Academic literature on the topic 'Condensation polymerization'
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Journal articles on the topic "Condensation polymerization"
Ramakrishnan, S. "Condensation polymerization." Resonance 22, no. 4 (April 2017): 355–68. http://dx.doi.org/10.1007/s12045-017-0475-0.
Full textKim, Soo Hyun, and Young Ha Kim. "Direct condensation polymerization of lactic acid." Macromolecular Symposia 144, no. 1 (October 1999): 277–87. http://dx.doi.org/10.1002/masy.19991440125.
Full textWiegand, Tina, and Anthony A. Hyman. "Drops and fibers — how biomolecular condensates and cytoskeletal filaments influence each other." Emerging Topics in Life Sciences 4, no. 3 (October 13, 2020): 247–61. http://dx.doi.org/10.1042/etls20190174.
Full textKROL, PIOTR, and JAN PIELICHOWSKI. "Kinetic models of the step-growth polymerization (condensation polymerization and addition polymerization) processes." Polimery 37, no. 07 (July 1992): 304–11. http://dx.doi.org/10.14314/polimery.1992.304.
Full textUeda, M. "Sequence control in one-step condensation polymerization." Progress in Polymer Science 24, no. 5 (August 1999): 699–730. http://dx.doi.org/10.1016/s0079-6700(99)00014-3.
Full textFino, Steve A., Kyle A. Benwitz, Kris M. Sullivan, Dan L. LaMar, Kristen M. Stroup, Stacy M. Giles, Gary J. Balaich, Rebecca M. Chamberlin, and Kent D. Abney. "Condensation Polymerization of Cobalt Dicarbollide Dicarboxylic Acid." Inorganic Chemistry 36, no. 20 (September 1997): 4604–6. http://dx.doi.org/10.1021/ic961182u.
Full textHashimoto, Hironobu, Yutaka Abe, Shigeomi Horito, and Juji Yoshimura. "Synthesis of Chitooligosaccharide Derivatives by Condensation Polymerization." Journal of Carbohydrate Chemistry 8, no. 2 (May 1989): 307–11. http://dx.doi.org/10.1080/07328308908048012.
Full textSon, Jhun-Mo, Kenji Ogino, Noriyuki Yonezawa, and Hisaya Sato. "Condensation polymerization of triphenylamine derivatives with paraformaldehyde." Synthetic Metals 98, no. 1 (November 1998): 71–77. http://dx.doi.org/10.1016/s0379-6779(98)00156-8.
Full textTao, Ran, and Mitchell Anthamatten. "Condensation and Polymerization of Supersaturated Monomer Vapor." Langmuir 28, no. 48 (November 20, 2012): 16580–87. http://dx.doi.org/10.1021/la303462q.
Full textSon, Jhun-Mo, Mayumi Nakao, Kenji Ogino, and Hisaya Sato. "Condensation polymerization of triphenylamine with carbonyl compounds." Macromolecular Chemistry and Physics 200, no. 1 (January 1, 1999): 65–70. http://dx.doi.org/10.1002/(sici)1521-3935(19990101)200:1<65::aid-macp65>3.0.co;2-s.
Full textDissertations / Theses on the topic "Condensation polymerization"
Tsoi, Kit-hon. "Aspects of the statistics of condensation polymer networks." Click to view the E-thesis via HKUTO, 2007. http://sunzi.lib.hku.hk/hkuto/record/B38985433.
Full textSantai, Catherine Theresa. "In vitro Condensation of Mixed-Stranded DNA." Diss., Georgia Institute of Technology, 2006. http://hdl.handle.net/1853/14043.
Full textTsoi, Kit-hon, and 徐傑漢. "Aspects of the statistics of condensation polymer networks." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2007. http://hub.hku.hk/bib/B38985433.
Full textNascimento, de Andrade Fabiana. "Effect of condensable materials during the gas phase polymerization of ethylene on supported catalysts." Thesis, Lyon, 2019. http://www.theses.fr/2019LYSE1016/document.
Full textFluidized bed reactors (FBR) are the only commercially viable technology for the production of polyethylene in the gas phase since the polymerization is highly exothermic and the FBR is the only type of gas phase reactor that offers adequate possibilities of heat transfer. The highly exothermic nature of this polymerization effectively poses many problems for gas phase operation and can limit the production of a certain process. However, in recent years the fluidized bed processes have been improved with new technologies. In particular, the addition of inert (usually liquefied) hydrocarbons allows one to increase the amount of heat removed from the reactor. These compounds increase the heat capacity of the gas phase and, if injected in liquid form, also evaporate and thus absorb even more heat from the reaction medium efficiently. This is known as a condensed mode operation. In it, one uses compounds that can be liquefied in the recycle condenser, and which are called Induced Condensing Agents (ICA). The use of ICA is extremely important from an industrial point of view. The injection of ICA can have many different physical effects at the level of the growing polymer particles. For instance, adding these compounds can cause changes in solubility and other physical properties, which can facilitate the transport of ethylene and hydrogen to the active sites of the catalysts. It is thus very important that the physical phenomena related to the sorption equilibrium of the monomer(s) and other species from the gas phase to the polymer phase, and their diffusion on the polymer matrix at the active sites should be accounted for. In addition to having an effect on the kinetics, these phenomena can also impact the structure of the polymer molecules and consequently qualify the characteristics of the polymer. Identifying the behavior of these phenomena under process conditions and control variables of the hydrogen/ethylene ratio and the comonomer/ethylene ratio with ICA are central objectives of this study. A series of ethylene homo- and co-polymerizations in the gas phase were carried out using a commercial Ziegler-Natta catalyst in the presence of ICA (propane, n-pentane, and n-hexane). We investigated the effect of temperatures, the partial pressure of ICA, hydrogen, and comonomers on the behavior of the polymerization. It was found that adding ICA significantly increased the reaction rate and average molecular weights at a given temperature. It was also unexpectedly observed that increasing the reactor temperature in the presence of an ICA actually led to a decrease in the overall reaction rate. These results were attributed to the socalled cosolubility effect. In reactions in the presence of different hydrogen concentrations, for an ICA/C2 ratio much larger than the H2/C2 ratio, the effect of ICA on ethylene solubility can counteract the decrease in average molecular weight caused by the presence of hydrogen. The impact of ICA on the rates of copolymerization reactions is more pronounced in the initial stages, losing strength due to the effect of the comonomer. Finally, an evaluation of the kinetics of crystallization under isothermal conditions for mixtures of different ICA:HDPE concentrations showed that the crystallization time is significantly higher for systems rich in ICA than for dry polymer
Erdem, Haci Bayram. "Synthesis and Characterization of Thermoplastic Polyphenoxyquinoxalines." University of Akron / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=akron1207147171.
Full textTunc, Deniz. "Synthesis of functionalized polyamide 6 by anionic ring-opening polymerization." Thesis, Bordeaux, 2014. http://www.theses.fr/2014BORD0178/document.
Full textThe studies presented in this thesis aim to copolymerize ԑ-caprolactam (CL) with different derivatives of α-amino-ԑ-caprolactam (which has a functionalizable primary amine) via anionic ring-opening polymerization. By using this strategy, we describe: (i) the synthesis of thermally more stable fluorinated polyamide 6 having a hydrophobic surface; (ii) the synthesis of polyamides 6 bearing pendant cinnamoyl groups, which are thermo-and photoresponsivechromophore groups, and demonstrating their reversible crosslinking as well as improved thermo-mechanical properties; (iii) the copolymerization ofCL with a crosslinker (N-functionalized α-amino-ԑ-caprolactambis-monomers) into crosslinked polyamides 6.As part of our continuing interest in polyamide 6 chemistry, we developed the combination of anionic ring-opening polymerization of CL and chain-growth condensation polymerization of ethyl 4-butylaminobenzoate in order to obtain aliphatic/aromatic polyamides in one-step
Erdogan, Selahattin. "Synthesis Of Liquid Crystalline Copolyesters With Low Melting Temperature For In Situ Composite Applications." Phd thesis, METU, 2011. http://etd.lib.metu.edu.tr/upload/12613306/index.pdf.
Full texts were synthesized and categorized with respect to their fiber formation capacity, melting temperature and mechanical properties. The basic chemical structure of synthesized LCP&rsquo
s were composed of p-acetoxybenzoic acid (p-ABA), m-acetoxybenzoic acid (m-ABA), hydroquinone diacetate (HQDA), terephthalic acid (TPA) and isophthalic acid (IPA) and alkyl-diacids monomers. In addition to mentioned monomers, polymers and oligomers were included in the backbone such as polyethylene terephthalate (PET) and polyethylene naphthalate (PEN) polymers, and polybutylene naphthalate (PBN), polyhexylene naphthalate (PHN) and poly butylene terephthalate (PBT) oligomers that contain different kinds of alkyl-diols. We adjusted the LCP content to have low melting point (180oC-280oC) that is processable with thermoplastics. This was achieved by balancing the amount of linear (para) and angular (meta) groups on the aromatic backbones together with the use of linear hydrocarbon linkages in the random copolymerization (esterification) reaction. LCP species were characterized by the following techniques
Polarized Light Microscopy, Nuclear Magnetic Resonance (NMR), Fourier Transform Infrared Analysis (FTIR), Differential Scanning Calorimetry (DSC), Thermogravimetric Analysis (TGA), X-ray Scattering (WAXS, Fiber diffraction), surface free energy, end group analysis (CEG), intrinsic viscosity (IV) and tensile test. According to these analysis LCPs were classified into five main categories
(I) fully aromatics, (II) aromatics+ PET/PEN, (III) aromatics + oligomers (IV) aromatics + short aliphatic diacids, (V) aromatics + long aliphatic diacids. The foremost results of the analysis can be given as below. DSC analysis shows that some LCPs are materials that have stable LC mesogens under polarized light microscopy. In TGA analysis LCPs that have film formation capacity passed the thermal stability test up to 390oC. NMR results proved that predicted structures of LCPs from feed charged to the reactor are correct. In FTIR due to the inclusion of new moieties, several peaks were labeled in the finger-print range that belongs to reactants. In X-ray analysis, LCP24 (containing PET) was found to be more crystalline than LCP25 (containing PEN) which is due to the symmetrical configuration. Block segments were more pronounced in wholly aromatic LCP2 than LCP24 that has flexible spacers. Another important finding is that, as the amount of the charge to the reactor increases CEG value increases and molecular weight of the product decreases. Selected group V species were employed as reinforcing agent and mixed with the thermoplastics
acrylonitrile butadiene styrene (ABS), nylon6 (PA6), polyethylene terephthalate (PET), polypropylene (PP) and appropriate compatibilizers in micro compounder and twin screw extruder. The blends of them were tested in dog-bone and/or fiber form. In general LCPs do not improve the mechanical properties except in composite application with polypropylene. A significant increase in tensile properties is observed by LCP24 and LCP25 usage. Capillary rheometer studies show that the viscosity of ABS decreases with the inclusion PA6 and LCP2 together. In addition to the composite applications, some LCPs are promising with new usage areas. Such as nano fibers with 200nm diameter were obtained from LCP27 by electrospinning method. The high dielectric constant of LCP29 has shown that it may have application areas in capacitors.
Vasconcelos, Inês. "Développement d’outils millifluidiques pour l’acquisition de données physico-chimiques sur des systèmes de polycondensation." Thesis, Bordeaux 1, 2010. http://www.theses.fr/2010BOR14086/document.
Full textThis work originated from a Rhodia’s Process Intensification project, where new physicochemical data are needed. We have developed at the laboratory new millifluidic devices which operate in conditions previously unexplored: up to 300 °C and 50 bar. A rheological study on nylon salt solutions was carried out and a new correlation based on the experimental results was provided. It is now used in the design of the industrial process of polyamide-6,6 synthesis. Moreover, a kinetic study on the polymerization of ethylene glycol with adipic acid allowed us to determine the kinetic coefficients of the reaction and the corresponding activation energy. Finally, a millifluidic process where the water produced by the polymerization reaction is eliminated by stripping and membrane separation was also developed, allowing for the chemical equilibrium to be shifted. A model describing this process has also been proposed
Hassan, Mohamed K. I. "Novel Elastomers, Characterization Techniques, and Improvements in the Mechanical Properties of Some Thermoplastic Biodegradable Polymers and Their Nanocomposites." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1086633832.
Full textGerard, Eric-Jack. "Synthese, caracterisation et comportement de polyurethannes hydrophiles : etude du mecanisme de la polycondensation reticulante." Université Louis Pasteur (Strasbourg) (1971-2008), 1988. http://www.theses.fr/1988STR13192.
Full textBooks on the topic "Condensation polymerization"
Fakirov, Stoyko. Transreactions in Condensation Polymers. Wiley & Sons, Limited, John, 2007.
Find full textStoĭko, Fakirov, ed. Transreactions in condensation polymers. Weinheim: Wiley-VCH, 1999.
Find full textFakirov, Stoyko. Transreactions in Condensation Polymers. Wiley & Sons, Incorporated, John, 2008.
Find full textUnited States. National Aeronautics and Space Administration., ed. Condensation polyimides. [Washington, D.C.?: National Aeronautics and Space Administration, 1989.
Find full textNel, Jan Geldenhuys. Acyclic diene metathesis, a new equilibrium step propagation, condensation polymerization. 1989.
Find full textF, Gratz Roy, and United States. National Aeronautics and Space Administration., eds. 3F condensation polyimides: Review and update. [Washington, DC: National Aeronautics and Space Administration, 1989.
Find full textBook chapters on the topic "Condensation polymerization"
Gooch, Jan W. "Condensation Polymerization." In Encyclopedic Dictionary of Polymers, 164. New York, NY: Springer New York, 2011. http://dx.doi.org/10.1007/978-1-4419-6247-8_2799.
Full textMILLER, I. K., and J. ZIMMERMAN. "Condensation Polymerization and Polymerization Mechanisms." In ACS Symposium Series, 159–73. Washington, D.C.: American Chemical Society, 1985. http://dx.doi.org/10.1021/bk-1985-0285.ch008.
Full textAmbade, Ashootosh V. "Metal-Catalyzed Condensation Polymerization." In Metal-Catalyzed Polymerization, 203–20. Boca Raton : CRC Press, 2018.: CRC Press, 2017. http://dx.doi.org/10.1201/9781315153919-7.
Full textAmbade, Ashootosh. "Metal-Catalyzed Condensation Polymerization." In Metal-Catalyzed Polymerization, 203–20. Taylor & Francis Group, 6000 Broken Sound Parkway NW, Suite 300, Boca Raton, FL 33487-2742: CRC Press, 2017. http://dx.doi.org/10.1201/9781315153919-8.
Full textKade, Matthew, and Matthew Tirrell. "Free Radical and Condensation Polymerizations." In Monitoring Polymerization Reactions, 1–28. Hoboken, NJ: John Wiley & Sons, 2014. http://dx.doi.org/10.1002/9781118733813.ch1.
Full textYokozawa, Tsutomu, and Yoshihiro Ohta. "Chain-Growth Condensation Polymerization." In Encyclopedia of Polymeric Nanomaterials, 347–57. Berlin, Heidelberg: Springer Berlin Heidelberg, 2015. http://dx.doi.org/10.1007/978-3-642-29648-2_177.
Full textYokozawa, Tsutomu, and Yoshihiro Ohta. "Chain-Growth Condensation Polymerization." In Encyclopedia of Polymeric Nanomaterials, 1–10. Berlin, Heidelberg: Springer Berlin Heidelberg, 2014. http://dx.doi.org/10.1007/978-3-642-36199-9_177-1.
Full textVerbicky, J. W. "Condensation Macrocyclic Oligomers: Synthesis and Polymerization." In Progress in Pacific Polymer Science, 89–91. Berlin, Heidelberg: Springer Berlin Heidelberg, 1991. http://dx.doi.org/10.1007/978-3-642-84115-6_12.
Full textLee, K. N., H. J. Lee, J. Y. Lee, Y. J. Suh, and J. H. Kim. "Dispersed Condensation Polymerization in Supercritical Fluids." In ACS Symposium Series, 152–67. Washington, DC: American Chemical Society, 2001. http://dx.doi.org/10.1021/bk-2002-0801.ch012.
Full textDickson, Ronald S. "Oligomerization, Polymerization and Related Condensation Reactions." In Catalysis by Metal Complexes, 176–94. Dordrecht: Springer Netherlands, 1985. http://dx.doi.org/10.1007/978-94-009-5267-6_7.
Full textConference papers on the topic "Condensation polymerization"
Hatcher, Patrick G., Hongmei Chen, Seyyedhadi Khatami, and Derek C. Waggoner. "Condensation and Polymerization Explain the Humification of Lignin into Aliphatic and Aromatic Structures in Soil." In 29th International Meeting on Organic Geochemistry. European Association of Geoscientists & Engineers, 2019. http://dx.doi.org/10.3997/2214-4609.201902860.
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