Particle Surface Design using an All‐Dry Encapsulation Method

Lau, Kenneth K. S.; Gleason, Karen K.

doi:10.1002/adma.200600896

Cited by 75 publications

(44 citation statements)

References 47 publications

(41 reference statements)

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“…Figure 3 shows the FTIR spectra of pristine and PGMA‐coated CNTs. The spectrum of pristine nanotubes does not contain significant absorbance peaks compared with the spectrum of PGMA‐coated nanotubes, which is expected because CNTs do not absorb much in the infrared region 19. The weak absorption peaks between 2924 and 2845cm −1 can be attributed to CH stretching, while the peak at 1380 cm −1 is due to CH bending 20.…”

Section: Resultsmentioning

confidence: 95%

Effect of noncovalent chemical modification on the electrical conductivity and tensile properties of poly(methyl methacrylate)/carbon nanotube composites

Köysüren

Karaman

Özyurt

2012

J of Applied Polymer Sci

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Noncovalent chemical modification by initiated chemical vapor deposition technique is applied to carbon nanotubes (CNTs) to reduce average agglomerate size of the nanoparticles in the polymer matrix and to improve surface interaction between the composite constituents. CNT surfaces are coated conformally with thin poly(glycidyl methacrylate) (PGMA) polymer film and coated nanoparticles are incorporated in poly(methyl methacrylate) (PMMA) polymer matrix using solvent casting technique. Conformal PGMA coatings around individual nanotubes were identified by scanning electron microscopy analysis. Transmission electron microscopy and optical microscopy analyses show homogeneous composite morphology for composites prepared by using PGMA coated nanotubes. Fourier Transform Infrared and X-ray photoelectron spectroscopy analyses show the successful deposition of polymer with high retention of epoxide functionality. PGMA coating of CNTs exhibits improvement in electrical conductivity and tensile properties of PGMA-CNT/PMMA systems when compared with uncoated nanoparticles.

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Section: Resultsmentioning

confidence: 95%

Effect of noncovalent chemical modification on the electrical conductivity and tensile properties of poly(methyl methacrylate)/carbon nanotube composites

Köysüren

Karaman

Özyurt

2012

J of Applied Polymer Sci

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“…As a dry mechanism without liquid phase or excipient to produce a conformal polymerization, iCVD also provides the ability to encapsulate fine particles down to nanoscale without challenges of particle agglomeration, toxic solvents, and poor quality control in conventional coatings 144…”

Section: Chain Growth Polymerization: Icvdmentioning

confidence: 99%

“…The benign reaction conditions inherent to the iCVD process make it an ideal method for coating thermally‐sensitive drugs. Encapsulation of fine drug particles, including microcrystals, is facilitated by the use of a rotary iCVD reactor 161, 162. Additionally, iCVD MAA films have been used to cap the pores of biodegradable, nanoporous Si matrices loaded with a model drug compound 163.…”

Section: Responsive Icvd Surfaces and Devicesmentioning

confidence: 99%

25th Anniversary Article: CVD Polymers: A New Paradigm for Surface Modifi cation and Device Fabrication

et al. 2013

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Well-adhered, conformal, thin (<100 nm) coatings can easily be obtained by chemical vapor deposition (CVD) for a variety of technological applications. Room temperature modification with functional polymers can be achieved on virtually any substrate: organic, inorganic, rigid, flexible, planar, three-dimensional, dense, or porous. In CVD polymerization, the monomer(s) are delivered to the surface through the vapor phase and then undergo simultaneous polymerization and thin film formation. By eliminating the need to dissolve macromolecules, CVD enables insoluble polymers to be coated and prevents solvent damage to the substrate. CVD film growth proceeds from the substrate up, allowing for interfacial engineering, real-time monitoring, and thickness control. Initiated-CVD shows successful results in terms of rationally designed micro- and nanoengineered materials to control molecular interactions at material surfaces. The success of oxidative-CVD is mainly demonstrated for the deposition of organic conducting and semiconducting polymers.

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“…Due to the solvent‐free nature of vapor‐based coating techniques, the CVD method prevents problems associated with solvents such as the agglomeration of CNTs. So far, different CVD strategies, such as initiated CVD (iCVD) and plasma‐enhanced CVD (PECVD), have been employed to modify CNT surfaces. Previously, it was reported that PECVD‐modified CNTs show better interface compatibility with an epoxy matrix, compared to those with chemical functionalization .…”

Section: Introductionmentioning

confidence: 99%

Improvement of carbon nanotube dispersion in electrospun polyacrylonitrile fiber through plasma surface modification

Gürsoy

Ozcan

Karaman

2019

J of Applied Polymer Sci

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In this study, surfaces of multiwalled carbon nanotubes (CNTs) were functionalized with poly(hexafluorobutyl acrylate) (PHFBA) thin film using a rotating‐bed plasma‐enhanced chemical vapor deposition (PECVD) method without imparting any defects on their surfaces. Polyacrylonitrile (PAN) electrospun polymer fiber mats and composite fiber mats with CNTs and functionalized CNTs (f‐CNTs) were prepared. The wettability and chemical and morphological properties of the synthesized fiber mats were investigated, and the dispersion of CNTs and f‐CNTs in the polymer matrix was compared according to the contact angle results of electrospun polymer mats. According to the chemical and morphological characterization results, PHFBA‐coated CNTs were dispersed more uniformly in the polymer matrix than the uncoated CNTs. The f‐CNTs/PAN composite fiber mat exhibits a lower surface energy than the pristine CNTs/PAN fiber mat. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47768.

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Particle Surface Design using an All‐Dry Encapsulation Method

Cited by 75 publications

References 47 publications

Effect of noncovalent chemical modification on the electrical conductivity and tensile properties of poly(methyl methacrylate)/carbon nanotube composites

Effect of noncovalent chemical modification on the electrical conductivity and tensile properties of poly(methyl methacrylate)/carbon nanotube composites

25th Anniversary Article: CVD Polymers: A New Paradigm for Surface Modifi cation and Device Fabrication

Improvement of carbon nanotube dispersion in electrospun polyacrylonitrile fiber through plasma surface modification

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