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Topic: Conductive polymers

In the News (Fri 18 Dec 09)

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	Preparation of electrically conductive polymers - Patent 4418187
		The conductive polymers obtained can be used in the electrical industry for the production of solar cells, for the conversion and fixing of radiation and for the production of electrical and magnetic switches, as well as for the antistatic treatment of plastics.
		The polymers prepared by the process according to the invention are soluble and have intrinsic viscosities of [.eta.]>0.5, ie.
		The electrically conductive polymers prepared according to the invention and having conductivities greater than 10.sup.-2 S/cm may be used for the antistatic treatment of plastics, for the production of solar cells, for the conversion and fixing of radiation and for the production of electrical and magnetic switches.
	www.freepatentsonline.com /4418187.html (1027 words)

	[Report] Conductive Polymers Market Research
		The major objective of this report is to analyze electroactive, or conductive, polymers both inherently conductive polymers (ICPs) and traditional conductively filled thermoplastics in terms of their competitive scenario in specific applications.
		Conductive plastics are made from traditional thermoplastics containing fillers that render them conductive, while ICPs conduct electricity on their own, and electro-optic polymers develop optical characteristics under influence of an applied electric field.
		Although conductive plastics mimic conductivity of metals (particularly copper and steel), insulative resins employing a conductive filler (e.g., metal or carbon powder, or fiber) achieve a measure of conductivity.
	www.the-infoshop.com /study/bc16736_conductive_polymers.html (543 words)

	Reference.com/Encyclopedia/Conductive polymer
		The most notable difference between conductive polymers and inorganic semiconductors is the mobility, which until very recently was dramatically lower in conductive polymers than their inorganic counterparts, though recent advancements in self assembly are closing that gap.
		Conductive polymers are also plastics (which are organic polymers) and therefore can combine the mechanical properties (flexibility, toughness, malleability elasticity, etc.) of plastics with the high electrical conductivities of a doped conjugated polymer.
		Conductive polymers such as DOPA melanin are present in most mammalian tissues where electrical conduction or transduction from light or sound are necessary, including the skin, eye, inner ear, and Midbrain.
	www.reference.com /browse/wiki/Conductive_polymer (1425 words)

	History and Application of Conducting Polymers
		By contaminating the metal/polymer interface with NaCl “the Volta potential of the polymer coating iron surface and the delamination of the polymer coatings in the vicinity of a defect on the metal substrate” was mapped using the SKP (4).
		Adhesion to steel was the largest hurdle to be overcome, but was accomplished by blending the conductive polymers with epoxies in the undoped form and then “doping the coated surface to the conductive state” (5).
		The you dope the polymer to increase its conductivity.
	webpages.charter.net /dmarin/coat (2614 words)

	Conductive Polymers
		Conductive polymers and plastics are increasingly desired for a growing number of sophisticated end-uses.
		Because of their limited solubility in the polymer, anti-static additives tend to migrate to the surface of the part where they are most effective.
		Polymers is very experienced in choosing the right type and combination of additives to deliver the optimum balance of properties and performance for your application.
	www.hitechpolymers.com /Products/conductive.asp (939 words)

	Alan MacDiarmid, Conductive Polymers, and Plastic Batteries
		MacDiarmid's team reasoned that the ability of polyacetylene to conduct electricity was probably promoted by trace impurities contributed by the catalysts involved in the Japanese student's process.
		When polyacetylene was exposed to traces of iodine or bromine vapor, the thin polymer film exhibited still higher electrical conductivity.
		Additional information on Alan MacDiarmid, conductive polymers, and plastic batteries is available in full-text DOE reports and on the Web.
	www.osti.gov /accomplishments/macdiarmid.html (1153 words)

	Applications of conducting polymers
		Because conducting polymers are intensely coloured, only a very thin layer is required for devices with a high contrast and large viewing angle.
		During charging the polymer oxidizes anions in the electrolyte enter the porous polymer to balance the charge created Simultaneously, lithium ions in electrolyte are electrodeposited at the lithium surface.
		In a way, conducting polymers are at the same stage of development as their insulating brothers were some 50 years ago.
	homepage.ntlworld.com /colin.pratt/applcp.htm (1972 words)

	PRESS RELEASE U.S. Conductive Polymer Demand to Reach 370 Million Pounds of Resin Content in 2010 (Site not responding. Last check: 2007-11-06)
		Further conductive polymer growth will be moderated by continued offshore electronics production.
		These and other trends are presented in "Conductive Polymers," a new study from The Freedonia Group, Inc., a Cleveland-based industry research firm.
		Antistatic packaging uses for conductive polymers will be stimulated by the cost effectiveness of conductive bags, pouches, clamshells and other configurations in protecting sensitive electronic devices from static discharges.
	www.marketwire.com /mw/release_html_b1?release_id=152803&tsource=3 (425 words)

	Conductive Polymers
		Conductive polymers are a new group of materials that are finding applications in all type of electronic devices.
		Polymers were discovered to have semi-conductive properties late in the last century (I always wanted to say that), but it hasn't been until very recently that their usefulness are being explored fully.
		Conductive polymers are a group of polymers that, of course, conduct electricity.
	tazman1492.tripod.com /polymer.html (567 words)

	Conducting Polymers
		The literature on conducting polymers as reflected in its top-cited papers shows the diversity of materials that can be used, optical effects achieved, and underlying physical processes.
		The conducting polymers can be induced to transfer electrons to other materials such as Buckminsterfullerene.
		To construct this database, papers were extracted based on title- and author-supplied keywords for conducting polymers.
	www.esi-topics.com /conducting-polymers (515 words)

	Conductive Polymers
		Conductive polymer demand in the US is projected to grow 5.3 percent annually to 550 million pounds (including both resins and additives) in 2010, valued at $1.5 billion.
		Conductive polymers will provide a 435 million pound market for base resins, with advances driven by the development of improved resin grades with cost, processing and performance advantages.
		Conductive polycarbonate demand will be fueled by the resin’s high impact strength, dimensional stability, and good mechanical and electrical properties.
	www.marketresearch.com /product/display.asp?productid=1308246&partnerid=901625821 (443 words)

	Polyaniline Based Conductive Polymers - Advantages
		These polymers become conductive upon partial oxidation or reduction, a process commonly referred to as doping.
		The electrical properties of conductive polymers can be reversibly changed over the full range of conductivity from insulators to metallic conductors.
		Electrically conductive, coloured and transparent thin films and coatings, which would otherwise be difficult to achieve with conventional filled materials, can be made using polyaniline based compositions.
	www.azom.com /details.asp?ArticleID=1267 (376 words)

	Conductive Polymers
		A method was developed for tuning the conductivity of conducting polymers by chemically modifying the substrate with transition metal complexes (mainly ruthenium compounds).
		The use of the polymer as a template for preparing water-dispersible conducting polymer complexes was investigated.
		Polymer Library subscribers can choose to pay for their documents with their debit account, saving 30% on the handling fee for each item.
	www.rapra.net /products_and_services/Books/General/General/Conductive_Polymers.asp (1221 words)

	Conductive Polymers: Ease of Processing Spearheads Commercial Success--3rd Edition:
		Conducting polymers - plastics that conduct electricity - continue to find market niches as they emerge from the research laboratory.
		The key attraction of conducting polymers such as polyaniline, polythiophene, polypyrrole, and polyacetylene over traditional conducting materials is their robustness and ease of processing.
		Also standing to benefit from conducting polymer technology are consumer electronics products where the materials will be used in light-emitting polymers and diodes to power displays in clock radios, audio equipment, televisions, cellular telephones, home appliances, and industrial equipment.
	www.mindbranch.com /Conductive-Polymers-Ease-R152-092 (430 words)

	Chain Growth Method Used To Grow Highly Conductive Polymers - New Technology
		Conducting polymers are remarkable materials that possess the electrical properties of metals yet retain the mechanical properties of polymers.
		Each polymer unit is composed of a chemical ring (thiophene) with a chemical branch on one side.
		Because their properties can be varied, regioregular conducting polymers have the widest range of commercial applications compared with any other conducting polymer, he said.
	www.azonano.com /details.asp?ArticleID=727 (632 words)

	Conductive Polymers
		Electrically conductive materials are usually classified according to their electrical resistance ; ranging from high to null resistance,there are semiconductors, ordinary metallic conductors (also called normal metals), and superconductors.
		The monomers can be identical, or incomplex polymers such as proteins the monomers have one or more substituted chemical groups, this gives them the ability toinhibit other conformations than random coil by the process of self-assembly.
		Because polymers are distinguished by their constituent monomers, polymer chains within a substance are often not of equallength.
	www.altvetmed.com /face/5131-conductive-polymers.html (722 words)

	Zogbi - 01/09/06 (Site not responding. Last check: 2007-11-06)
		Conductive polymer usage in electrolytic capacitors on a mass scale has been well documented since the introduction of the NEOCapacitor by NEC Tantalum Corporation in 1995 (now Tokin Corporation), which was in response to the developmental work of Sony Video Components in Japan.
		In a capacitor anode that employs a conductive polymer cathode, the key to lowering the ESR to its lowest levels, in addition to replacing manganese nitrate or aluminum cathode materials with conductive polymer, is to increase the surface area of the capacitor anode.
		Conductive polymer is also popular in larger case sizes in tantalum, but sales are excellent for portable digital electronics and in audio circuits where volumetric efficiency, low ESR, high capacitance and low piezoelectric effect can be satisfied only by polymer tantalum.
	www.ttiinc.com /object/me_zogbi_20060109.html (1101 words)

	ApplianceMagazine.com \| Conductive Plastics - Electrical Manufacturing
		The Nobel Prize was awarded because conductive polymers are so different from any other polymeric material in their conductivity, but are similar to other plastics in their weight, cost, moldability, and general physical properties.
		The conductive polymers are, at least at present, to be viewed as complementary to silicon and metal devices rather than competitive.
		The dimensionality restriction of the polymers (anisotropy) is because polymers are linear or, occasionally, planar structures, and the delocalized electrons follow the shape of the polymer network.
	www.appliancemagazine.com /editorial.php?article=500&zone=1&first=1 (1924 words)

	Conductive Polymers :: Advanced Materials :: MDMR.net
		Conductive polymers will provide a 440 million pound market for base resins, driven by the development of improved resin grades with cost, processing and performance advantages.
		Conductive polycarbonate demand will be fueled by the resin's high impact strength, toughness, dimensional stability, and good mechanical and electrical properties.
		Conductive polycarbonate demand will be fueled by the resin's high impact strength, toughness, dimensional stability, and good mechanical and electrical properties. Antistatic packaging market best growing The largest conductive polymer market, product components, will exhibit good growth due to opportunities in products such as housings, rollers, trays, connectors and other parts.
	mdmr.net /onesource/catalog/Conductive-Polymers-p-468.html (878 words)

	R&D yields numerous applications for conductive polymers
		These unusual polymers, which are conducting rather than insulating, offer properties such as ion permeability and an alterable chemical structure that allows conductivity to be controlled, which provides exciting possibilities for new applications.
		Devices incorporating conducting polymers require a balance of conductivity, processability, and stability and recent research has been able to optimize all three properties simultaneously.
		Lowering the conductivity resistance of polymers, which is two to three times greater than that of metals, is the main concern of commercializing efforts.
	www.eurekalert.org /pub_releases/2003-04/ti-ryn040903.php (537 words)

	The Tribune, Chandigarh, India - Science Tribune
		The electrically conductive plastics have attracted a substantial amount of attention since they were accidentally discovered two decades ago and the race is on to invent new conductive plastics with many great expectations from them (conducting plastics).
		Conductive polymers are much more electrically conductive than standard polymers but much less than metals such as copper.
		The principal attractions of these polymers over conventional conducting materials are their potential ease of processing, relative robustness, low cost, flexible and lightweight nature.
	www.tribuneindia.com /2001/20011101/science.htm (2491 words)

	Explorer \| Conductive Polymers (Site not responding. Last check: 2007-11-06)
		Conductive polymers also offer design flexibility because they are suitable for both flexible and rigid substrates.
		The commercial potential of conductive polymers has been apparent since their development in the 1970s, but realization of that potential has been slow in coming.
		However, interest in conductive polymers revived near the turn of the century, thanks largely to the successful use of light-emitting polymers in optical displays.
	www.sric-bi.com /Explorer/CP.shtml (383 words)

	Polymers in Electronics - Science - RedOrbit (Site not responding. Last check: 2007-11-06)
		Plastic electronics, based on conductive polymers and flexible substrates, are expected to change the face of the electronics industry, according to a report by industry analysts at NanoMarkets.
		Amodel is a semicrystalline engineering polymer that bridges the cost-performance gap between traditional engineering thermoplastics, such as polycarbonate, polyamides, polyester, and acetals, and higher-cost specialty polymers, such as liquid crystal polymers, polyphenylene sulfide (PPS), and polyetherimide.
		Inherently conductive polymers (ICPs), plastics that have the intrinsic ability to conduct electricity, were at first unstable, expensive to produce, and poor conductors of electricity, and they had physical properties that made integration into commercial systems difficult.
	www.redorbit.com /news/display?id=220710&source=r_science (3620 words)

	Polymers: Time Line of Achievement
		Most polymers are insulators, which is a good thing, because they are often used to insulate electrical wires.
		Conductive polymers are promising because they are much lighter than metals and can potentially be used to make lightweight batteries for electric cars, for example.
		Conductive polymers also have potential use in electronics and solar collectors.
	www.chemheritage.org /explore/poly-time9.html (95 words)

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