Relevant bibliographies by topics / Liquid Crystalline Behavior

Contents

  1. Journal articles
  2. Dissertations / Theses
  3. Books
  4. Book chapters
  5. Conference papers
  6. Reports

Academic literature on the topic 'Liquid Crystalline Behavior'

Author: Grafiati
Published: 6 September 2023

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Journal articles on the topic "Liquid Crystalline Behavior"

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Hu, Tianhui, Helou Xie, Li Chen, Sheng Chen, and Hailiang Zhang. "Intriguing liquid crystalline behavior of liquid crystalline polyrotaxane containing azobenzene mesogens." Polymer Bulletin 67, no. 6 (December 31, 2010): 937–50. http://dx.doi.org/10.1007/s00289-010-0426-3.

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Yamada, Takashi, Reiko Azumi, Hiroaki Tachibana, Hideki Sakai, Masahiko Abe, Peter Bäuerle, and Mutsuyoshi Matsumoto. "Liquid Crystalline Behavior ofα-Substituted Oligothiophenes." Chemistry Letters 30, no. 10 (October 2001): 1022–23. http://dx.doi.org/10.1246/cl.2001.1022.

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Yatabe, Tetsuo, Akira Kaito, and Yoshikazu Tanabe. "Liquid Crystalline Behavior of Linear Permethyloligosilanes." Chemistry Letters 26, no. 8 (August 1997): 799–800. http://dx.doi.org/10.1246/cl.1997.799.

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Honerkamp, J., and R. Seitz. "Transient behavior of liquid crystalline polymers." Journal of Chemical Physics 87, no. 5 (September 1987): 3120–26. http://dx.doi.org/10.1063/1.453049.

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Metselaar, Gerald A., Sander J. Wezenberg, Jeroen J. L. M. Cornelissen, Roeland J. M. Nolte, and Alan E. Rowan. "Lyotropic liquid-crystalline behavior of polyisocyanodipeptides." Journal of Polymer Science Part A: Polymer Chemistry 45, no. 6 (2007): 981–88. http://dx.doi.org/10.1002/pola.21891.

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Shoji, Yu, Ryohei Ishige, Tomoya Higashihara, Junji Watanabe, and Mitsuru Ueda. "Thermotropic Liquid Crystalline Polyimides with Siloxane Linkages: Synthesis, Characterization, and Liquid Crystalline Behavior." Macromolecules 43, no. 6 (March 23, 2010): 3123. http://dx.doi.org/10.1021/ma100132y.

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Shoji, Yu, Ryohei Ishige, Tomoya Higashihara, Junji Watanabe, and Mitsuru Ueda. "Thermotropic Liquid Crystalline Polyimides with Siloxane Linkages: Synthesis, Characterization, and Liquid Crystalline Behavior." Macromolecules 43, no. 2 (January 26, 2010): 805–10. http://dx.doi.org/10.1021/ma9021828.

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Kihara, H., R. Kishi, T. Miura, T. Kato, and H. Ichijo. "Phase behavior of liquid-crystalline copolymer/liquid crystal blends." Polymer 42, no. 3 (February 2001): 1177–82. http://dx.doi.org/10.1016/s0032-3861(00)00428-6.

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Ogiri, Sayuri, Hiroyuki Nakamura, Akihiko Kanazawa, Takeshi Shiono, and Tomiki Ikeda. "Photopolymerization Behavior of Ferroelectric Liquid-Crystalline Monomers." Journal of Photopolymer Science and Technology 11, no. 2 (1998): 193–98. http://dx.doi.org/10.2494/photopolymer.11.193.

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Jin, Jung-Il. "Liquid Crystalline Behavior of Novel Dimesogenic Compounds." Molecular Crystals and Liquid Crystals Science and Technology. Section A. Molecular Crystals and Liquid Crystals 267, no. 1 (October 1995): 249–65. http://dx.doi.org/10.1080/10587259508034002.

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Dissertations / Theses on the topic "Liquid Crystalline Behavior"

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Tenneti, Kishore Kumar Li Christopher Yuren. "Nanoscale hierarchical phase behavior of liquid crystalline block copolymers /." Philadelphia, Pa. : Drexel University, 2008. http://hdl.handle.net/1860/2764.

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Moilanen, A. (Anu). "Self-association, compatibility, and strengthening behavior of liquid crystalline oligomers." Doctoral thesis, University of Oulu, 1998. http://urn.fi/urn:isbn:9514250915.

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Abstract Synthetic routes were developed for the preparation of 2-alkoxy-4-hydroxybenzoic acids and 2-alkoxyhydroquinones, and a large-scale synthesis was developed for the preparation of 2-thioalkoxyhydroquinones. The 2-alkoxy-4-hydroxybenzoic acids, which contained alkyl side chains of different length, were used in the synthesis of new main chain liquid crystalline (LC) homo-, random, and block co-oligomers. In addition, oligomers of terephthaloyl chloride and 2-thioalkoxyhydroquinones and oligomers of terephthaloyl chloride and 2-alkoxyhydroquinones were produced. All the oligomers were blended with aliphatic polyamide 11 (PA 11). The effect of alkyl side chain length on the compatibility behavior of the LC oligomers towards the aliphatic polymer was characterized by DSC and FTIR, and the effect of side chain length on the flexural properties of the blends was investigated with a three-point bending test. The miscibility studies showed variable interfacial adhesion between the blended compounds. The strongest adhesion was achieved between PA 11 and the homo-oligomers of 2-alkoxy-4-hydroxybenzoic acids with short or medium long substituents (C4-C10), but the interactions between PA 11 and the oligomer with long aliphatic side chain (C18) were poor, as were those between PA 11 and the wholly aromatic oligomer of 4-hydroxybenzoic acid. The compatibility between PA 11 and the co-oligomers of 2-alkoxy-4-hydroxybenzoic acids was slightly lower than the compatibility of the corresponding homo-oligomers. DSC and FTIR analyses of the blends of oligomers of terephthaloyl chloride and 2-thioalkoxyhydroquinones and oligomers of terephthaloyl chloride and 2-alkoxyhydroquinones with PA 11 implied that the interactions between the blended compounds were poor. FTIR spectra and viscosity measurements confirmed that all the oligomeric structures could self-associate, with effect on the final mechanical properties of the polyamide. The strength of PA 11 in a three-point bending test was increased by the addition of only 1% of LC oligomers to the matrix. The results also showed that the strengthening ability of the oligomers is directly proportional to the total amount of aliphatic carbons. The best strengthening results were obtained with unsubstituted oligomers, random co-oligomers of 2-alkoxy-4-hydroxybenzoic acids, and homo-oligomer of 2-butoxy-4-hydroxybenzoic acid. DSC investigations of a ternary blend of the oligomer of 2-decanyloxy-4-hydroxybenzoic acid, PA 11, and wholly aromatic commercial LC polymer showed the promising compatibilizing effect of the oligomer.
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JEONG, SEUNG YEON. "Liquid crystalline behavior of mesogens formed by anomalous hydrogen bonding." Kent State University / OhioLINK, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=kent1304649634.

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Thorson, Todd James. "Phase behavior and stimuli response in lyotropic liquid crystalline templated photopolymers." Thesis, University of Iowa, 2013. https://ir.uiowa.edu/etd/2646.

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Simoes, Ricardo J. F. "Mechanical behavior and performance of injection molded semi-crystalline polymers." Thesis, University of North Texas, 2003. https://digital.library.unt.edu/ark:/67531/metadc5528/.

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I have used computer simulations to investigate the behavior of polymeric materials at the molecular level. The simulations were performed using the molecular dynamics method with Lennard-Jones potentials defining the interactions between particles in the system. Significant effort was put into the creation of realistic materials on the computer. For this purpose, an algorithm was developed based on the step-wise polymerization process. The resulting computer-generated materials (CGMs) exhibit several features of real materials, such as molecular weight distribution and presence of chain entanglements. The effect of the addition of a liquid crystalline (LC) phase to the flexible matrix was also studied. The concentration and distribution of the second phase (2P) were found to influence the mechanical and tribological properties of the CGMs. The size of the 2P agglomerates was found to have negligible influence on the properties within the studied range. Moreover, although the 2P reinforcement increases the modulus, it favors crack formation and propagation. Regions of high LC concentration exhibit high probability of becoming part of the crack propagation path. Simulations of the tensile deformation under a uniaxial force have shown that the molecular deformation mechanisms developing in the material depend on several variables, such as the magnitude of the force, the force increase rate, and the level of orientation of the chains. Three-dimensional (3D) graphical visualization tools were developed for representation and analysis of the simulation results. These also present interesting educational possibilities. Computer simulations provide us information which is inaccessible experimentally. From the concomitant use of simulations and experiments, a better understanding of the molecular phenomena that take place during deformation of polymers has been established.
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Verploegen, Eric Anton. "Morphology and self-assembly behavior of side chain liquid crystalline block copolymers." Thesis, Massachusetts Institute of Technology, 2008. http://hdl.handle.net/1721.1/44386.

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Thesis (Ph. D.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2008.
Includes bibliographical references.
There is significant interest from both the academic and industrial communities for understanding and controlling the self-assembly behavior of complex macromolecular systems and has been an active area of research in recent years. Such systems can be designed to result in a wide range of nanoscale morphologies and greater functionality can be introduced with increasing complexity.This thesis focuses on the synthesis and characterization of a class of side chain liquid crystalline block copolymers (SCLCBCPs) that are based on a low glass transition temperature (Tg) siloxane backbone. Moieties that self-assemble into smectic liquid crystalline (LC) phases are covalently attached to the polystyrene-polyvinylmethylsiloxane (PS-PVMS) block copolymer backbone. Precise control over the functionalization of the LCs onto the functional siloxane backbone allows for unique control over the self-assembly and the resulting properties of the system. The LC content significantly affects the stability of the smectic mesophase and subsequently the interactions with the inter-material dividing surface (IMDS) with the PS domains. A strong preference for homogenous anchoring of the LC moieties relative to the IMDS is observed, and increasing the LC content intensifies the preference for this arrangement. Utilizing the effects of LC anchoring to alter the self-assembly behavior is a reoccurring theme throughout this work. Additionally, the mechanical properties of these materials can be precisely manipulated over several orders of magnitude through variations in LC content and the block copolymer backbone architecture.Several methods can be used to manipulate the morphologies of these materials once synthesized including, thermal annealing and mechanical deformation.
(cont.) Thermal annealing provides additional mobility for self-assembly often resulting in morphological rearrangements. Mechanical deformation can be used to orient the self-assembled structures relative to an applied shear flow. Additionally, the self-assembled morphologies of spin cast into thin films were investigated. The presence of the substrate has significant effects upon the orientation of the morphologies; thermal annealing and variations liquid crystal content are shown to be useful tools for achieving a wide range of thin film morphologies.
by Eric Anton Verploegen.
Ph.D.
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Zhou, Weijun Kornfield Julia A. Kornfield Julia A. "Dynamics and shear alignment behavior of a model thermotropic liquid crystalline polymer /." Diss., Pasadena, Calif. : California Institute of Technology, 2001. http://resolver.caltech.edu/CaltechETD:etd-08292008-110129.

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Khennache, Omar. "Factors influencing product microstructure and the injection molding behavior of liquid crystalline polymers." Thesis, McGill University, 1990. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=74663.

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Liquid Crystal Polymers (LCP) are a new class of polymeric materials with special molecular and solid state structures, flow characteristics and mechanical properties. Injection molded articles of rigid chain liquid crystal copolymers (LCP's) are gaining increasing commercial importance because their dimensional stability, high stiffness and strength per unit weight, make them highly attractive for aerospace structures and automotive parts, where the anisotropic nature of the materials can be exploited to achieve novel design strategies. Considerable technological importance is given to thermotropic LCP's because of their melt phase behavior and ease of processing. Because of their comparatively low viscosity, they can be injection molded with short cycle times into thin and complex shapes.
In the present work, broad range of material properties, including specific heat, thermal conductivity, thermal diffusivity, and shear viscosity of a commercial LCP injection molding resin have been determined experimentally. In addition, a detailed experimental study has been made of the crystallization kinetics of this LCP resin. The study showed that the resin undergoes two crystallization mechanisms, a fast and a slow mechanism, depending on the temperature and the cooling rates.
Various experimental techniques, to characterize the microstructure of the molded parts, including morphology, orientation, crystallinity and mechanical properties, have been developed and used. An effort is made to explain the results. Furthermore, composite theory is employed to explain the mechanical properties in light of microstructural observations. Overall, the present work represents the most comprehensive effort to date to study and explain the processing-microstructure-property relationships for injection molded LCP's.
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Ren, Wanting. "Structure-property Relations of Siloxane-based Main Chain Liquid Crystalline Elastomers and Related Linear Polymers." Diss., Georgia Institute of Technology, 2007. http://hdl.handle.net/1853/16248.

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Soft materials have attracted much scientific and technical interest in recent years. In this thesis, attention has been placed on the underpinning relations between molecular structure and properties of one type of soft matter - main chain liquid crystalline elastomers (MCLCEs), which may have application as shape memory or as auxetic materials. In this work, a number of siloxane-based MCLCEs and their linear polymer analogues (MCLCPs) with chemical variations were synthesized and examined. Among these chemical variations, rigid p-phenylene transverse rod and flat-shaped anthraquinone (AQ) mesogenic monomers were specifically incorporated. Thermal and X-ray analysis found a smectic C phase in most of our MCLCEs, which was induced by the strong self-segregation of siloxane spacers, hydrocarbon spacers and mesogenic rods. The smectic C mesophase of the parent LCE was not grossly affected by terphenyl transverse rods. Mechanical studies of MCLCEs indicated the typical three-region stress-strain curve and a polydomain-to-monodomain transition. Strain recovery experiments of MCLCEs showed a significant dependence of strain retentions on the initial strains but not on the chemical variations, such as the crosslinker content and the lateral substituents on mesogenic rods. The MCLCE with p-phenylene transverse rod showed a highly ordered smectic A mesophase at room temperature with high stiffness. Mechanical properties of MCLCEs with AQ monomers exhibit a strong dependence on the specific combination of hydrocarbon spacer and siloxane spacer, which also strongly affect the formation of ð-ð stacking between AQ units. Poisson s ratio measurement over a wide strain range found distinct trends of Poisson s ratio as a function of the crosslinker content as well as terphenyl transverse rod loadings in its parent MCLCEs.
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Koch, Karin [Verfasser]. "Ferronematic phases with strong coupling behavior based on liquid crystalline polymer decorated nanoparticles / Karin Koch." München : Verlag Dr. Hut, 2021. http://d-nb.info/1240540086/34.

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Books on the topic "Liquid Crystalline Behavior"

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Han, Chang Dae. Rheology and Processing of Polymeric Materials: Volume 1: Polymer Rheology. Oxford University Press, 2007. http://dx.doi.org/10.1093/oso/9780195187823.001.0001.

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Volume 1 presents first fundamental principles of the rheology of polymeric fluid including kinematics and stresses of a deformable body, the continuum theory for the viscoelasticity of flexible homogeneous polymeric liquids, the molecular theory for the viscoelasticity of flexible homogeneous polymeric liquids, and the experimental methods for the measurement of the rheological properties of poylmeric liquids. The materials presented are intended to set a stage for the subsequent chapters by introducing the basic concepts and principles of rheology, from both phenomenological and molecular perspectives, ofstructurally simple flexible and homogeneous polymeric liquids. Next, this volume presents the rheological behavior of structurally complex polymeric materials including miscible polymer blends, block copolymers, liquid-crystalline polymers, thermoplastic polyurethanes, immiscible polymer blends, perticulare-filled polymers, organoclay nanocomposites, molten polymers with dissolved gas, and thermosts.
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Aveyard, Bob. Surfactants. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198828600.001.0001.

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Characteristically, surfactants in aqueous solution adsorb at interfaces and form aggregates (micelles of various shapes and sizes, microemulsion droplets, and lyotropic liquid crystalline phases). This book is about the behaviour of surfactants in solution, at interfaces, and in colloidal dispersions. Adsorption at liquid/fluid and solid/liquid interfaces, and ways of characterizing the adsorbed surfactant films, are explained. Surfactant aggregation in systems containing only an aqueous phase and in systems with comparable volumes of water and nonpolar oil are each considered. In the latter case, the surfactant distribution between oil and water and the behaviour of the resulting Winsor systems are central to surfactant science and to an understanding of the formation of emulsions and microemulsions. Surfactant layers on particle or droplet surfaces can confer stability on dispersions including emulsions, foams, and particulate dispersions. The stability is dependent on the surface forces between droplet or particle surfaces and the way in which they change with particle separation. Surface forces are also implicated in wetting processes and thin liquid film formation and stability. The rheology of adsorbed films on liquids and of bulk colloidal dispersions is covered in two chapters. Like surfactant molecules, small solid particles can adsorb at liquid/fluid interfaces and the final two chapters focus on particle adsorption, the behaviour of adsorbed particle films and the stabilization of Pickering emulsions.
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Book chapters on the topic "Liquid Crystalline Behavior"

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Kock, H. J., H. Finkelmann, W. Gleim, and G. Rehage. "Photoelastic Behavior of Liquid Crystalline Polymer Networks." In Polymeric Liquid Crystals, 275–93. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4899-2299-1_16.

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Marrucci, Giuseppe, and Francesco Greco. "Flow Behavior of Liquid Crystalline Polymers." In Advances in Chemical Physics, 331–404. Hoboken, NJ, USA: John Wiley & Sons, Inc., 2007. http://dx.doi.org/10.1002/9780470141458.ch3.

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Baird, D. G., A. Gotsis, and G. Viola. "Transient Shear Flow Behavior of Thermotropic Liquid Crystalline Copolyesters." In Polymeric Liquid Crystals, 183–95. Boston, MA: Springer US, 1985. http://dx.doi.org/10.1007/978-1-4899-2299-1_10.

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Viney, Christopher. "Liquid Crystalline Phase Behavior of Proteins and Polypeptides." In Protein-Based Materials, 281–311. Boston, MA: Birkhäuser Boston, 1997. http://dx.doi.org/10.1007/978-1-4612-4094-5_9.

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Dutta, D., and R. A. Weiss. "Rheological Behavior of Liquid-Crystalline Polymer—Polymer Blends." In ACS Symposium Series, 144–54. Washington, DC: American Chemical Society, 1991. http://dx.doi.org/10.1021/bk-1991-0462.ch008.

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Escalante, J. I., J. F. A. Soltero, F. Bautista, J. E. Puig, and O. Manero. "Time-Dependent Rheological Behavior of Liquid Crystalline Dispersions." In Materials Science Forum, 177–86. Stafa: Trans Tech Publications Ltd., 2006. http://dx.doi.org/10.4028/0-87849-993-8.177.

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Luo, Yiran. "Analysis on Liquid-Crystalline Model and Behavior of Lipid." In Lecture Notes in Mechanical Engineering, 187–93. Singapore: Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-3934-0_22.

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Belamie, E., and M. M. Giraud-Guille. "Liquid-crystalline behavior in aqueous suspensions of elongated chitin microcrystals." In Trends in Colloid and Interface Science XVII, 159–62. Berlin, Heidelberg: Springer Berlin Heidelberg, 2004. http://dx.doi.org/10.1007/b93972.

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Pugh, Coleen, and Virgil Percec. "Effect of the Polymer Backbone on the Thermotropic Behavior of Side-Chain Liquid Crystalline Polymers." In ACS Symposium Series, 97–118. Washington, DC: American Chemical Society, 1988. http://dx.doi.org/10.1021/bk-1988-0364.ch008.

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Zugenmaier, Peter, and Christina Derleth. "Phase Behavior, Structure, and Properties of Regioselectively Substituted Cellulose Derivatives in the Liquid-Crystalline State." In ACS Symposium Series, 239–52. Washington, DC: American Chemical Society, 1998. http://dx.doi.org/10.1021/bk-1998-0688.ch017.

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Conference papers on the topic "Liquid Crystalline Behavior"

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Saigal, Anil, Dan Ward, and Michael A. Zimmerman. "Impact Behavior of Liquid Crystalline Polymers." In ASME 2012 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/imece2012-89096.

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Liquid crystalline polymers have the advantage of achieving desirable mechanical properties at a competitive cost. They are composed of molecular chains that are highly oriented and tightly packed at temperatures above and below its melting point. This high degree of orientation has the following advantages: ease of processing, high mechanical strength at extreme temperatures, and resistance to mostly all chemicals, weathering, radiation, and burning. On the other hand, this high degree of orientation causes liquid crystalline polymers to have low impact strength as well as an uneven amount of shrinkage prior to molding. The objective of this study is to determine the effects of injection-molding parameters on the impact behavior of liquid crystalline polymers, in an attempt to improve and understand the processing of the material. The conditions to be tested are as follows: fill speed, initial mold temperature, and packing pressure. The impact tester used for this research was an Instron Dynatup tester. Based on the data, it is apparent that fill speed is the greatest determining factor for optimizing the impact energy of the injection-molded liquid crystalline polymers followed by high packing pressure. In addition, even though the nature of the impact energy curves for LCPs and materials such as Delrin are similar, the impact load curves as a function of time are significantly different. This can be attributed to the layered structure of LCP samples.
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Goc, F., Wojciech Kuczynski, Roman S. Dabrowski, Barbara Stryla, and H. Gierszal. "Switching behavior of antiferroelectric liquid-crystalline mixtures." In International Conference on Dielectric and Related Phenomena '98, edited by Andrzej Wlochowicz. SPIE, 1999. http://dx.doi.org/10.1117/12.373704.

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Ishiyama, Takuto, Yoshiaki Kobayashi, Hirona Nakamura, Miho Aizawa, Kyohei Hisano, Shoichi Kubo, and Atsushi Shishido. "Solubility and molecular alignment behavior of liquid-crystalline polymers by scanning wave photopolymerization." In Liquid Crystals XXVI, edited by Iam Choon Khoo. SPIE, 2022. http://dx.doi.org/10.1117/12.2635808.

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Quamara, J. K., P. Raj, S. K. Mahna, and S. Lal. "Electret behavior of NCO terminated liquid crystalline polyurethane." In 2011 IEEE 14th International Symposium on Electrets ISE 14. IEEE, 2011. http://dx.doi.org/10.1109/ise.2011.6085025.

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Sledzinska, Irma, Ewa Bialecka-Florjanczyk, and A. Orzeszko. "Influence of polar esterimide group and oxyethylene chain on liquid crystalline behavior of cholesteryl derivatives." In Liquid Crystals, edited by Marzena Tykarska, Roman S. Dabrowski, and Jerzy Zielinski. SPIE, 1998. http://dx.doi.org/10.1117/12.301272.

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Hirschmann, Harald, Wolfgang Meier, and Heino Finkelmann. "Nonlinear optical and piezoelectric behavior of liquid-crystalline elastomers." In San Diego, '91, San Diego, CA, edited by Roger A. Lessard. SPIE, 1991. http://dx.doi.org/10.1117/12.50654.

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Wojciechowski, Piotr, and Maria Mucha. "Liquid-crystalline behavior of the cellulose derivatives suspended in the photocuring polymer binder." In Liquid and Solid State Crystals: Physics, Technology, and Applications, edited by Jozef Zmija. SPIE, 1993. http://dx.doi.org/10.1117/12.156973.

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Kurihara, Seiji, Akihisa Sakamoto, Daisuke Yoneyama, and Takamasa Nonaka. "Optical switching behavior of liquid crystalline polymer networks containing azobenzene molecules." In SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, edited by Iam-Choon Khoo. SPIE, 1999. http://dx.doi.org/10.1117/12.365793.

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Narumi, Takatsune, Jun Fukada, and Tomiichi Hasegawa. "Flow Induced Unstable Structure of Liquid Crystalline Polymer Solution in L-Shaped Slit Channels." In ASME/JSME 2007 5th Joint Fluids Engineering Conference. ASMEDC, 2007. http://dx.doi.org/10.1115/fedsm2007-37169.

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An experimental study has been conducted on unstable structures induced in two dimensional slit flows of liquid crystalline polymer solution. 50wt% aqueous solution of hydroxyl-propylcellulose (HPC) was utilized as a test fluid and its flow behavior in L-shaped slit channels with cross section of 1mm height and 16mm width was measured optically. The inner corner of the L-shaped channel was rounded off in order to clarify the influence of the radius of curvature on the unstable behavior. A conversing curved channel was also tested. The flow patterns of HPC solution in the channels were visualized with two crossed polarizers and we observed that typical wavy textures generated in the upstream of the corner almost disappeared after the corner flow. However, an unstable texture was developed again only from the inner corner in downstream flow. The fluctuation of orientation angle and dichroism were also measured with a laser opto-rheometric system and it was found that the unstable behaviors of HPC solution have periodic oscillatory characteristics at a typical frequency. In the inner side flow after the corner, the periodic motion became larger toward the downstream and then higher harmonic oscillations were superimposed. Larger rounding off of the inner corner suppressed the redevelopment of unstable behavior, and it is considered that the rapid re-growth of unstable behavior was caused by rapid deceleration at the corner flow. Moreover, the unstable structure was stabilized with accelerated (elongated) region in the corner flow and the converging channel was helpful to obtain stable structure in the downstream region.
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Li, Yueting, Huiqin Lian, Wei Chang, Benzhe Wu, Yupeng Liu, Junlin Ma, Junwei Ma, and Jierui Wang. "Carbon Nanotube Network Structure Induced Shape Memory Behavior Changes of Liquid Crystalline Polyurethane." In 2015 International Symposium on Material, Energy and Environment Engineering. Paris, France: Atlantis Press, 2015. http://dx.doi.org/10.2991/ism3e-15.2015.23.

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Reports on the topic "Liquid Crystalline Behavior"

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Percec, Virgil, Myongsoo Lee, and C. Ackerman. Molecular Engineering of Liquid Crystalline Polymers by Living Polymerization. 9. Living Cationic Polymerization of 5-((4-Cyano-4'-Biphenyl) oxy)pentyl Vinyl Ethers and 7-((4-Cyano-4'-Biphenyl)oxy)heptyl Vinyl Ether, and the Mesomorphic Behavior of the Resulting Polymers. Fort Belvoir, VA: Defense Technical Information Center, October 1990. http://dx.doi.org/10.21236/ada229769.

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