Littérature scientifique sur le sujet « Semi-Crystalline structure »
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Articles de revues sur le sujet "Semi-Crystalline structure"
Hajová, Hana, Richard Pokorný et Juraj Kosek. « Diffusion Transport in Reconstructed Semi-Crystalline Structure of Polyolefins ». Macromolecular Symposia 302, no 1 (31 mars 2011) : 121–28. http://dx.doi.org/10.1002/masy.201000073.
Texte intégralMoskalewicz, Tomasz, Sławomir Zimowski, Aleksandra Fiołek, Alicja Łukaszczyk, Beata Dubiel et Łukasz Cieniek. « The Effect of the Polymer Structure in Composite Alumina/Polyetheretherketone Coatings on Corrosion Resistance, Micro-mechanical and Tribological Properties of the Ti-6Al-4V Alloy ». Journal of Materials Engineering and Performance 29, no 3 (26 septembre 2019) : 1426–38. http://dx.doi.org/10.1007/s11665-019-04354-y.
Texte intégralKalwik, Aleksandra, Przemyslaw Postawa et Marcin Nabialek. « Analysis of Ageing Processes of Semi-Crystalline Materials ». Materiale Plastice 57, no 3 (30 septembre 2020) : 41–51. http://dx.doi.org/10.37358/mp.20.3.5378.
Texte intégralSimões, Ricardo, Júlio C. Viana, Gustavo R. Dias et António M. Cunha. « Mechanical Behavior of the Lamellar Structure in Semi-Crystalline Polymers ». Materials Science Forum 730-732 (novembre 2012) : 1006–11. http://dx.doi.org/10.4028/www.scientific.net/msf.730-732.1006.
Texte intégralKim, Man-Ho, Jeong-Mann Doh, Seong Chul Han, Keun Hwa Chae, Byung-Yong Yu, Kyung Tae Hong, Andrew Jackson et Lawrence M. Anovitz. « The pore wall structure of porous semi-crystalline anatase TiO2 ». Journal of Applied Crystallography 44, no 6 (4 octobre 2011) : 1238–45. http://dx.doi.org/10.1107/s0021889811037447.
Texte intégralPrevorsek, D. C. « Structure of semi crystalline fibers from interpretation of anelastic effects ». Journal of Polymer Science Part C : Polymer Symposia 32, no 1 (8 mars 2007) : 343–75. http://dx.doi.org/10.1002/polc.5070320119.
Texte intégralFilsinger, D. H., et L. K. Frevel. « Computer Automation of Structure-Sensitive Search-Match Algorithm for Powder Diffraction Analysis ». Powder Diffraction 1, no 1 (mars 1986) : 22–25. http://dx.doi.org/10.1017/s0885715600011246.
Texte intégralLovelace, J. J., K. Narayan, J. K. Chik, H. D. Bellamy, E. H. Snell, U. Lindberg, C. E. Schutt et G. E. O. Borgstahl. « Imaging modulated reflections from a semi-crystalline state of profilin:actin crystals ». Journal of Applied Crystallography 37, no 2 (17 mars 2004) : 327–30. http://dx.doi.org/10.1107/s0021889804001773.
Texte intégralAvramova, Nadka. « Amorphous and Semi-Crystalline Nylon-6 : Processing and Properties ». Engineering Plastics 1, no 4 (janvier 1993) : 147823919300100. http://dx.doi.org/10.1177/147823919300100403.
Texte intégralAvramova, Nadka. « Amorphous and Semi-Crystalline Nylon-6 : Processing and Properties ». Polymers and Polymer Composites 1, no 4 (janvier 1993) : 261–74. http://dx.doi.org/10.1177/096739119300100403.
Texte intégralThèses sur le sujet "Semi-Crystalline structure"
Huang, Tao 1962. « Nucleation and growth of spherulitic domain structure in semi-crystalline polymer thin films ». Thesis, McGill University, 1997. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=34737.
Texte intégralIn this work, systematic experiments have been carried out to elucidate the polymer spherulite growth mechanism, the spatio-temporal evolution of nucleation-growth and grain formation. We take spatial correlation into account and describe both geometrical and topological characteristics of the structural evolution in nucleation and growth. Physical models, computational and direct imaging methods have been developed and integrated for prediction and characterization of the microstructure formation in the semi-crystalline polymer thin films. Novel domain-spatial correlation functions and structure functions are proposed and evaluated with experimental data. Scaling relationships for nucleation-growth are explored with experimental data from both FFT imaging and the domain-spatial correlation function. Advanced grain structure analysis are proposed and evaluated in terms of the topological correlation and the grouping analysis of all the pertinent structural parameters taken together. Computational modeling based on the proposed envelop evolution equation associated with the light intensity equation and free energy equation predicts the nucleation-growth processes and grain patterns of polymer spherulitic structures. These results do not only enhance the understanding of dynamic mechanisms, but also provide reliable predictive techniques to optimize material functionality and process control.
Hussein, Naji. « Enhancement of the mechanical performance of semi-crystalline polyamides by tailoring the intermolecular interaction in the amorphous phase ». Thesis, Lyon, INSA, 2013. http://www.theses.fr/2013ISAL0140/document.
Texte intégralThe use of polyamides in the automotive industry has grown significantly over the last years with the demand to reduce vehicle weight and also to increase fuel efficiency. Polyamide 66 having excellent chemical resistance, mechanical strength and toughness becomes the largest engineering thermoplastic used in automotive components. These latter are often submitted to repeated stress during service and their mechanical properties decline progressively until the failure. E. Mourglia-Seignobos (thesis 2009), pointed out that damage of polyamide 66 involves voids nucleation and growth in the amorphous phase. In order to improve the durability of this material, we tailored the cohesive energy of its amorphous phase by introducing phenolic moieties offering strong intermolecular H-bonds interactions. We proposed a preparation method of block copolyamides containing aliphatic polyamide 66 and phenolic groups (PA6HIA) by reactive extrusion. Microstructural characterizations pointed out that crystalline properties of resulting copolymers are not significantly altered at low PA6HIA content and that reactive extrusion is more appropriate than the in-situ copolymerization for the preparation of these materials. We showed that PA66/6HIA copolyamides having undisturbed crystalline features exhibit superior mechanical performance than the standard PA66, particularly longer lifetime under cyclic loading. The results of this work put in evidence the impact of the amorphous phase on the ultimate properties of semi-crystalline polymers in one hand, and open the way to a better increase of the durability of these materials by improving their crystalline features in another hand
Simmons, Stephanie. « Influence of processing on the structure and properties of semi-crystalline polymer systems : 1) biodegradable starch/poly(ethylene-vinyl alcohol) blends and 2) polyolefinic thermoplastics ». Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/11379.
Texte intégralHousseini, Joulia. « Corrélation entre la dynamique moléculaire, le polymorphisme cristallin et les propriétés électroactives des polymères à base de poly(fluorure de vinylidène) pour des applications pyroélectriques et de récupération d'énergie ». Electronic Thesis or Diss., Bordeaux, 2024. http://www.theses.fr/2024BORD0170.
Texte intégralVinylidene Fluoride (VDF)-based polymers are well-known electroactive materials with their high output functional performance leveraged by the piezoelectric, pyroelectric, and electrocaloric effects. Besides, their outstanding electroactive properties, their ability to be incorporated into flexible devices allow them to be integrated into a broad range of applications such as sensors, energy storage, printed memories, electro caloric refrigeration, artificial muscles devices. The dielectric properties of VDF-based polymers are strongly influenced by their macromolecular architecture and semi-crystalline structure. Consequently, understanding the relationship between chemical sequence, crystallinity and electroactive properties is essential to optimize their performance and stability in targeted applications. Modulation of their electroactivity is directly associated with the development of crystalline polymorphism, which can be refined by variations in processing conditions. The central objective of this Ph.D. thesis is to further decipher the multiple semi-crystalline structures of VDF-based polymers and correlate crystalline polymorphism with electroactive behavior. In this work, we particularly delved into the integration of P(VDF-co-TrFE) copolymer into pyroelectric devices, by highlighting the impact of the casting and annealing processes on the semi-crystalline structure and the final pyroelectric properties. A combination of X-ray scattering, differential scanning calorimetry, dielectric spectroscopy and polarization cycles measurements were used to probe the structural characteristics of P(VDF-co-TrFE) layers as function of the film processing methods, leading to the optimization of the final pyroelectric response. Next, we sought at the optimization of P(VDF-ter-TrFE-ter-CTFE) systems used for energy-harvesting or cooling applications by rationalizing the impact of processing conditions – with a focus on the role of the casting solvents – on the relaxor ferroelectric properties. Finally, we have explored the use of solid state nuclear magnetic resonance spectroscopy to unravel the relationship between macromolecular structure, crystalline polymorphism and electroactive properties, which allows us to provide a clearer picture of these complex systems by differentiating three different states of ordering in these materials: an amorphous, rigid-amorphous and crystalline phases. In summary, this study aims to establish connections between the macromolecular architecture of electroactive polymers and their thin film crystalline structure to enhance their dielectric functionalities for specific applications
Bargain, François. « Structure semi-cristalline et propriétés d'usage de films de copolymères fluorés électro-actifs : influence de la composition et de la mise en forme ». Thesis, Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLET007.
Texte intégralThe relationship between semi-crystalline structure and properties of use (mechanical, dielectric and electroactive) of fluorinated copolymer films was studied for applications in organic electronics. Investigated materials are poly(VDF-co-TrFE) copolymers and poly(VDF-ter-TrFE-ter-CTFE) terpolymers based on vinylidene fluoride (TrFE), trifluoroethylene (TrFE) and chlorotrifluoroethylene (CTFE). Polymer films, obtained after solvent evaporation, are studied by X-ray diffraction (SAXS-WAXS), DSC, FTIR, DMA, dielectric spectroscopy and polarization cycles in order to highlight the impact of composition and processing (annealing, poling) on structure and final properties of material. We showed that the ferroelectric (FE) phase coexists with the defective ferroelectric (DFE) phase in copolymer films. The increasing fraction of DFE phase with TrFE content allows explaining the evolution of thermal properties. A continuous structural transition, from DFE phase to paraelectric (PE) phase was highlighted. The CTFE termonomer content highly influences the crystalline structure and the electro-actives properties of terpolymer films (loss of ferroelectric behavior in favor of relaxor ferroelectric (RFE) behavior).We proved for the first time the existence of a continuous structural transition between RFE phase and PE phase around room temperature. This transition allows explaining exacerbated properties of these materials (dielectric constant and deformation under electric field).Finally, analogies of behavior between copolymers and terpolymers are discussed, especially the evolution of crystalline phases under electric field, in order to better understand how these electro-active materials work for their future development at industrial level
Bargain, François. « Structure semi-cristalline et propriétés d'usage de films de copolymères fluorés électro-actifs : influence de la composition et de la mise en forme ». Electronic Thesis or Diss., Paris Sciences et Lettres (ComUE), 2017. http://www.theses.fr/2017PSLET007.
Texte intégralThe relationship between semi-crystalline structure and properties of use (mechanical, dielectric and electroactive) of fluorinated copolymer films was studied for applications in organic electronics. Investigated materials are poly(VDF-co-TrFE) copolymers and poly(VDF-ter-TrFE-ter-CTFE) terpolymers based on vinylidene fluoride (TrFE), trifluoroethylene (TrFE) and chlorotrifluoroethylene (CTFE). Polymer films, obtained after solvent evaporation, are studied by X-ray diffraction (SAXS-WAXS), DSC, FTIR, DMA, dielectric spectroscopy and polarization cycles in order to highlight the impact of composition and processing (annealing, poling) on structure and final properties of material. We showed that the ferroelectric (FE) phase coexists with the defective ferroelectric (DFE) phase in copolymer films. The increasing fraction of DFE phase with TrFE content allows explaining the evolution of thermal properties. A continuous structural transition, from DFE phase to paraelectric (PE) phase was highlighted. The CTFE termonomer content highly influences the crystalline structure and the electro-actives properties of terpolymer films (loss of ferroelectric behavior in favor of relaxor ferroelectric (RFE) behavior).We proved for the first time the existence of a continuous structural transition between RFE phase and PE phase around room temperature. This transition allows explaining exacerbated properties of these materials (dielectric constant and deformation under electric field).Finally, analogies of behavior between copolymers and terpolymers are discussed, especially the evolution of crystalline phases under electric field, in order to better understand how these electro-active materials work for their future development at industrial level
Zhou, Hongxia. « Effects of Microcrystallinity on Physical Aging and Environmental Stress Cracking of Poly (ethylene terephthalate) (PET) ». See Full Text at OhioLINK ETD Center (Requires Adobe Acrobat Reader for viewing), 2005. http://www.ohiolink.edu/etd/view.cgi?toledo1122315621.
Texte intégralTypescript. "A dissertation [submitted] as partial fulfillment of the requirements of the Doctor of Philosophy degree in Engineering." Bibliography: leaves 231-241.
Odarchenko, Yaroslav. « Tailoring the mesoscopic structure and orientation of semicrystalline and liquid-crystalline polymers : from 1D- to 2D-confinement ». Phd thesis, Université de Haute Alsace - Mulhouse, 2012. http://tel.archives-ouvertes.fr/tel-01062091.
Texte intégralGref, Ruxandra. « Fractionnement par pervaporation de mélanges liquides hydro-organiques partiellement miscibles : mise en évidence du rôle de la structure cristalline des membranes denses sur leurs propriétés de transport ». Vandoeuvre-les-Nancy, INPL, 1991. http://docnum.univ-lorraine.fr/public/INPL_T_1991_GREF_R.pdf.
Texte intégralWe have studied the pervaporation properties of different liquid mixtures presenting a miscibility gap. Depending on inner polymer interactions, we defined an “ideal” and a particular bahaviour, and we chose to focus on one membrane of each category : Cellulose Acetate (AC) and Poly(vinyl Alcohol) (PVA), among those widely used in industry. We show that AC swells the same way in both phases in thermodynamic equilibrium, whereas PVA does not. Concentration polarization is the only mean to specifically modify one of the partial fluxes. PVA is a typical semicrystalline polymer, whose structure governs the proportions of the three possible states of soaked water. After a review of the properties ruled by the amount of crystallites in the polymer, we have build a qualitative model devoted to the permeation and swelling properties in two phases in a steady thermodynamic state. We then came to a quantitative model of the pervaporation process using PVA membranes. The result of this study is the fact that soacked water of an absorbent polymer defines its behavior when used as a membrane to pervaporate a hydro-organic mixture
Kumar, Avinesh Avi. « Charge transport in semi-crystalline poly(3-hexylthiophene) (P3HT) structures ». Thesis, Queen Mary, University of London, 2011. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.538659.
Texte intégralLivres sur le sujet "Semi-Crystalline structure"
Brunson, Kevin Michael. Characterization of semi-insulating polycrystalline silicon : The influence of the structural properties of SIPOS films on the electrical properties of their interfaces with crystalline silicon. Bradford, 1987.
Trouver le texte intégralChapitres de livres sur le sujet "Semi-Crystalline structure"
Michler, G. H., et I. Naumann. « INFLUENCE OP MOLECULAR STRUCTURE ON THE MORPHOLOGY OF SEMI-CRYSTALLINE POLYMERS ». Dans Morphology of Polymers, sous la direction de Blahoslav Sedláček, 329–36. Berlin, Boston : De Gruyter, 1986. http://dx.doi.org/10.1515/9783110858150-026.
Texte intégralTrotignon, J. P., J. Verdu et R. Roques. « THE ROLE OF THE SKIN-CORE STRUCTURE IN THE AGEING OF SEMI-CRYSTALLINE POLYMERS ». Dans Morphology of Polymers, sous la direction de Blahoslav Sedláček, 297–302. Berlin, Boston : De Gruyter, 1986. http://dx.doi.org/10.1515/9783110858150-022.
Texte intégralZhang, Le, Bo Yin, Robert Fleischhauer et Michael Kaliske. « A Temperature-Dependent Viscoelastic Approach to the Constitutive Behavior of Semi-Crystalline Thermoplastics at Finite Deformations ». Dans Creep in Structures VI, 321–34. Cham : Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-39070-8_19.
Texte intégralTonelli, A. E., M. A. Gomez, Hajime Tanaka et M. H. Cozine. « Solid State 13C NMR Studies of the Structures, Conformations, and Dynamics of Semi-Crystalline Polymers ». Dans Solid State NMR of Polymers, 81–105. Boston, MA : Springer US, 1991. http://dx.doi.org/10.1007/978-1-4899-2474-2_4.
Texte intégralMarius, Arghirescu. « A Preonic Model of Quarks and Particles, Based on a Cold Genesis Theory ». Dans Redefining Standard Model Particle Physics [Working Title]. IntechOpen, 2023. http://dx.doi.org/10.5772/intechopen.109123.
Texte intégralSomashekar, R. « Crystal size and distortion parameters in fibres using Wide-Angle X-ray Scattering (WAXS) ». Dans Defect and Microstructure Analysis by Diffraction, 728–54. Oxford University PressOxford, 2000. http://dx.doi.org/10.1093/oso/9780198501893.003.0030.
Texte intégralActes de conférences sur le sujet "Semi-Crystalline structure"
Zhao, Y. « The structure of electrical trees in semi-crystalline polymers ». Dans Eighth International Conference on Dielectric Materials, Measurements and Applications. IEE, 2000. http://dx.doi.org/10.1049/cp:20000525.
Texte intégralZhang, G., H. Liao, C. Coddet, H. Yu, S. G. Mhaisalkar, V. Ji et W. Huang. « Influence of Annealing Condition on Crystallization Behavior and Mechanical Properties of Thermal Sprayed PEEK Coating ». Dans ITSC2005, sous la direction de E. Lugscheider. Verlag für Schweißen und verwandte Verfahren DVS-Verlag GmbH, 2005. http://dx.doi.org/10.31399/asm.cp.itsc2005p0732.
Texte intégralLi, Shuangshan, Mathew Wynn et Navid Zobeiry. « A Machine Learning Framework for In-Situ Microstructural and Kinetics Analysis of Thermoplastic Composites While Processing Under a Polarized Microscope ». Dans ASME 2023 Aerospace Structures, Structural Dynamics, and Materials Conference. American Society of Mechanical Engineers, 2023. http://dx.doi.org/10.1115/ssdm2023-105758.
Texte intégralZhang, G., H. Liao, M. Cherigui et C. Coddet. « Effect of Substrate Surface Topography and Temperature on Millimeter and Micrometer Sized Splat Formation and on Thermal Contact Resistance ». Dans ITSC2006, sous la direction de B. R. Marple, M. M. Hyland, Y. C. Lau, R. S. Lima et J. Voyer. ASM International, 2006. http://dx.doi.org/10.31399/asm.cp.itsc2006p0923.
Texte intégralÖzten, Almila, Fatih Sargın, Kürşat Kanbur, Alperen Kızılöz et Ahmet Türk. « Investigation of Triton X-100 Use in PVA Nanofiber Production ». Dans 6th International Students Science Congress. Izmir International Guest Student Association, 2022. http://dx.doi.org/10.52460/issc.2022.044.
Texte intégralLi, Chang-Jiu, Guan-Jun Yang et Cheng-Xin Li. « Development of the Particle Interface Bonding in Thermal Spray Coatings for Expanding High Performance Applications ». Dans ITSC 2012, sous la direction de R. S. Lima, A. Agarwal, M. M. Hyland, Y. C. Lau, C. J. Li, A. McDonald et F. L. Toma. ASM International, 2012. http://dx.doi.org/10.31399/asm.cp.itsc2012p0047.
Texte intégralKalia, Karun, et Amir Ameli. « Interfacial Bond Strength of Various Rigid/Soft Multi-Materials Printed via Fused Filament Fabrication Process ». Dans ASME 2020 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2020. http://dx.doi.org/10.1115/smasis2020-2298.
Texte intégralWYNN, MATHEW, KUAN-TING CHEN et NAVID ZOBEIRY. « CHARACTERIZING THERMAL DEGRADATION IN SEMI-CRYSTALLINE THERMOPLASTIC COMPOSITES ». Dans Proceedings for the American Society for Composites-Thirty Eighth Technical Conference. Destech Publications, Inc., 2023. http://dx.doi.org/10.12783/asc38/36599.
Texte intégralFayyad, Eman, Aboubakr Abdullah, Mohamed Hassan, Abdul Rasheed Pathath, Khaled Mahmoud, George Jarjoura et Zoheir Farhat. « Novel Electroless Deposited Corrosion – Resistant and Anti-Bacterial NiP–TiNi Nanocomposite Coatings ». Dans Qatar University Annual Research Forum & Exhibition. Qatar University Press, 2020. http://dx.doi.org/10.29117/quarfe.2020.0009.
Texte intégralPramod, K., et Ramesh Babu Gangineni. « Structural phase study in un-patterned & ; patterned PVDF semi-crystalline films ». Dans SOLID STATE PHYSICS : Proceedings of the 58th DAE Solid State Physics Symposium 2013. AIP Publishing LLC, 2014. http://dx.doi.org/10.1063/1.4872845.
Texte intégralRapports d'organisations sur le sujet "Semi-Crystalline structure"
Pisani, William, Dane Wedgeworth, Michael Roth, John Newman et Manoj Shukla. Exploration of two polymer nanocomposite structure-property relationships facilitated by molecular dynamics simulation and multiscale modeling. Engineer Research and Development Center (U.S.), mars 2023. http://dx.doi.org/10.21079/11681/46713.
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