
	Where results make sense

Topic: Semi flexible rod polymer

Related Topics

Rod Serling

Rod Laver

Rod Steiger

Rod Carew

lightning rod

Rod Taylor

hot rod

rod cell

Rod Roddy

Rod Blagojevich

Rod Dedeaux

In the News (Sun 27 Dec 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Rigid-rod polymers - Patent 5976437
		The rigid-rod and segmented rigid-rod polymers of the present invention when used in a blend with a flexible polymer are the primary source of tensile strength and modulus of the resulting molecular composite.
		The polymers of the present invention comprise a rigid-rod backbone comprising at least about 25 phenylene units, preferably at least about 100 phenylene units, wherein at least about 95%, and preferably 99%, of the monomer units are coupled together via 1,4 linkages and the polymer and its monomers are soluble in a common solvent system.
		Polymer pairs which are not miscible can often be made miscible by addition of a third polymer, typically a low MW copolymer having segments similar to the polymers to be blended.
	freepatentsonline.com /5976437.html (15926 words)

	Flexible Pvc Pipe (Site not responding. Last check: 2007-09-16)
		Flexible single master operation 1: '''Flexible single master operation''' (FSMO, F is sometimes 16: code>ntdsutil, hence the use of the word ''flexible '' in the name.
		Flexible organic light-emitting diode 1: A FOLED is a term used for a flexible OLED.
		Flexible electronics 1: s the substrate instead, the entire system can be flexible as the films deposited on top of the substrate is 3: of a backlight for flexible displays, making a Flexible organic light-emitting diode display.
	www.witchware.com /File/37121-Flexible.Pvc.Pipe.Html (583 words)

	Polymer Extrusion (Site not responding. Last check: 2007-09-16)
		The polymers used are typically thermoplastics and are melted by heating the barrel.
		Thermosetting polymers and elastomers can be fed, mixed with additives and crosslinking initiated by the heat in the barrel, usually completing the crosslinking after passing through the die.
		That is the elastic nature of the polymer is to remember its shape, resist change and recover the shape it had prior to the distortion imposed by the die.
	www.engr.uconn.edu /cheg/polymer/c256hnp.htm (1614 words)

	Polymeerikemian laboratorio (Site not responding. Last check: 2007-09-16)
		The effect of the flexibility on the translational and rotational diffusion in the nematic phase is studied.
		Polymer /liquid crystal composites have a great potential for applications in electronics and there are several types of such composites developed.
		It was observed that polymer component in the LC solvent decreases the anisotropy of translational diffusion of mesogens.
	www.chemistry.helsinki.fi /polylab/research/pol_sim (843 words)

	The smectic phase in a colloidal suspension of semi-flexible virus particles
		Although the particles are charged, it is possible to approximately account for the electrostatic repulsion by considering the particles to have a larger, effective hard rod diameter determined by calculating the excluded volume of a pair of rods averaged over their angular distribution function [1,26,27].
		In the isotropic phase the angular correlation between rods is short ranged [28], while in the nematic the rods are parallel, on average, to a given direction.
		, the flexibility is important enough to narrow the width of the coexistence region (w) by a factor of three from the rigid rod limit and suppress the isotropic - cholesteric transition to higher concentrations.
	www.elsie.brandeis.edu /seth/smectic/fdprlsm3.html (2534 words)

	Catheter obturator with automatic feed and control - Patent 5064415
		Preferred polymers for the rod are the polyolefins, such as polyethylene or polypropylene, and polytetrafluoroethylene, polyester, polyamide, polyurethane, polystyrene, polyvinyl chloride and liquid crystal polymers.
		With this invention by contrast, an obturator rod is fed into the already in place catheter for the purposes of occluding the lumen of the catheter, as desired, without having to use the conventional expensive and cumbersome procedures of heparin or saline locks.
		Obviously, when the rod swells, the dimension of the rod with the coating increases and this has been found to be approximately an increase of one-half the thickness of the coating in place prior to any swelling.
	www.freepatentsonline.com /5064415.html (3765 words)

	Welcome to The Rowland Institute at Harvard
		Fluctuations of the semi-flexible polymers dissolved in a nematic phase
		We study the fluctuations of semi-flexible polymers dissolved in a nematic liquid crystal.
		A coil to rod transition of polymers with persistence length larger then 0.2 µm is observed by changing the background phase from isotropic to nematic.
	www.rowland.org /rjf/dogic/nematicphase.php (233 words)

	Mesh-covered bolus - Patent 4326522
		The bio-erodible matrix is preferably composed of an absorbable or dissoluable polymer or polymers intimately mixed with or coating the medicament.
		The major requirement is that the polymers be slowly absorbed or dissolved in body fluids so that they will continuously expose new surfaces containing the medicament as they slowly erode and release the medicament particles into the fluids in the rumen over a long period of time.
		The inner core heavy metal rod 12 is surrounded by an outer core of an absorbable polymer matrix 14 containing admixed therein particles of medicament 16, and which outer core cylinder surface 18 is surrounded on all sides by a sleeve-like, fine, polyester mesh 20.
	www.freepatentsonline.com /4326522.html (2613 words)

	Arjun G. Yodh Colloquium, October 18, 2004 (Site not responding. Last check: 2007-09-16)
		DNA, Actin, wormlike micelles, and neurofilaments) in aqueous suspensions of rods.
		The polymers undergo a coil-rod transition when the background solution changes from the isotropic phase to the nematic phase [1].
		NIPA polymer is temperature-sensitive so that we can easily tune the relative importance of polymer-polymer, rod-rod and rod-polymer interactions in solution.
	www.mse.uiuc.edu /info/seminars/10-18-04colloquium.html (271 words)

	Nylon Sheet Manufacturer,Nylon Rod Manufacturer,Cast Nylon Sheet,Cast Nylon Rod,Cast Polyurethane Sheet,Cast ... (Site not responding. Last check: 2007-09-16)
		Rod: 15mm OD to 600mm OD in 300mm and bigger lengths upto1000mm.
		Rod sizes are comprised from as low as 6mm to 150mm diameters in 300mm, 1000mm and bigger lengths as per the specifications of the customer.
		The polymer is resistant to abrasion, corrosion, chemical and moisture.
	www.indiamart.com /perfect-polymers (751 words)

	Catheter obturator with automatic feed and control - Patent 4976697
		By contrast with the invention here, the obturator rod is anchored, in one embodiment, to a reel acting as a cam which is then used to insert or withdraw the obturator rod, as required into the attached catheter.
		Positioned in passage 44 is an obturator rod 32 which extends rearwardly out through an o-ring cap 28 having a sealing o-ring 26, to a snap cap 36 for manipulating and feeding the obturator rod 32 to and through the lumen 46 in catheter 22 in order to occlude completely lumen 46, as desired.
		For example, for a rod used in conjunction with a 20 gauge catheter the diameter of the rod will be within the range of between about 0.005 and 0.028 inches, preferably 0.022 and 0.026 inches.
	www.freepatentsonline.com /4976697.html (4047 words)

	CPIMA - University of Stuttgart, Germany
		There are several research areas to be explored in collaboration with the Gast and Fuller groups that are related to the conformation of rod-like macromolecules in solution and their rheological behavior as well as their miscibility with coil macromolecules in ionomer blends.
		The rod polymers as well as the ionomer blends have been synthesized and characterized at Prof.
		As to the collaboration with the Gast group, the aim is to study the molecular structure and dynamics of rigid, semi-rigid and flexible polymer molecules in solution, gels and blends by combining a variety of light and x-ray scattering techniques.
	www.stanford.edu /group/CPIMA/science/stuttgart.html (347 words)

	PHILLIP H. GEIL (Site not responding. Last check: 2007-09-16)
		Two types of LCPs are under investigation, several series of polyesters containing flexible (aliphatic) segments of varying length and a number of semi-rigid homo- and co-polymer polyesters.
		The flexible backbone LCP polyesters have been shown to crystallize from the LC state by chain folding, similar to that observed for normal flexible polymers such as polyethylene, for flexible segment lengths as small as 4 CH2s; this occurs even though one of the polyester series is a random terpolymer.
		In current films, which approach those of low density polyethylene in properties, the zein has remained folded (in the biological sense); desired is a method to unfold and orient the molecules.
	www.mse.uiuc.edu /faculty/Geil.html (1140 words)

	MATERIALS RESEARCH (Site not responding. Last check: 2007-09-16)
		Additionally, we outline the synthesis of a fd-polymer complex and show that polymers covalently attached to the virus effectively increase the diameter of the rods.
		By changing the ionic strength it is possible to observe the crossover from the regime where the rods are electrostatically stabilized to where they are sterically stabilized by repulsion between virus-bound polymers.
		The depletion interaction creates an attractive interaction between the rods and when enough polymer is added we observe a direct isotropic - smectic transition, rather that the sequence isotropic - nematic - smectic that occurs with increasing virus concentration in the absence of polymer.
	www.cco.caltech.edu /~acers/MRL/Flyer1902fraden.html (327 words)

	[No title] (Site not responding. Last check: 2007-09-16)
		This is a polymer formed from the four bases adenine, cytosine, guanine, and uracil.
		This design is mechanical in nature, and is based on sliding rods that interact by blocking or unblocking each other at "locks." This design has a size of about 5 cubic nanometers per "lock" (roughly equivalent to a single logic gate).
		Their successes, however, are usually small in size (with the notable exception of various polymers).
	discuss.foresight.org /~pcm/nano/rutgers/FAQ (3566 words)

	[No title]
		That is, the motion of conventional flexible substrates must be constrained to ensure that they continue to work over their expected lifetime.
		The entire flexible MCM measures 0.600 inch X 0.300 inch, is 0.016 inch thick, and has a permissible bending radius of curvature of about 50 centimeters (cm).
		In electrospinning, the force of electrostatic repulsion is used to generate a fine, splaying jet of polymer (from a droplet of melt or solution) that forms a mesh at an electrically grounded collection surface.
	www.research.ibm.com /journal/sj/393/part3/post.txt (10235 words)

	Session YC13 - Brushes, Surfaces, and Adsorption.
		We show that for rigid rod side chains the ratio between the persistence length and the diameter increases approximately linearly as a function of the rod length.
		In contrast to that, in the case of flexible side chains, this ratio is approximately independent of the length of the side chains.
		The behavior of polymers at interfaces or in confined spaces is a problem of significant interest from both a fundamental and technological perspectives.
	flux.aps.org /meetings/YR99/CENT99/abs/S9180.html (2588 words)

	Carsonite International
		The fencing is strong enough to block spectators from entering restricted areas, but its flexibility helps ensure that any athlete who might run into the fence would not be injured.
		Three fence post options are available: Carsonite original post for youth events or where a highly flexible barrier is needed; FlexRod® semi-flexible post for adult events, crowd control, and work zones; and Hi-Impact with 360-degree flexibility in a padded design for extra impact protection.
		The surface-mounted Super Duck® delineator is designed with a unique support rod that enables it to withstand numerous impacts on taxiways and parking areas without damage.
	www.carsonite.com /newsroom/newsroom.html (4176 words)

	CHEMISTRY, Wichita State University, Kansas, United States
		The Polymer Degradation group at WSU is one of only a few in the US able to routinely examine both kinetic and mechanistic aspects of polymer degradation.
		Polymers exposed to heat and oxygen over a long period of time (ex.
		The mechanisms and extent of thermo-oxidative deterioration in field aged polymer can be evaluated spectroscopically, to make residual lifetime predictions and identify potential failures.
	webs.wichita.edu /?u=chem&p=/People/Stevenson/main (356 words)

	D1 (Site not responding. Last check: 2007-09-16)
		Modeling the rod as a tube to “simplify” the picture and obtain greater information on the motions of the tubes as well as dynamics of tubes relative to other tubes in the unit volume.
		The first step will be to model a single rod and determine the parameters needed to measure and vary keeping the axial ratio and polymer dimensions stable for the system of study.
		Russo, a named full professor within the macromolecular studies group in the department of chemistry, will provide direction and advice on theoretical aspects of semi-flexible rod polymers as well as experimental results derived in his research group in the past.
	macro.lsu.edu /igert/ResearchDescriptionsAsWordDocuments/baylis.htm (1579 words)

	Semi-flexible rod polymer - Wikipedia, the free encyclopedia
		Semi-flexible rod polymers are a kind of conductive polymers.
		This article about polymer science is a stub.
		This page was last modified 16:29, 18 September 2005.
	en.wikipedia.org /wiki/Semi-flexible_rod_polymer (51 words)

	[No title]
		These theories agree well with the existing experimental data and give a clear physical explanation to the drastic effect of the chain flexibility on the transition.
		A. Tkachenko, Isotropic - Nematic - Smectic: Importance of Being Flexible, Physica A 249, 380 (1998).
		A. Tkachenko, Effect of Chain Flexibility on Nematic - Smectic Transition of Semiflexible Chains, Phys.
	www-personal.umich.edu /~alexei/order.html (281 words)

	Flexible Polyurethane Foam (Site not responding. Last check: 2007-09-16)
		1) " Flexible" -- In re: Flexible Polyurethane Foam
		A polyurethane is any polymer consisting of a chain of organic units joined by urethane links.
		The most general definition of foam is a substance that is formed by trapping many gas bubbles in a liquid or solid.
	www.witchware.com /File/25520-Flexible.Polyurethane.Foam.Html (816 words)

	(WO 01/68745) LIQUID CRYSTALLINE POLYMERS (Site not responding. Last check: 2007-09-16)
		The liquid crystalline polymers can be used in the controlled release or retention of substances encapsulated in the polymers.
		The polymer can be in a variety of forms including films, film laminants, and microparticles.
		In a preferred embodiment, the LC polymers are used to encapsulate therapeutic, diagnostic, or prophylactic agenst for use in medical or pharmaceutical applications.
	wipo.int /cgi-pct/guest/getbykey5?KEY=01/68745.010920&ELEMENT_SET=DECL (318 words)

	Artificial Muscle Research Institute: Paper: Ionic Polymer-Metal Composites (IPMC) As Biomimetic Sensors, Actuators ... (Site not responding. Last check: 2007-09-16)
		In this paper the focus is on the application of the IPMC sensor on quasi-static or dynamic displacement sensing where the response of the sensor against large imposed displacements was investigated.
		This gripper was driven by a 5 volts square wave signal at a frequency of 0.1 Hz to allow sufficient time to perform a desirable demonstration of the capability of the Gripper -- opening the gripper fingers, bringing the gripper near the collected object, closing the fingers and lifting an object with the arm.
		An introduction to ionic polymer metal composites as biomimetic sensors and actuators were presented.
	www.unm.edu /~amri/paper.html (8348 words)

	UMSI 2003 Annual Report: David C. Morse
		These researchers are interested in computational polymer physics, which focuses on elucidating molecular origins of both equilibrium and dynamics behavior of polymer fluids.
		The simulations use a worm-like chain model that describes a polymer as a continuous contour with an elastic resistance to bending and a constraint prohibiting longitudinal compression or extension.
		Among the molecules that are well described by this model are many biopolymers, including deoxyribonucleic acid, collagen, and cytoskeletal filaments such as actin, as well as many synthetic polymers that exhibit a nematic liquid-crystalline phase in solution, such as Kevlar.
	www.msi.umn.edu /general/Reports/ar2003/depts/IT/morse.html (432 words)

	Semi-flexible rods (polyaniline)
		Other related polymers include poly(p-phenylene oxide) (PPO) and poly(p-phenylene sulfide) (PPS) although their best reported conductivities are very limited.
		The chemical and structural flexibility surrounding the amine/imine nitrogen linkages in PANI creates enormous diversity.
		49] from a direct scattering study of the amorphous polymer are also consistent with this more complex intrachain ring structure.
	romano.physics.wisc.edu /winokur/handbook/node7.html (437 words)

	Atco Flexible Duct (Site not responding. Last check: 2007-09-16)
		ATCO Ltd. is an Alberta based corporation with operating subsidiaries inelectric and natural gas utility operations, independent power operations, production, storage, processing, gathering, deliveryof natural gas, technical facilities management for the industrial, defence and transportation sectors, the manufacture, sale andleasing of industrial shelters and industrial noise abatement technologies.
		Flixible single master operation 1: '''Flexible single master operation''' (FSMO, F is sometimes 16: code>ntdsutil, hence the use of the word ''flexible '' in the name.
		Flexibls electronics 1: s the substrate instead, the entire system can be Flexibpe as the films deposited on top of the substrate is 3: of a backlight for displays, making a Felxible organic light-emitting diode display.
	www.bodawg.com /point/36495-atco-flexible-duct.html (433 words)

	Poly(p-phenylene vinylene)
		PPV is the only other member within this family of conducting polymers that has been successfully processed in film form to yield oriented samples with extremely high levels of crystallinity.
		The presence of para bonded phenylene rings in the main chain construction increases the complexity of the intrachain structure.
		However the steric repulsion between, in the case of PPV, adjacent vinylene and phenylene ring hydrogen atoms favors a non-planar construction.
	romano.physics.wisc.edu /winokur/handbook/node6.html (295 words)

Try your search on: Qwika (all wikis)