Academic literature on the topic 'Copolycondensation'

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Journal articles on the topic "Copolycondensation"

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Beev, Aues A., Azamat A. Khashirov, Dzhul’etta A. Beeva, M. U. Shokumova, and V. V. Khasanov. "Influence of Copolycondensation Conditions on the Synthesis and Properties of Aromatic Copolyesulphonketones." Key Engineering Materials 899 (September 8, 2021): 532–39. http://dx.doi.org/10.4028/www.scientific.net/kem.899.532.

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The paper investigates the dependence of the reduced viscosity and some properties of aromatic copolyethersulfone ketones on the chemical structure of diphenols and activated dihaloid compounds on the conditions of copolycondensation processes. It is shown that the course of copolycondensation processes and important performance characteristics of products are significantly influenced by the chemical structures of the starting monomers and the order of their introduction into the reaction.
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Beev, Aues A., Svetlana Yu Khashirova, Dzhul’etta A. Beeva, and Milana U. Shokumova. "On the Synthesis of Copolyarylene Ether Ketones by Nucleophilic Substitution Reaction." Key Engineering Materials 869 (October 2020): 532–37. http://dx.doi.org/10.4028/www.scientific.net/kem.869.532.

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The dependence of the reduced viscosity of copolyarylene ether ketones on the chemical structure of diols and the conditions for copolycondensation is studied. It was shown that the structure of diols and the order of their introduction into the polycondensation reaction affect the reduced viscosity, impact strength, and temperature characteristics of copolyarylene ether ketones.
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AOKI, Akihiro. "Sequence Distribution in Copolymers Obtained by Nonequilibrium Copolycondensation." KOBUNSHI RONBUNSHU 51, no. 6 (1994): 420–27. http://dx.doi.org/10.1295/koron.51.420.

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Triki, Rania, Majdi Abid, Martine Tessier, Souhir Abid, Rachid El Gharbi, and Alain Fradet. "Furan-based poly(esteramide)s by bulk copolycondensation." European Polymer Journal 49, no. 7 (2013): 1852–60. http://dx.doi.org/10.1016/j.eurpolymj.2013.04.014.

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Sviridova, Tatyana V. "Fine control over the structure and morphology of metal-matrix composites employing submicron oxide particles with the adjustable redox-activity." Journal of the Belarusian State University. Chemistry, no. 2 (August 27, 2020): 82–88. http://dx.doi.org/10.33581/2520-257x-2020-2-82-88.

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It is shown that copolycondensation of mixed vanadic and molybdic acids under the solvothermal conditions yields substitutional solid solution V2O5 : MoO3 (isostructural to V2O5 xerogel) the redox activity of which exhibits increase with the MoO3 content. Thus obtained mixed oxide 0.5V2O5 : 0.5MoO3 with high redox activity, being codeposited with the galvanic nickel, ensure multicenter nucleation of metal phase, yields compact composite with the enhanced corrosion stability.
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Racles, Carmen, Vasile Cozan, and Maria Cazacu. "New Arylidene—Siloxane Polyesters." High Performance Polymers 15, no. 3 (2003): 231–42. http://dx.doi.org/10.1177/0954008303015003001.

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New siloxane-containing polyesters with arylidene mesogenic moieties were prepared by copolycondensation reactions between bis(hydroxybuthyl)siloxanes, 2,6-bis(4-hydroxybenzylidene)cyclohexanone, and diacid chlorides such as sebacoyl and terephthaloyl. The polymer structure was confirmed by IR and 1H-NMR spectroscopy. They were characterized by gel permeation chromatography and ultraviolet analyses. The thermotropic liquid crystalline behavior was investigated by differential scanning calorimetry and polarized optical microscopy.
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Beev, A. A., S. Yu Khashirova, D. A. Beeva, and M. U. Shokumova. "To the question of the synthesis of aromatic copolyether sulfone ketones." Plasticheskie massy, no. 11-12 (January 11, 2024): 10–13. http://dx.doi.org/10.35164/0554-2901-2023-11-12-10-13.

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Synthesis reactions and physico-mechanical, thermal properties of new aromatic copolyethersulfone ketones were studied in relation to the chemical structure of activated dihaloarenes and diols in a simpler, more economical way. It is shown that by controlling the ratio of monomers and the order of their introduction into the copolycondensation reaction, it is possible to obtain aromatic copolyethersulfone ketones with increased temperature and physicomechanical characteristics.
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Brahmbhatt, D. I., and B. R. Hirani. "Synthesis and Characterization of Coumarin–Trioxane–Urea Copolymers." High Performance Polymers 8, no. 2 (1996): 295–300. http://dx.doi.org/10.1088/0954-0083/8/2/010.

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4-methyl-7-hydroxycoumarin trioxane urea (MHCTU) copolymers were prepared by copolycondensation of 4-methyl-7 hydroxycoumarin (MHC), trioxane (T) and urea (U) in the presence of 2 M HCl/H2SO4 as a catalyst with different molar ratios of reacting monomers. The copolymers were characterized by elemental analysis, IR spectral and TGA studies. The number average molecular weight ( Mn) of all the produced copolymers was determined by non-aqueous titrimetry.
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Ogata, Naoya, Kohei Sanui, Anchi Zao, Masayoshi Watanabe, and Tomoaki Hanaoka. "Direct Copolycondensation for the Synthesis of Copolyamides or Copolyesters." Polymer Journal 20, no. 7 (1988): 529–37. http://dx.doi.org/10.1295/polymj.20.529.

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Mo, Guang Zhen, Jin Feng Xiong, Pai Peng, and Zhao Yang Wang. "Structural Characterization of Serial Novel Star-Shaped Biodegradable Material Poly(lactic acid-co-melamine)." Advanced Materials Research 781-784 (September 2013): 491–94. http://dx.doi.org/10.4028/www.scientific.net/amr.781-784.491.

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Using flame retardant melamine (MA) as a new aromatic core, biodegradable material poly (lactic acid-co-melamine) [P(LA-co-MA)] with different molar feed ratios are synthesized via direct melt copolycondensation. The structures of P(LA-co-MA) s are characterized by FT-IR,1H-NMR,13C-NMR and GPC. The results indicate that MA moiety as the core is incorporated into the PLA backbone as expected, and the obtained products are copolymers indeed.
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Dissertations / Theses on the topic "Copolycondensation"

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Sung, I.-Ching, and 宋憶青. "The reactivity of urea-phenol-formaldehyde copolycondensation resin and the application on wood adhesives." Thesis, 1999. http://ndltd.ncl.edu.tw/handle/61489954712180752663.

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碩士<br>國立中興大學<br>森林學系<br>87<br>SUMMARY The core of this investigation was trying to apply the variables in the synthesis of the urea-phenol formaldehyde copolycondensation resins (UPF), for future use of bark extractives as a substitute for phenol. In this study, three types of UPF copolycondensation resins were synthesized : UPF-A , a mixture of methylolurea and phenol; UPF-B, a mixture of methylolphenol and urea, and UPF-C, a mixture of methylolurea and methylolphenol. The results from the properties and DSC analysis are summarized as follows: For UPF-A co
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Book chapters on the topic "Copolycondensation"

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Gooch, Jan W. "Copolycondensation." In Encyclopedic Dictionary of Polymers. Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2913.

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Longuet, Claire, and François Ganachaud. "Copolycondensation of Functional Silanes and Siloxanes in Solution Using tris(pentafluorophenyl)borane as a Catalyst in a View to Generate Hybrid Silicones." In Silicon Based Polymers. Springer Netherlands, 2008. http://dx.doi.org/10.1007/978-1-4020-8528-4_9.

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"Copolycondensation." In Encyclopedic Dictionary of Polymers. Springer New York, 2007. http://dx.doi.org/10.1007/978-0-387-30160-0_2863.

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