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Topic Area: Polymers

Displaying records 471 to 480 of 550 records.
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471. SANS Study of Sulfonate End Group Effect on Polystyrene Self-Diffusion
Topic: Polymers
Published: 10/1/2000
Authors: S D Kim, A Klein, L H Sperling, E M Boczar, Barry J. Bauer
Abstract: Film formation from a latex involves interdiffusion of the polymer chains. The interdiffusion behavior of polystyrene with H-ends, one sulfite-end, and two sulfite-ends are compared via small-angle neutron scattering (SANS) and a direct nonradiative ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851738

472. An Improved Synthesis of Ethyl Alpha-Hydroxymethylacrylate, a Unique Isomeric Analog of HEMA
Topic: Polymers
Published: 8/1/2000
Authors: Joseph M Antonucci, J W Stansbury, Bruce Owen Fowler
Abstract: HEMA is widely used in dental adhesives, bioactive composites and resin-modified glass ionomer cements. In its polymeric forms it is used in a number of biomedical applications, e.g. hydrogels for controlled-release, soft contact lenses, vascular gr ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851708

473. Atomic Force Microscopy Studies of Phase Ordering in Polymer Blends and Clay-Filled Systems
Topic: Polymers
Published: 8/1/2000
Authors: V Ferreiro, Jack F Douglas, Alamgir Karim, G Coulon
Abstract: Many industrial applications require a control of the morphology of thin polymer films. The morphology of thin polymer films depends on many factors : method of formation, tendency of film components to mix or dewet, the crystallization of film comp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851730

474. Dendrimer Templates for the Formation of Gold Nanoclusters
Topic: Polymers
Published: 8/1/2000
Authors: Franziska Grohn, Barry J. Bauer, Y A Akpalu, C L. Jackson, Eric J. Amis
Abstract: Charged poly(amidoamine) (PAMAM) dendrimers are used to create organic-inorganic hybrid colloids in aqueous solution. The formation of gold colloids upon reduction of a gold salt precursor serves as a model reaction to study the influence of reaction ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851679

475. Numerical Simulation of Liquid Composite Injection/Compression Moding. Part 1: Mesh Generation
Topic: Polymers
Published: 6/14/2000
Authors: K M Pillai, C L Tucker, Frederick R Phelan Jr
Abstract: This paper presents a numerical simulation of the injection/compression type of liquid composite molding (LCI/CM), where the fiber preform is compressed to a desired degree at the same time as the resin is being injected into the mold. Due to the po ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851464

476. Critical Issues in the Characterization of Polymers for Medical Applications
Series: NIST Interagency/Internal Report (NISTIR)
Report Number: 6535
Topic: Polymers
Published: 6/1/2000
Authors: Walter G McDonough, Eric J. Amis, J Kohn
Abstract: On June 14, 2000, the New Jersey Center for Biomaterials and the Polymers Division of the National Institute of Standards and Technology (NIST) co-sponsored a one-day workshop on Critical Issues in the Characterization of Polymers for Medical Applica ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851793

477. Surface Morphology Variations in MALDI-TOF-Mass Spectrometry Samples Prepared by Various Techniques Examined by Scanning Electron Microscopy
Topic: Polymers
Published: 6/1/2000
Authors: William R. Blair, Charles Martin Guttman, A A Guiseppetti
Abstract: Continuing interest at NIST (National Institute of Standards and Technology) in producing MALDI (Matrix Assisted Laser Desorption/Ionization) analyses with a mimimum of sample to sample signal variation has led to the comparison of hand spotting, spi ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851759

478. Effect of Water Exposure Cycles on Physical Properties of a Partical-Filled, Epoxy-Based Adhesive
Topic: Polymers
Published: 5/1/2000
Authors: Martin Y Chiang, M Fernandez-Garcia, E M Yorkgitis
Abstract: The effect of cyclic hygrothermal aging on a particle-filled, epoxy-based adhesive was studied using a sequence of water absorption, desorption and reabsorption at different temperatures. Moisture sorption characteristics were explored by measuring t ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851724

479. MALDI-TOF MS Analysis of a Library of Polymerizable Cyclodextrin Derivatives
Topic: Polymers
Published: 4/1/2000
Authors: Rafael L. Bowen, M Farahani, Sabine Hilla Dickens, Charles Martin Guttman
Abstract: Polymerizable cyclodextrin derivatives (PCDs) have been proposed as candidates for use in dental therapeutics (Bowen, 1996 and Bowen and Reed, 1997). Here PCD libraries were synthosized by quasi-random reactions of 6 moles of methacrylic anhydride pl ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851590

480. Physical Aging of Amorphous PEN: Isothermal, Isochronal and Isostructural Results
Topic: Polymers
Published: 4/1/2000
Authors: M L Cerrada, G B. McKenna
Abstract: The viscoelastic and physical aging responses have been analyzed for an amorphous poly(ethylene naphthalate) (PEN) using uniaxial tension stress relaxation experiments. It is known that PEN exhibits a strong {beta} relaxation that overlaps the {alp ...
http://www.nist.gov/manuscript-publication-search.cfm?pub_id=851586



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