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Topic: Plasma functionalization

Related Topics

Plasma processing

Chemical vapor deposition

Plasma polymerization

Plasma

Carbon nanotube

Pathping

Clemson University

Biomaterial

La Plume Township, Pennsylvania

Bechamel

	4th STATE - What is Plasma?
		Functionalizing the surface to provide both compatibility, as well as reactivity, to the paint, ink or adhesive is readily accomplished via plasma surface treatment.
		Plasma processing is synonymous with semiconductor manufacture used in the etching of both the conductive and dielectric layers of the semiconductor active device, as well as in the removal of photoresist patterning between the successive layers.
		Although plasma processing has been used for several decades to enhance the performance and permanence of adhesive bonds and paints to plastics and rubbers, it is still in its infancy as a general process technology within the plastics industry.
	4thstate.com /publications/WhatIsPlasma.htm (1949 words)

	Hybrid polymer film - Patent 6083628
		Plasma treatment with gases from the group of N.sub.2, Ar, Ne, O.sub.2, CO.sub.2, and CF.sub.4 is used to functionalize the base film, to further improve the cross-linking of the acrylate film surface, and to remove surface charge, which improves winding and unwinding of the hybrid film.
		The plasma treatment was found to be advantageous for two reasons, (a) it removes adsorbed air and moisture from the surface of the PP film, which enhances the degree of cross-linking on the PP/acrylate interface, and (b) it functionalizes the PP film, which facilitates wetting of the acrylate monomer.
		Since barrier properties as a function of elongation is difficult to measure, the cracking of the aluminum as a function of elongation was measured indirectly by measuring the resistivity of the aluminum.
	www.freepatentsonline.com /6083628.html (12281 words)

	Low-Temperature Plasma Functionalization of Carbon Nanotubes
		A plasma of the chemical precursor of the molecular groups to be deposited is generated in the precursor chamber.
		The plasma flows from the precursor chamber to the target chamber, wherein the carbon nanotubes to be functionalized are mounted on a substrate.
		A Hydrogen Plasma is generated in the precursor chamber and flows into the target chamber, where hydrogen atoms become chemically bonded to the carbon nanotubes.
	www.nasatech.com /Briefs/May04/ARC14661-1.html (627 words)

	CO2, H2O, and CO2/H2O Plasma Chemistry for Polyethylene Surface Modification (Site not responding. Last check: 2007-10-30)
		During a cold plasma treatment, a polymer surface is involved in many reactions, such as degradation and functionalization.
		Spectrochemical quantification and XPS analysis measure the surface functionalization whereas the plasma composition and plasma-polymer interactions are analyzed by mass spectrometry.
		During the polyethylene treatment with CO plasma, evidence of degradation is also shown by mass spectroscopy (atomic and molecular hydrogen formation in the plasma phase).
	pubs.acs.org /cgi-bin/abstract.cgi/langd5/2002/18/i06/abs/la011481i.html (280 words)

	Program for Plasma Polymerization/Deposition Symposium
		Plasma polymerization on metal using DC glow discharge was carried out for the hydrophilic surface formation using hydrocarbon reactive monomer in various deposition time, voltage, current, and pressure.
		Plasma polymerisation is the relevant process in the "plasma on" period whereas a recombination polymerization of fragmented monomer molecule radicals occurs when the plasma is switched off.
		Plasma copolymerisation of a "functionalised" monomer with a hydrocarbon "diluent" comonomer may be used to fabricate surfaces of controlled surface chemistry.
	www.mstconf.com /plasabs.htm (4931 words)

	Openair® plasma surface functionalization
		Plasma is a higher energy form of matter that makes up the sun and every object we can see outside the solar system.
		Plasma is a form of matter that has higher energy than the corresponding solid, liquid and gas.
		In plasma the energy is also due to electrons being split from the atomic nucleus creating ions and free electrons.
	www.plasmatreat.com /plasma_technology.htm (947 words)

	Plasma processing - Wikipedia, the free encyclopedia
		Plasma processing is a plasma-based material processing technology that aims at modifying the chemical and physical properties of a surface.
		Related topics are plasma chemistry, chemical vapor deposition, and physical vapor deposition processes like sputtering, plasma ion doping, and reactive ion etching.
		This page was last modified 13:53, 22 February 2006.
	en.wikipedia.org /wiki/Plasma_processing (74 words)

	[No title] (Site not responding. Last check: 2007-10-30)
		Plasma functionalization and reorientation of macromolecules at polymer surfaces
		The functionalization of polypropylene surfaces and octadecyltrichlorosilane layers with oxygen-containing groups, and changes in molecular and supermolecular orientations resulting from low pressur oxygen glow discharge plasma treatment were investigated.
		The main results are the fast reorientation under plasma exposure, and the discrepancy between the slow increase in the functional group concentration and the fast improvement in the maximum adhesion to polyurethane.
	www.ruhr-uni-bochum.de /pc1/deutsch/pub/66.htm (128 words)

	Surface functionalization - Wikipedia, the free encyclopedia
		Surface functionalization introduces chemical functional groups to a surface.
		This way, functional materials can be designed from substrates with standard bulk material properties.
		In both cases, plasma processing technologies were successfully employed.
	en.wikipedia.org /wiki/Surface_functionalization (75 words)

	JobShop.com Technical Article - Surface Treatment Surface Sciences, Inc. Brea CA California (Site not responding. Last check: 2007-10-30)
		The principal function of these types of treatments is to clean and modify the surface of their materials to enhance the adhesion properties of inks, glues, paints, and coatings.
		Plasma is the fourth state of matter; a quasi-neutral cloud of ionized gas.
		This plasma is produced by high voltage and the close proximity of two metal plates (electrodes) in atmosphere.
	www.jobshop.com /techinfo/papers/surfacetreatment.shtml (1130 words)

	[No title]
		Functional properties and performance characteristics, such as thermal optical properties (differential solar absorptance and thermal emittance representing the thermal optical performance of thermal control paints) and surface resistivity characteristics of pristine, surface modified, and tested materials were verified.
		The emission from atoms and ions of this plasma is analysed by a spectrometer.
		Plasma modification of polymer surfaces, particularly functionalization or plasma polymerization with functional group-carrying monomers are useful techniques to adjust the hydrophilicity, adsorption, and wetting properties of polymeric surfaces.
	www.mstconf.com /SurfMod5-abs.htm (12989 words)

	Openair¨ plasma for bonding
		Plasma, where even hard to bond plastics like polypropylene (PP) or partially fluorinated compounds show clear improvements in adhesion, in some cases by 30 to 50 fold.
		This occurs because the molecular chains on the surface are oxidized, typically increasing oxygen content to between 20 and 35%.
		But with an adhesive reformulated to leverage the functionalization of plasma, the strength increased by a factor of 12, and more than 3 times better than had ever been achieved before using mechanical surface preparation.
	www.plasmatreat.com /uses_2.htm (539 words)

	Final Report: Surface Functionalization of Packaging Films to Promote Adhesion of Aqueous Based Inks
		Surface functionalization is achieved by an appropriate combination of plasma treatment and thin (sub-micron) acrylate coating within a vacuum environment.
		Sigma Technologies was indeed able to alter the surface functionality of OPP films to the extent that water-based ink formulations were observed to adhere well to the functionalized surfaces without sacrifice of ink deposit quality parameters.
		The hollow cathode, magnetically focused plasma and acrylate coating processes and equipment configurations employed to achieve this positive result are considered proprietary and the acrylate coating process in particular enjoys substantial patent protection[5,6].
	www.pneac.org /compliance/Ink-Paper/frsfopftpaoabi.cfm (1131 words)

	Atmospheric Plasma and Helium
		Plasma is created by the electrical or thermal ionization of a gas.
		A plasma is a partially or fully ionized gas consisting of electrons, ions, neutral species, and photons.
		Because plasma chemistry can be tailored for specific applications, plasmas can be used to modify chemical groups on surfaces, add coatings to materials, clean surfaces and much more.
	www.praxair.com /praxair.nsf/0/a83343c384d59a9185256d5e00550e30?OpenDocument (377 words)

	biocompatible interfaces (Site not responding. Last check: 2007-10-30)
		Low pressure plasma treatments provide a very powerful means to create reactive functions on the rather inert bulk polymers.
		The plasma laboratorywill be supplemented in 2000 by an additional processor designed for plasma depostion of thin PTFE-like layers.
		Maleic anhydride copolymer films are currently modified by chemical functionalization and subsequently used as model substrates for studing the impact of cofunctions on immobilization of globular model proteins.
	www.ipfdd.de /research/res16/res16.html (1634 words)

	OhioLINK ETD: NARASIMHADEVARA, SUHASINI
		The problem arises because nanotubes occur in clumps and are difficult to isolate and align to a reasonable degree, and the nanotubes must also be functionally modified to securely bond to the matrix material.
		Plasma functionalization, surfactant treatment, controlled sonication, high speed shear mixing, and high pressure casting are used to exfoliate the nanotube bundles.
		A good interface between the nanotubes and the matrix is obtained by modifying the surface chemistry of the nanotubes by attaching “chemical handles” to the surface of the nanotubes that can also bond well to the matrix.
	www.ohiolink.edu /etd/view.cgi?ucin1119466758 (318 words)

	Influence of plasma functionalization of poly(propylene) with acrylic acid on the nucleation of CaCO3
		Influence of plasma functionalization of poly(propylene) with acrylic acid on the nucleation of CaCO3
		Poly(propylene) surfaces were modified by polymerization of acrylic acid using an RF plasma technique.
		Whereas a stable and reproducible hydrophilicity is obtained even after short treatment times, the thickness of the deposited layer, and thus the concentration of -COOH functional groups per substrate surface area, increases with plasma exposure time.
	publica.fhg.de /documents/N-22101.html (224 words)

	Plasma functionalization of polypropylene with acrylic acid
		But often the surface chemistry has to be modified by introducing special chemical functionalities like carboxylic groups or by coating the PP with thin films, e.g.
		The radio frequency plasma technique was used for functionalization and coating of PP by using acrylic acid as monomer gas.
		After optimization of the plasma parameters, high concentration of carboxylic groups as well as solvent-stable thin films with good adhesion to the PP substrates could be obtained.
	publica.fhg.de /documents/B-89135.html (272 words)

	Protein-Rejecting Ability of Surface-Bound Dextran in End-on and Side-on Configurations - Comparison ... (Site not responding. Last check: 2007-10-30)
		Cold plasma chemistry at the same time allows the surface modification even of the most inert substrates; the active species of the discharge have energy levels that are comparable with common bond energies of organic structures and organic structures containing main group elements.
		The plasma functionalization approach is also a heterogeneous, dry reaction mechanism which involves minimal amounts of reactants.
		Silicon-chlorine groups generated by the plasma functionalization easily react with —OH functionalities of PEG molecule in the absence of moisture.
	homepages.cae.wisc.edu /~hongquan/resume/papers/PEG.doc (4108 words)

	Electronic Devices and Photonics
		It is measured as a function of the photon energy above the bandgap of the Ge-Si superlattice.
		Organo-functionalized thiols are currently being used to functionalize the Au surface of the SPR sensor.
		The concept of the fluid viscosity measurement is derived from the fluid's frictional damping on the surface of the immersed vibrating fiber optic probe.
	www.ee.washington.edu /research/riee/riee96/newch6.html (7511 words)

	Sarmadi, Majid
		Our research suggests that by simulating the plasma induced fragmentation reactions under low-energy electron MS dissociation processes, valuable information can be obtained regarding the predominant (80 to 90 percent) ionic fragments in the plasma chamber.
		This information is useful for better understanding of the mechanisms of plasma induced molecular fragmentation and polymer formation processes that can be used for proper selection of starting compounds or their mixtures for synthesizing the desired macromolecular structures.
		Our research in the area of plasma and corona modification of solid surfaces involves both natural and synthetic polymeric materials such as films, fabrics, webs and composites.
	www.engr.wisc.edu /interd/msp/faculty/sarmadi_majid.html (626 words)

	Atmospheric plasma functionalization of chemically activated MWCNTS (Site not responding. Last check: 2007-10-30)
		Currently, functional groups can be introduced onto nanotube surfaces either through conventional solution processing, thermal treatment or vacuum techniques.
		We have developed an atmospheric plasma dielectric barrier discharge (DBD) process for attaching specified molecular groups to carbon nanotubes without involving the use of wet chemicals, high temperatures and high vacuum.
		We demonstrate this technique by successfully functionalizing MWCNTs with N, Cl and F groups using ammonia or trichlorotrifluoroethane vapours.
	www.fy.chalmers.se /conferences/nt05/abstracts/P257.html (214 words)

	Cold Plasma Treatment: Surface or Bulk Modification of Polymer Films? (Site not responding. Last check: 2007-10-30)
		Reactive species of nitrogen cold plasma could interact with a polymeric surface, leading to an important surface functionalization (mostly as amino group attachment) and consequently to a surface having a Lewis base character.
		Under certain conditions, the surface functionalization is not the only modification; a morphologic transformation is also noticed.
		Illustration is given with different plasmas for which the VUV emission is important.
	pubs.acs.org /cgi-bin/abstract.cgi/mamobx/1997/30/i15/abs/ma961585d.html (193 words)

	Plasma modification of sisal and high-density polyethylene composites : effect on mechanical properties
		Plasma modification of sisal and high-density polyethylene composites : effect on mechanical properties
		The functionalized polyethylene (70%) and sisal (30%) were compounded on four different ways using thermokinetic mixer and injected molded into composites specimens for test.
		Some improvements in mechanical properties of the composites due to the plasma treatments were achieved.
	www.treesearch.fs.fed.us /pubs/8872 (328 words)

	Group A Books (Site not responding. Last check: 2007-10-30)
		Plasma surface modification of Poly(tetrafluoroethylene) substrates: A route for electroless plating
		Chemically well-defined surface functionalization of polyethylene and polypropylene by pulsed plasma modification followed by grafting of molecules
		Plasma treated polycarbonate as substrate for culture of adherent mammalian cells
	www.adhesionsociety.org /pubs/books/bookA011.htm (731 words)

	Plasma Processes and Polymers
		Contributions cover the fields of plasma deposition; plasma treatment of polymers and other organic compounds; plasma processes under partial vacuum and at atmospheric pressure; biomedical, textile, automotive, and optical applications; surface treatment of bulk materials, clusters, particles and powders; and more.
		Plasma Processes and Polymers...is a comprehensive collection of 37 peer-reviewed articles which were presented as contributions at ISPC-16, in several different sessions dealing with low-temperature plasma processes.
		Target Audience: Academic and industrial researchers and technologists throughout the plasma community; also those concerned with plasma applications in various industrial applications.
	www.polysurfacesbookstore.com /pages/3965.html (404 words)

	OTC Technology: Surface Functionalization of Polymers for Drug Delivery (Site not responding. Last check: 2007-10-30)
		Unfortunately, both of these methods have poor reproducibility, they are inefficient, and they have complex processing requirements and toxicity issues associated with the chemicals used to modify the polymers.
		By utilizing APG plasma, functionalization occurs on the exposed surface area of the polymer.
		This unique plasma works by allowing particle suspension in the gas phase, which in turn allows the surface particles to be charged and chemically functionalized.
	www.otc.utexas.edu /ATdisplay.jsp?cat=14&id=518 (184 words)

	Biomedical Polymers Laboratory (Site not responding. Last check: 2007-10-30)
		Tissue engineering - Tailoring of polymers for scaffolding and regeneration of functional human tissue, especially arterial reconstruction.
		Plasma surface treatments - Surface modification of polymers by means of polymerization or functionalization under plasma conditions, for biomedical purposes.
		In light of the serious problems posed by the arterial prostheses used to replace diseased or damaged arteries in humans, my group (in collaboration with Prof.
	chem.ch.huji.ac.il /applsci/ac/cohn/index.htm (274 words)

	[No title]
		Chiper, A.S. Spectroscopic Diagnostics for a DBD Plasma in He/Air and He/N
		Diegelmann, C. Influence of Plasma Functionalization of Poly(propylene) with Acrylic Acid on the Nucleation of CaCO
		Sciarratta, V. Influence of Plasma Functionalization of Poly(propylene) with Acrylic Acid on the Nucleation of CaCO
	www.wiley-vch.de /vch/journals/2410/2410_tii_04.html (679 words)

	Wiley::Plasma Processes and Polymers: 16th International Symposium on Plasma Chemistry Taormina, Italy June 22-27, 2003
		11 Introduction of Acidic Functional Groups onto the Surface of Activated Carbons by Atmospheric-Pressure Nonthermal Plasma (Satoshi Kodama and Hidetoshi Sekiguchi).
		24 Plasma Sterilisation: Mechanisms Overview and Influence of Discharge Parameters (Francois Rossi, Riccardo De Mitri, Sophie Bobin and Rosy Eloy).
		34 Dust Particles in the dc Glow-Discharge Plasma: Self-organization and Peculiarities of Behavior (V.E. Fortov, A.G. Khrapak, V.I. Molotkov, O.F. Petrov, M.Y. Poustylnik, V.M. Torchinsky).
	www.wiley.com /WileyCDA/WileyTitle/productCd-3527404872,descCd-tableOfContents.html (1011 words)

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