Bibliografias temáticas / Polymer types

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Literatura científica selecionada sobre o tema "Polymer types"

Autor: Grafiati
Publicado: 7 de junho de 2025
Última modificação: 2 de agosto de 2025

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Artigos de revistas sobre o assunto "Polymer types"

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Shamsuri, Ahmad Adlie, Siti Nurul Ain Md. Jamil, and Khalina Abdan. "A Brief Review on the Influence of Ionic Liquids on the Mechanical, Thermal, and Chemical Properties of Biodegradable Polymer Composites." Polymers 13, no. 16 (2021): 2597. http://dx.doi.org/10.3390/polym13162597.

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Biodegradable polymers are an exceptional class of polymers that can be decomposed by bacteria. They have received significant interest from researchers in several fields. Besides this, biodegradable polymers can also be incorporated with fillers to fabricate biodegradable polymer composites. Recently, a variety of ionic liquids have also been applied in the fabrication of the polymer composites. In this brief review, two types of fillers that are utilized for the fabrication of biodegradable polymer composites, specifically organic fillers and inorganic fillers, are described. Three types of
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Ansari, Aysha Praveen, Anamika Saini, Ila Joshi, et al. "Conducting Polymers: Types and Applications." International Journal of All Research Education and Scientific Methods 13, no. 01 (2025): 01–19. https://doi.org/10.56025/ijaresm.2024.121224005.

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Conducting Polymers (CPs) represent a unique class of materials that combine the electrical conductivity of metals with the mechanical properties and processability of conventional polymers. This paper provides a comprehensive review of the various types of conducting polymers, including Polyaniline (PANI), Polypyrrole (PPy), Polythiophene (PT), and their derivatives. The synthesis techniques of these polymers, such as Chemical, Electrochemical, and Template-Based Methods, are discussed, highlighting their impact on the polymer's structure, conductivity, and functional properties. Each polymer
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Sazonov, Aleksey, and Larisa Fomina. "TYPES OF POLYMERS FOR FUEL CELL MEMBRANES." Modern Technologies and Scientific and Technological Progress 2024, no. 1 (2024): 62–63. http://dx.doi.org/10.36629/2686-9896-2024-1-62-63.

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The work reflects a list of polymer materials used in the world to create proton-conducting mem-branes for low-temperature fuel cells. An analysis of the structure, physicochemical properties, condi-tions for the synthesis of polymers and operational characteristics of the membranes obtained on their basis was carried out
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Kim. "Influence of Polymer Types on the Mechanical Properties of Polymer-Modified Cement Mortars." Applied Sciences 10, no. 3 (2020): 1061. http://dx.doi.org/10.3390/app10031061.

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This is an experimental study showing the effect of four types of polymers (acrylate polymer (AC), polyvinyl alcohol (PVA), styrene–butadiene rubber (SBR), and ethylene-vinyl acetate (EVA)) on the mechanical properties of polymer-modified cement mortars (PCMs). One polymer dosage was used in this study (3%), and the effect of this dosage on PCMs was compared with a control mortar mix with 0% polymer. The compressive, flexural, and pull-off bond strengths were measured and compared with previous results in works of literature. The effect of polymer addition on improving the mechanical propertie
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Huang, Jingting, Tao Li, Dayong Zhu, Peng Gao, and An Zhou. "Compressive behavior of circular and square concrete column externally confined by different types of basalt fiber–reinforced polymer." Advances in Structural Engineering 23, no. 8 (2020): 1534–47. http://dx.doi.org/10.1177/1369433219898086.

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This article studies the compressive behavior of concrete columns confined by different basalt fiber–reinforced polymers. A total of 30 columns were divided into 10 groups according to section shapes (circular and square), basalt fiber–reinforced polymer types (unidirectional basalt fiber–reinforced polymer, bidirectional basalt fiber–reinforced polymer, and hybrid basalt fiber–reinforced polymer/carbon fiber–reinforced polymers), and number of layers (0, 1, and 2). The test results showed that the compressive strengths of confined specimens increased by 20%–71% for circular columns and by 23%
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Kühn, Susanne, Albert van Oyen, Elisa L. Bravo Rebolledo, Amalie V. Ask, and Jan Andries van Franeker. "Polymer types ingested by northern fulmars (Fulmarus glacialis) and southern hemisphere relatives." Environmental Science and Pollution Research 28, no. 2 (2020): 1643–55. http://dx.doi.org/10.1007/s11356-020-10540-6.

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AbstractAlthough ingestion of plastic by tubenosed seabirds has been documented regularly, identification of the polymer composition of these plastics has rarely been described. Polymer assessment may assist in identifying sources and may indicate risks from additives occurring in specific types of polymers. Using known test materials, two identification methods Fourier transform infrared spectroscopy and near infrared spectroscopy (FTIR and NIR) were compared. Although both methods were found to be similarly suitable for identification of plastic polymers, a significant difference was observe
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Han, Jingwei. "Analysis of Preparation and Application of Conductive Polymer Materials." MATEC Web of Conferences 410 (2025): 03008. https://doi.org/10.1051/matecconf/202541003008.

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Conductive polymer materials have evolved into a revolutionary class of functional materials since their discovery, bridging the performance gap between traditional conductive metals and insulating polymers. Their unique combination of tunable electrical conductivity, lightweight nature, flexibility, and processability has driven extensive interdisciplinary research. These materials demonstrate tremendous potential in applications such as flexible electronics, electromagnetic shielding, biomedical applications, among others. Based on the introduction of the conductive mechanisms of conductive
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Orihara, H., M. Doi, and Y. Ishibashi. "Two Types of Mechanism of Electrorheological Effect in Polymer Blends." International Journal of Modern Physics B 13, no. 14n16 (1999): 1949–55. http://dx.doi.org/10.1142/s0217979299002009.

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We have found two different types of mechanism of electrorheological (ER) effect observed in polymer blends of side-chain type liquid crystalline polymers and a dimethylsiloxane, and clarified the relationship between the ER effect and the structure. On the basis of their mechanisms we discuss the electrorheological properties of these two blends.
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Pashchenko, O. A., N. A. Borodina, O. O. Yavorska, V. V. Ishkov, and O. V. Cherniaiev. "Application of polymer flooding to increase oil recovery." IOP Conference Series: Earth and Environmental Science 1415, no. 1 (2024): 012054. https://doi.org/10.1088/1755-1315/1415/1/012054.

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Abstract This article examines the problem of non-uniform oil displacement during the development of multi-layer fields and proposes a promising approach to solve it – polymer flooding. The article outlines the basic principles of polymer flooding, including dissolving polymers in water to increase viscosity and reduce water mobility. Various types of polymers used in this technology and their unique characteristics are considered. The advantages of polymer flooding are highlighted, such as increasing reservoir coverage and increasing oil production efficiency. The illustrations presented in t
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Nikonov, Mykola, and Sergii Shevchenko. "Polymer insulation breakdown types analysis." Bulletin of the National Technical University "KhPI". Series: Energy: Reliability and Energy Efficiency, no. 2 (9) (December 29, 2024): 31–35. https://doi.org/10.20998/eree.2024.2(9).307823.

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The paper investigates the theory of electrical breakdown channel formation in polymeric dielectrics. The process of operating electrical networks is quite complex, since dielectric materials lose their insulating properties under the influence of electric field intensity, which causes the destruction of molecular bonds. This phenomenon is called dielectric breakdown, or a violation of its electrical strength and loss of dielectric properties, followed by the formation of a breakdown channel with high electrical conductivity. Additional factors, such as insulation cooling conditions, external
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Teses / dissertações sobre o assunto "Polymer types"

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Chernykh, Andrey. "Main Chain Type Benzoxazine Polymers for High Performance Applications." Cleveland, Ohio : Case Western Reserve University, 2009. http://rave.ohiolink.edu/etdc/view?acc_num=case1232733414.

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He, Yinghui. "Novel N-type Π-conjugated Polymers for all-polymer solar cells". Thesis, Bordeaux, 2017. http://www.theses.fr/2017BORD0651/document.

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Les cellules solaires organiques (OSC) apparaissent comme une technologie prometteuse pour les énergies renouvelables en raison de leur poids léger, leur grande flexibilité et leur processus de fabrication peu coûteux. Jusqu'à présent, la plupart des OPV ont utilisé des dérivés de Fullerene, tels que PCBM ou PC71BM, en tant qu'accepteur d'électrons dans la couche active, qui s'est avéré être un goulet d'étranglement pour cette technologie. Par conséquent, le développement d'accepteurs non-fullerene est devenu la nouvelle force motrice de ce domaine. Les cellules solaires tout-polymères (tous-P
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Dolgov, Alex V. "EXPLORATION OF GRADIENT-TYPE POLY(ARYLENE ETHER)S VIA AN ABB' MONOMER SYSTEM." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1222006664.

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Lewis, Sandralee Patricia. "Polymerizable and polymeric Type I and Type II photoinitiators." Thesis, City University London, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.316103.

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Mansour, Agapy. "Étude des propriétés chimique et morphologique de composites hybrides de type (co)polymère plasma / métal." Thesis, Le Mans, 2019. http://www.theses.fr/2019LEMA1002.

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Les nanocomposites constitués de nanoparticules métalliques finement dispersées dans une matrice isolante suscitent un grand intérêt en raison de leurs propriétés optiques, électriques ou antibactériennes permettant une variété d'applications technologiques. Dans ce travail, nous nous intéressons aux composites hybrides à base d’ une matrice polymère élaborée par polymérisation par plasma froid (PECVD), imprégnée par la suite avec une solution de sel métallique qui est finalement réduit. Ces nanocomposites sont essentiellement étudiés pour leurs applications et peu d’ études portent sur leur s
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Benaboura, Ahmed. "Etude de la copolymerisation du styrene et de l'hexene-1 et du mode d'insertion du styrene en presence de catalyseurs de type "ziegler"." Paris 6, 1988. http://www.theses.fr/1988PA066059.

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Polymerisation du styrene et de l'hexene-1 en presence de catalyseurs a base de titane, sans organoaluminique, contenant ou non du chlorure d'aluminium et par du chlorure de magnesium. Influence d'addition de benzoate d'ethyle
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Vidal, Pierre-Louis. "Synthèse et caractérisation de ligands polymères conjugués alternant oligothiophènes et complexes de métaux de transition de type bis(1,10-phénanthroline)." Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10142.

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Ce travail a consiste a elaborer differents ligands polymeres conjugues alternant oligothiophenes et complexes cuivre-bis(1,10-phenanthroline). La demarche utilisee a ete la suivante : la synthese de ligands precurseurs conjugues constitues d'une 1,10-phenanthroline disubstituee en positions 2,9 ou 3,8 par des troncons polymerisables bi- ou ter-thiophenes (ligands t2, t3, f2me) a ete realisee. Le pouvoir assembleur de cu(i) a ete utilise pour encastrer deux de ces ligands identiques autour de lui. L'electropolymerisation des complexes ainsi formes a conduit a un premier type d'architectures, c
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Hot, Julie. "Influence des polymères de type superplastifiants et agents entraineurs d'air sur la viscosité macroscopique des matériaux cimentaires." Thesis, Paris Est, 2013. http://www.theses.fr/2013PEST1114/document.

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Depuis quelques années, le béton connait une période de mutation. Les tendances actuelles concernant la formulation des bétons à hautes performances et à faibles impacts environnementaux montrent que la fraction volumique solide est de plus en plus élevée. Cette augmentation de la fraction volumique solide est cependant difficilement compatible avec une fluidité importante. La thèse présentée ici a donc pour but de proposer des solutions permettant de contourner le problème de viscosité des ces nouveaux bétons. Nous nous attachons ainsi à identifier les mécanismes d'action de certains polymère
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Lang, Kening. "Topological Effect on Self-assembly Behavior of Precisely Synthesized AmBn type Giant Molecules." University of Akron / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=akron1490651233006441.

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Suhard, Samuel. "Towards polymer-supported Schrock-type initiators for olefin metathesis." Thesis, University of Leicester, 2004. http://hdl.handle.net/2381/30092.

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This thesis describes the synthesis of supported Schrock-type initiators immobilised via polymer-bound alcohol and their activity in olefin metathesis, together with a parallel study of the synthesis and reactivity of their model homogeneous counterparts.;Chapter 1 presents an overview of the inorganic and organic supports used in order to achieve the heterogeneisation of a range of different homogenous catalysts. A review of the nature of various organic supports and examples of supported metalligand complexes are given. The terms olefin metathesis, and their corresponding metathesis reaction
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Livros sobre o assunto "Polymer types"

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Ray, Suprakas Sinha. Environmentally friendly polymer nanocomposites: Types, processing and properties. Woodhead Publishing, 2013.

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2

Harold, Berlinger, ed. Types we can make in hot metal & polymer plates. Harold Berliner's Typefoundry, 1993.

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Typefoundry, Harold Berliner's. Types we can make: In hot metal and polymer plates. Harold Berliner's Typefoundry, 1992.

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4

Blackley, D. C. Polymer Latices: Science and technology Volume 2: Types of latices. Springer Netherlands, 1997.

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5

Hammond, Andrew. Synthesis and characterisation of two different types of novel polymer colloids. University of Manchester, 1994.

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6

Sirotkin, Rostislav. Fundamentals of modern materials science. INFRA-M Academic Publishing LLC., 2025. https://doi.org/10.12737/2111845.

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The textbook provides data on current trends in the expansion and change of the range of materials used in practice and the problems of the fundamental formation of materials science in the 21st century. The modern conceptual and theoretical fundamental principles of materials science as a unified scientific and educational discipline based on four basic scientific innovations are outlined. It is shown that the unity of the nature of metallic and non-metallic organic (carbon) and inorganic (carbon-free) polymer materials and the specifics of their differences in structure and properties are re
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Ortiz, Oscar L. Coordination polymers and metal organic frameworks: Properties, types, and applications. Nova Science Publishers, 2011.

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8

Keller, Thomas. Use of fibre reinforced polymers in bridge construction. International Association for Bridge and Structural Engineering (IABSE), 2003. http://dx.doi.org/10.2749/sed007.

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<p>The aim of the present Structural Engineering Document, a state-of-the-art report, is to review the progress made worldwide in the use of fibre rein­forced polymers as structural components in bridges until the end of the year 2000.<p> Due to their advantageous material properties such as high specific strength, a large tolerance for frost and de-icing salts and, furthermore, short installation times with minimum traffic interference, fibre reinforced polymers have matured to become valuable alternative building materials for bridge structures. Today, fibre reinforced polymers a
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Chrétien, Gilbert. Matériaux composites à matrice organique: Polymères et renforts type, caractéristiques, technologies de mise en forme, applications. Lavoisier, 1986.

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10

Center, Lewis Research, ed. Effect of counterface material type and its topography on the tribological properties of polyimide composites. National Aeronautics and Space Administration, Lewis Research Center, 1985.

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Capítulos de livros sobre o assunto "Polymer types"

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Saldívar-Guerra, Enrique, and Eduardo Vivaldo-Lima. "Introduction to Polymers and Polymer Types." In Handbook of Polymer Synthesis, Characterization, and Processing. John Wiley & Sons, Inc., 2013. http://dx.doi.org/10.1002/9781118480793.ch1.

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Robeson, Lloyd M. "Types of Polymer Blends." In Polymer Blends. Carl Hanser Verlag GmbH & Co. KG, 2007. http://dx.doi.org/10.3139/9783446436503.004.

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Rauwendaal, Chris. "Different Types of Extruders." In Polymer Extrusion. Carl Hanser Verlag GmbH & Co. KG, 2014. http://dx.doi.org/10.1007/978-1-56990-539-5_2.

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Rauwendaal, Chris. "Different Types of Extruders." In Polymer Extrusion. Carl Hanser Verlag GmbH & Co. KG, 2014. http://dx.doi.org/10.3139/9781569905395.002.

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Blackley, D. C. "Synthetic latices: individual types." In Polymer Latices. Springer Netherlands, 1997. http://dx.doi.org/10.1007/978-94-011-5866-4_3.

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Crompton, T. R. "Types of Polymers and Their Uses." In Practical Polymer Analysis. Springer US, 1993. http://dx.doi.org/10.1007/978-1-4615-2874-6_1.

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Shutov, Fjodor A., G. Henrici-Olivé, and S. Olivé. "Other Types of Integral Foams." In Integral/Structural Polymer Foams. Springer Berlin Heidelberg, 1986. http://dx.doi.org/10.1007/978-3-662-02486-7_20.

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Liu, N. C., and H. Huang. "Types of Reactive Polymers Used in Blending." In Reactive Polymer Blending. Carl Hanser Verlag GmbH & Co. KG, 2001. http://dx.doi.org/10.1007/978-3-446-40174-7_2.

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Liu, N. C., and H. Huang. "Types of Reactive Polymers Used in Blending." In Reactive Polymer Blending. Carl Hanser Verlag GmbH & Co. KG, 2001. http://dx.doi.org/10.3139/9783446401747.002.

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Silva, Marco, Pedro Martins, and Senentxu Lanceros-Mendez. "Types of Polymer-Based Magnetoelectric Materials." In Magnetoelectric Polymer-Based Composites. Wiley-VCH Verlag GmbH & Co. KGaA, 2017. http://dx.doi.org/10.1002/9783527801336.ch3a.

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Trabalhos de conferências sobre o assunto "Polymer types"

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Yahagh, Majid, and Farhad A. Boroumand. "Fabrication, Simulation and Comparison of Three Types of Polymer-based, Perovskite and Dyesensitized Solar Cells." In 2024 International Conference on Electrical, Computer and Energy Technologies (ICECET). IEEE, 2024. http://dx.doi.org/10.1109/icecet61485.2024.10698651.

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Makeev, Andrew, Dean Nguyen, Peter Mathews, Guillame Seon, Yuri Nikishkov, and Mark Robeson. "Analysis Methods Improving Confidence in Material Qualification for Laminated Composites." In Vertical Flight Society 72nd Annual Forum & Technology Display. The Vertical Flight Society, 2016. http://dx.doi.org/10.4050/f-0072-2016-11598.

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Fiber-reinforced composite materials are increasingly used in rotorcraft structures to reduce weight and improve efficiency. A major challenge, delaying the implementation of recently developed higher-performance materials that offer improved mechanical strength and stiffness at a lower weight, is the lack of efficient common material qualification. The current standard practices are too costly and time-consuming. Due to low confidence in material allowables, the entire material qualification process, including numerous test methods and large test matrices, must be repeated for every seemingly
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Martin, R. L., and T. G. Braga. "Corrosion Control in Enhanced Oil Recovery Wells." In CORROSION 1986. NACE International, 1986. https://doi.org/10.5006/c1986-86332.

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Abstract Results of laboratory and field investigations are presented which illustrate corrosion identification and control in several types of EOR projects. Primary emphasis is given to producing wells in CO2 floods, in polymer or micell-polymer floods, and insitu combustion wells. Injection wells in these projects are considered briefly. Based on corrosion measurements and measurements of sulfide, bicarbonate, and dissolved CO2 in produced fluids, effective corrosion inhibitors can be selected for corrosion control in all of the above conditions.
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Li, Zhong, Colin Dooley, and Y. Frank Cheng. "Environmental Stress Cracking of High Density Polyethylene Pipes in Alkali Surfactant Polymer Enhanced Oil Recovery Floods." In CORROSION 2013. NACE International, 2013. https://doi.org/10.5006/c2013-02292.

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Abstract With the increasing use of high density polyethylene (HDPE) pipes in enhanced oil recovery process, environmental stress cracking (ESC) poses a threat to the integrity of pipes in alkali surfactant polymer (ASP) flooding. In this work, the ESC susceptibility of three types of HDPE material was investigated by ASP soaking, tensile testing, pre-notched specimen stressing tests and surface characterization. The results demonstrate that the susceptibility of HDPE to ESC depends on the ASP concentration, stress and the type of materials. The ASP solution soaking decreases the elongation of
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Munzert, P., C. Praefke, U. Schulz, and N. Kaiser. "Formation of plasma-generated nanostructures on polymer surfaces for various polymer types." In 13th International Conference on Plasma Surface Engineering September 10 - 14, 2012, in Garmisch-Partenkirchen, Germany. Linköping University Electronic Press, 2013. http://dx.doi.org/10.3384/wcc2.258-261.

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To produce functional elements for optical applications, the components often have to be coated or joined together. Low adhesion is usually caused by different polarity or surface chemistry of the individual components. Therefore, measures have to be taken to modify the respective interfaces to improve the adhesion. In the case of highly transparent polymers (e.g. PC, PMMA, COC, PA) this turns out to be problematic due to the demands on the optical properties. Many methods for adhesion promotion, as etching with chemicals or mechanical roughening, lead to a significant deterioration in the tra
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Zhang, Yadong, Liming Wang, Tatsuo Wada, and Hiroyuki Sasabe. "Carbazole Main-Chain Polymers with Di-Acceptor-Substituents for Nonlinear Optics." In Organic Thin Films for Photonic Applications. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/otfa.1993.wd.8.

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Polymeric second-order nonlinear optical (NLO) materials have been studied extensively in recent years for applications in electrooptic devices [1,2]. There are three types of polymer materials developed for this purpose: guest-host systems [3], side-chain polymers [4-6], and main-chain polymers [7-9]. The second-order NLO effects of these materials were demonstrated after electric poling above the polymer glass transition temperature (Tg). While many guest-host and side-chain NLO polymers have been developed, relatively few main-chain polymers have been prepared. Most of the main-chain polyme
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Böse, Holger, Maximilian Thuy, and Simon Stier. "Wearable operation device with different types of dielectric elastomer sensors." In Electroactive Polymer Actuators and Devices (EAPAD) XX, edited by Yoseph Bar-Cohen. SPIE, 2018. http://dx.doi.org/10.1117/12.2297212.

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Ulu, Furkan Ismail, Ram Mohan, and Ravi Pratap Singh Tomar. "Development of Thermally Conductive Polymer/CNF Nanocomposite Materials via PolyJet Additive Manufacturing by Improvement of Digital Material Design." In ASME 2019 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2019. http://dx.doi.org/10.1115/imece2019-11556.

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Abstract PolyJet printing technology allows building polymeric materials with complex multi-material structures in the resolution of tens of microns layer thickness providing high control over the entire 3-D part. On the other hand, thermally conductive polymer/CNF nanocomposite materials offer new opportunities for replacing metals in industry and applications that require heat dissipation to avoid degradation of materials prematurely. CNFs are one of the best promising filler types to enhance thermal conductance of polymers. However, experimental thermal conductivities of polymer/CNF nanocom
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Maciel, Joice Pinho, Andriele Brizolla Bueno, and Carlos Alberto Moraes. "Non-recyclable polymeric materials in Waste Sorting Units in Porto Alegre/RS and metropolitan region." In ENSUS2023 - XI Encontro de Sustentabilidade em Projeto. Grupo de Pesquisa Virtuhab/UFSC, 2023. http://dx.doi.org/10.29183/2596-237x.ensus2023.v11.n4.p465-477.

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According to the World Economic Forum (2020), around 32% of plastics (polymers) are inappropriately disposed in the environment, 40% in landfills, 14% are incinerated, 14% are sent for recycling, and only 2% of this fraction sent for recycling is recovered in durable products. These data demonstrate that even if potentially recyclable waste is sent to the Selective Collection, many are not recyclable due to the use of different types of polymeric materials with no market for recycling. This study aims to analyze which types of polymer packaging are currently sent via Selective Collection to So
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Sharma, Satish, Nassif E. Rayess, and Nihad Dukhan. "Preliminary NVH Characterization of Metal Foam-Polymer Interpenetrating Phase Composites." In ASME 2009 International Mechanical Engineering Congress and Exposition. ASMEDC, 2009. http://dx.doi.org/10.1115/imece2009-12672.

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The damping and basic dynamic properties of a novel type of multifunctional hybrid material known as Metal Foam-Polymer Composite are investigated. This material is obtained by injection molding a thermoplastic polymer through an open cell Aluminum Foam, in essence creating two contiguous morphologies; an Aluminum Foam interconnected “skeleton” with the open pores filled with a similarly interconnected polymer substructure. This coexistence of both materials allows each to contribute its salient properties (e.g. the plastics contributing surface toughness and the metal foams contributing therm
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Relatórios de organizações sobre o assunto "Polymer types"

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Wilkins, Justin, Andrew McQueen, Joshua LeMonte, and Burton Suedel. Initial survey of microplastics in bottom sediments from United States waterways. Engineer Research and Development Center (U.S.), 2021. http://dx.doi.org/10.21079/11681/42021.

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Given the reported extent of microplastics in the aquatic environment, environmentally relevant exposure information for sediments dredged by the US Army Corps of Engineers will lend context to the risks posed by this contaminant during dredging. We measured the occurrence, abundance, and polymer composition of microplastics in sediments collected from nine dredged waterways and two non-dredged reference areas. The number of particles in sediment samples ranged from 162 to 6110 particles/kg dry wt., with a mean of 1636 particles/kg dry wt. Fragments were the most prevalent shape observed among
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Bell, Matthew, Rob Ament, Damon Fick, and Marcel Huijser. Improving Connectivity: Innovative Fiber-Reinforced Polymer Structures for Wildlife, Bicyclists, and/or Pedestrians. Nevada Department of Transportation, 2022. http://dx.doi.org/10.15788/ndot2022.09.

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Engineers and ecologists continue to explore new methods and adapt existing techniques to improve highway mitigation measures that increase motorist safety and conserve wildlife species. Crossing structures, overpasses and underpasses, combined with fences, are some of the most highly effective mitigation measures employed around the world to reduce wildlife-vehicle collisions (WVCs) with large animals, increase motorist safety, and maintain habitat connectivity across transportation networks for many other types and sizes of wildlife. Published research on structural designs and materials for
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Perez-Rivera, Anthony, Jonathan Trovillion, Peter Stynoski, and Jeffrey Ryan. Simulated barge impacts on fiber-reinforced polymers (FRP) composite sandwich panels : dynamic finite element analysis (FEA) to develop force time histories to be used on experimental testing. Engineer Research and Development Center (U.S.), 2024. http://dx.doi.org/10.21079/11681/48080.

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The purpose of this study is to evaluate the dynamic response of fiber-reinforced polymer (FRP) composite sandwich panels subjected to typical barge impact masses and velocities to develop force time histories that can be used in controlled experimental testing. Dynamic analyses were performed on FRP composite sandwich panels using the finite element method software Abaqus/Explicit. The “traction-separation” law in the Abaqus software is used to define the cohesive surface interaction properties to evaluate the damage between FRP composite laminate layers as well as the core separation within
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Lenz, Mark. RV POSEIDON Fahrtbericht / Cruise Report POS536/Leg 1. GEOMAR, 2020. http://dx.doi.org/10.3289/geomar_rep_ns_56_2020.

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DIPLANOAGAP: Distribution of Plastics in the North Atlantic Garbage Patch Ponta Delgada (Portugal) – Malaga (Spain) 17.08. – 12.09.2019 The expedition POS 536 is part of a multi-disciplinary research initiative of GEOMAR investigating the origin, transport and fate of plastic debris from estuaries to the oceanic garbage patches. The main focus will be on the vertical transfer of plastic debris from the surface and near-surface waters to the deep sea and on the processes that mediate this transport. The obtained data will help to develop quantitative models that provide information about the le
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Yu, Luping. Development of N- and P- Types of Semiconducting Polymers. Defense Technical Information Center, 2015. http://dx.doi.org/10.21236/ada615267.

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Rujiravanit, Ratana. Preparation and characterization of hydrogel from chitin derivative and silk fibroin. Thailand Research Fund, 2003. https://doi.org/10.58837/chula.res.2003.80.

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Natural polymer blend films composed of chitosan and silk fibroin were prepared by solution casting technique with various ratios of chitosan to silk fibroin, using glutaraldehyde as crosslinking agent. The effects of the ratio of chitosan to silk fibroin and crosslinking agent on mechanical properties, swelling behavior and drug releasing property of the blend films were studied. For the swelling behavior, the blend films exhibited a dramatic change in the degree of swelling when immersed in acidic solutions. The blend film with 80% chitosan content had the maximum degree of swelling. It appe
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Speceal, Aviva, Gary Anguiano, and Robert Sandoval. User Data Package for Polymer and Lignosulfonate Type Dust Suppressants. Defense Technical Information Center, 1999. http://dx.doi.org/10.21236/ada371562.

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Beck, Aaron. RiverOceanPlastic: Land-ocean transfer of plastic debris in the North Atlantic, Cruise No. AL534/2, 05 March – 26 March 2020, Malaga (Spain) – Kiel (Germany). GEOMAR Helmholtz Centre for Ocean Research Kiel, 2020. http://dx.doi.org/10.3289/cr_al534-2.

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Cruise AL534/2 is part of a multi-disciplinary research initiative as part of the JPI Oceans project HOTMIC and sought to investigate the origin, transport and fate of plastic debris from estuaries to the oceanic garbage patches. The main focus of the cruise was on the horizontal transfer of plastic debris from major European rivers into shelf regions and on the processes that mediate this transport. Stations were originally chosen to target the outflows of major European rivers along the western Europe coast between Malaga (Spain) and Kiel (Germany), although some modifications were made in r
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Tengamnuay, Parkpoom. Efficacy and mechanistic studies of chitosan as nasal absorption enhancer of peptide drugs : research report. Chulalongkorn University, 1999. https://doi.org/10.58837/chula.res.1999.27.

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Objective. To evaluation the in vivo efficacy of chitosan as nasal absorption enhancers of peptides in rats and compare the results with that of hydroxypropyl- and dimethyl-Beta-cyclodextrins (HPBetaCD and DMBetaCD). Methods. Two types of chitosan. i.e., the free base (CSJ) and the glutamate salt form (CSG) were evaluated for their nasal absorption enhancing effect on salmon calcitonin (sCT) using an in vibo rat absorption technique. Solutions containing sCT and chitosan (0 to 1.25 % w/v) in isotonic phosphate buffers (pH 3.0 to 6.0) were nasally administered at the dose of 10 IU/kg. The plasm
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ตัณฑะพานิชกุล, วิวัฒน์. การศึกษาผลกระทบของปริมาณน้ำในเซลลูโลสไนเตรตต่อคุณสมบัติของน้ำยาทาเล็บ ที่มีดินเหนียวเป็นสารปรับสภาพการไหล : รายงานวิจัยแบบสมบูรณ์. จุฬาลงกรณ์มหาวิทยาลัย, 2004. https://doi.org/10.58837/chula.res.2004.55.

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Cellulose nitrate (CN) is a semi-synthetic polymer rendering outstanding film properties such as good transparency, and water resistance, thus finds its major utilization in coating industry. Raw CN has water and isopropyl alcohol by-product at maximum content of approximately 3 and 30 wt%, respectively. The tolerance water level in the CN powder for a potential application as nail polish is investigated in order to produce good film-forming properties. The effect of adding layered silicate clay particles as thixotropic agent in the nail enamel is also examined. The water content was varied at
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