this report, the following are described: 1) a facile protocol to functionalize GNPs with PLGA polymer followed by 2) encapsulation of the prepared PLGA‐capped GNPs into PLGA nanocarriers with 100% encapsulation efficiency. The remarkable encapsulation of PLGA‐GNPs into PLGA matrix obeys the general rule in chemistry “like dissolves like” as evident from poor encapsulation of GNPs capped with other polymers. Moreover, it is shown that how the encapsulated gold nanoparticles serve as nanoprobes to visualize PLGA polymeric hosts inside cancer cells at the spatial resolution of the electron microscope. The described methods should be applicable to a wide range of inorganic nanoprobes and provide a new method of labeling pharmaceutical polymeric nanocarriers to understand their biological fate at high spatial resolution.

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Porous composite structures derived from multiphase polymer blends

Cited by 14 publications

References 68 publications

Porous fibers surface decorated with nanofillers: From melt‐spun PP/PVA blend fibers with silica nanoparticles

Porous fibers surface decorated with nanofillers: From melt‐spun PP/PVA blend fibers with silica nanoparticles

Fabrication of nanodiamond‐based composite monolithic column and its application in separation of small molecules

Facile Functionalization of Gold Nanoparticles with PLGA Polymer Brushes and Efficient Encapsulation into PLGA Nanoparticles: Toward Spatially Precise Bioimaging of Polymeric Nanoparticles

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