Bibliografie tematiche / Hyper-Crosslinked polymers

Letteratura scientifica selezionata sul tema "Hyper-Crosslinked polymers"

Autore: Grafiati
Pubblicato: 8 giugno 2024

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  2. Tesi
  3. Libri
  4. Capitoli di libri
  5. Atti di convegni

Articoli di riviste sul tema "Hyper-Crosslinked polymers":

1

Rubin Pedrazzo, Alberto, Fabrizio Caldera, Marco Zanetti, Silvia Lucia Appleton, Nilesh Kumar Dahkar e Francesco Trotta. "Mechanochemical green synthesis of hyper-crosslinked cyclodextrin polymers". Beilstein Journal of Organic Chemistry 16 (29 giugno 2020): 1554–63. http://dx.doi.org/10.3762/bjoc.16.127.

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Abstract (sommario):
Cyclodextrin nanosponges (CD-NS) are nanostructured crosslinked polymers made up of cyclodextrins. The reactive hydroxy groups of CDs allow them to act as multifunctional monomers capable of crosslinking to bi- or multifunctional chemicals. The most common NS synthetic pathway consists in dissolving the chosen CD and an appropriate crosslinker in organic polar aprotic liquids (e.g., N,N-dimethylformamide or dimethyl sulfoxide), which affect the final result, especially for potential biomedical applications. This article describes a new, green synthetic pathway through mechanochemistry, in particular via ball milling and using 1,1-carbonyldiimidazole as the crosslinker. The polymer obtained exhibited the same characteristics as a CD-based carbonate NS synthesized in a solvent. Moreover, after the synthesis, the polymer was easily functionalized through the reaction of the nucleophilic carboxylic group with three different organic dyes (fluorescein, methyl red, and rhodamine B) and the still reactive imidazoyl carbonyl group of the NS.
2

Jeon, Hyo Jin, Dong Ok Kim, Jea Sung Park, Jong Sik Kim, Dong Wook Kim, Mi Sun Jung, Seong Whan Shin e Sang Wook Lee. "Synthesis of Hyper Crosslinked Polymer Particle Having Hydroxyl Group". Polymer Korea 35, n. 1 (31 gennaio 2011): 66–71. http://dx.doi.org/10.7317/pk.2011.35.1.66.

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3

Guo, Ziyang, Xiaodong Tian, Yan Song, Tao Yang, Zihui Ma, Xiangjie Gong e Chao Wang. "Hard Carbons Derived from Phenyl Hyper-Crosslinked Polymers for Lithium-Ion Batteries". Coatings 13, n. 2 (13 febbraio 2023): 421. http://dx.doi.org/10.3390/coatings13020421.

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Hyper-crosslinked polymers are attracting extensive attention owing to their ease of design and synthesis. Based on the flexibility of its molecular design, a hyper-crosslinked polymer with a π-conjugated structure and its derived carbon were synthesized by the Friedel–Crafts reaction. The polymer and its derived hard carbon material were characterized by FTIR, 13C NMR, Raman, BET, and other characterization tools. The electrochemical properties of both materials as anode electrodes of lithium-ion batteries were investigated. Benefiting from the highly cross-linked skeleton and conjugated structure, the as-prepared carbon materials still had high specific surface area (583 m2 g−1) and porosity (0.378 cm3 g−1) values. The hard carbon (CHCPB) anode possessed the powerful reversible capacity of 699 mAh g−1 at 0.1A g−1, and it had an excellent rate of performance of 165 mAh g−1 at the large current density of 5.0 A g−1. Long-cycle performance for 2000 charge/discharge cycles displayed that the capacity was kept at 148 mAh g−1 under 2 A g−1. This work contributes to a better understanding of the properties of hard carbon materials derived from hyper-crosslinked polymers and how this class of materials can be further exploited in various applications.
4

Nikoshvili, L., A. Bertova, E. Sulman e L. Kiwi-Minsker. "Hyper-crosslinked Polystyrene as a Support for Development of Hydrogenation Catalysts: Influence of Porosity". Bulletin of Science and Practice 5, n. 12 (15 dicembre 2019): 47–53. http://dx.doi.org/10.33619/2414-2948/49/05.

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This paper is devoted to the prospects for the use of hyper-crosslinked polystyrene as a support for the development of catalysts for selective hydrogenation of alkynols for synthesis of fragrant substances and fat-soluble vitamins E and K. Various types of hyper-crosslinked polystyrene, characterized by different porosity, were used for the synthesis of palladium catalysts by wet-impregnation of polymers with palladium acetate. It was shown that in the case of C5 alkynol, the pore structure of the polymers does not significantly affect the observed catalytic activity, whereas for C10 and C20 alkynols, mesoporous polymers are preferable for use as supports.
5

Jia, Ziyan, Jiannan Pan, Chen Tian e Daqiang Yuan. "Twisted molecule-based hyper-crosslinked porous polymers for rapid and efficient removal of organic micropollutants from water". RSC Advances 8, n. 64 (2018): 36812–18. http://dx.doi.org/10.1039/c8ra04792h.

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6

Быков, Алексей Владимирович, e Галина Николаевна Демиденко. "THERMAL STABILITY AND POROSITY OF HYPER-CROSSLINKED AROMATIC POLYMERS". Вестник Тверского государственного университета. Серия: Химия, n. 2(40) (6 giugno 2020): 62–72. http://dx.doi.org/10.26456/vtchem2020.2.8.

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В работе методами сопряженной с масс-спектрометрией термогравиметрии, физической адсорбции азота, инфракрасной спектроскопии диффузного отражения и рентгенофотоэлектронной спектроскопии проведено исследование изменений пористости и состава функциональных групп полимера MN270 в температурном диапазоне от 30 до 600С. В ходе исследования показано, что при разогреве ненаполненного металлами полимера его микропористая структура рушится при температурах ниже 300С, в то время как разрушение, связанное с деструкцией и деполимеризацией самой полимерной матрицы, происходит при температурах выше 350С. Thermogravimetry coupled with mass spectrometry, nitrogen physisorption, diffuse reflection infrared spectroscopy, and x-ray photoelectron spectroscopy were used to study changes in the porosity and composition of functional groups of the MN270 polymer in the temperature range from 30 to 600C. The study shows that when an unfilled with metals polymer is heated, its microporous structure collapses at temperatures below 300C, while the destruction associated with the destruction and depolymerization of the polymer matrix occurs at temperatures above 350C.
7

Ramirez-Vidal, Pamela, Fabián Suárez-García, Rafael L. S. Canevesi, Alberto Castro-Muñiz, Philippe Gadonneix, Juan Ignacio Paredes, Alain Celzard e Vanessa Fierro. "Irreversible deformation of hyper-crosslinked polymers after hydrogen adsorption". Journal of Colloid and Interface Science 605 (gennaio 2022): 513–27. http://dx.doi.org/10.1016/j.jcis.2021.07.104.

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8

Meng, Bo, Haiying Li, Shannon M. Mahurin, Honglai Liu e Sheng Dai. "Hyper-crosslinked cyclodextrin porous polymer: an efficient CO2 capturing material with tunable porosity". RSC Advances 6, n. 111 (2016): 110307–11. http://dx.doi.org/10.1039/c6ra18307g.

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Abstract (sommario):
Several cyclodextrin (CD)-based hyper-crosslinked porous polymers (HCPPs) were designed and synthesized for selective CO2 adsorption and storage. A feasible way to tailor the porosity of the materials was also established.
9

Li, Haiying, Bo Meng, Shannon M. Mahurin, Song-Hai Chai, Kimberly M. Nelson, David C. Baker, Honglai Liu e Sheng Dai. "Carbohydrate based hyper-crosslinked organic polymers with –OH functional groups for CO2 separation". Journal of Materials Chemistry A 3, n. 42 (2015): 20913–18. http://dx.doi.org/10.1039/c5ta03213j.

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A class of novel hyper-crosslinked microporous polymers, based on green and renewable carbohydrates, was synthesized for carbon capture and storage with high CO2/N2 selectivity by hydrogen bonding and dipole–quadrupole interactions.
10

Fayemiwo, Kehinde A., Goran T. Vladisavljević, Seyed Ali Nabavi, Brahim Benyahia, Dawid P. Hanak, Konstantin N. Loponov e Vasilije Manović. "Nitrogen-rich hyper-crosslinked polymers for low-pressure CO2 capture". Chemical Engineering Journal 334 (febbraio 2018): 2004–13. http://dx.doi.org/10.1016/j.cej.2017.11.106.

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Ti possono interessare anche gli elenchi estesi di opere sul tema "Hyper-Crosslinked polymers":
Articoli di riviste

Tesi sul tema "Hyper-Crosslinked polymers":

1

Ramirez, Vidal Pamela. "Matériaux nanoporeux à haute surface spécifique pour le stockage et la compression de l’hydrogène". Electronic Thesis or Diss., Université de Lorraine, 2021. http://www.theses.fr/2021LORR0178.

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Dans cette thèse, les performances d’adsorption d’hydrogène de trois familles de matériaux poreux à grande surface spécifique : les polymères hyper-réticulés (HCP), les charbons actifs commerciaux (CAC) et les réseaux organométalliques (MOF) ont été étudiées. Cette étude se compose de deux parties interconnectées : (i) l’évaluation expérimentale des performances de stockage de l’hydrogène dans les trois familles de matériaux ; et (ii) la modélisation du stockage de l’hydrogène dans les CAC et MOF à des températures comprises entre 77 et 273 K et à des pressions allant jusqu’à 14 MPa. La déformation irréversible des HCP après l’adsorption d’hydrogène à 77 K et à 14 MPa est signalée ici pour la première fois. Les isothermes d’adsorption d’hydrogène obtenues jusqu’à 14 MPa ont été ajustées avec l’équation modifiée de Dubinin-Astakhov afin de déterminer la signification physique de leurs paramètres, qui n’avait pas été révélée jusqu’à présent. Les résultats obtenus dans cette thèse permettront de prédire les capacités d’adsorption d’hydrogène à des températures et pressions spécifiques après une caractérisation adéquate de la texture du matériau adsorbant, ce qui représente une économie importante de temps et de moyens. Ce travail a été réalisé au sein de l’équipe 402 "Matériaux Biosourcés" de l’Institut Jean Lamour (IJL – UMR CNRS 7198), hébergée par l’Ecole Nationale des Techniques et Industries du Bois (ENSTIB), à l’Université de Lorraine. Plusieurs partenaires ont été impliqués dans ce projet, tels que: l’Instituto Nacional del Carbón (INCAR – CSIC) à Oviedo en Espagne; et le Laboratoire Énergies et Mécanique Théorique et Appliquée (LEMTA-UMR 7563 CNRS-UL) à Vandoeuvre lès Nancy en France
In this thesis, the hydrogen adsorption performance of three families of large surface area porous materials: hyper-crosslinked polymers (HCPs), commercial activated carbons (CACs) and metal-organic frameworks (MOFs) was studied. Two interconnected parts constituted this study: (i) the experimental evaluation of hydrogen storage performance in the three families of materials; and (ii) the modelling of hydrogen storage in CAC and MOF at temperatures between 77 and 273 K and at pressures up to 14 MPa. Irreversible deformation in HCPs after hydrogen adsorption at 77 K and 14 MPa is reported here for the first time. The hydrogen adsorption isotherms obtained up to 14 MPa were fitted with the Modified Dubinin-Astakhov equation in order to determine the physical meaning of their parameters, which had not been revealed until now. The results obtained in this thesis will allow the prediction of hydrogen adsorption capacities at specific temperatures and pressures after an adequate characterization of the adsorbent material texture, which represents a significant saving of time and resources. The thesis is divided in chapters related to each family of studied. Finally, the conclusions and perspectives of this study are presented.This work was carried out in the team 402 "Biosourced Materials" of the Institut Jean Lamour (IJL - UMR CNRS 7198), hosted by the “Ecole Nationale des Techniques et Industries du Bois” (ENSTIB), at the University of Lorraine. Several partners have been involved in this project, such as: the Instituto Nacional del Carbón (INCAR - CSIC) in Oviedo, Spain; and the Laboratoire Énergies et Mécanique Théorique et Appliquée (LEMTA-UMR 7563 CNRS-UL) in Vandoeuvre lès Nancy in France

Libri sul tema "Hyper-Crosslinked polymers":

1

Korolev, G. V. Three-Dimensional Free-Radical Polymerization: Cross-Linked and Hyper-Branched Polymers. Berlin, Heidelberg: Springer Berlin Heidelberg, 2009.

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Capitoli di libri sul tema "Hyper-Crosslinked polymers":

1

Arcentales-Vera, Belén, Lisandra Bastidas, Moises Bustamante-Torres, Paul Maldonado Pinos e Emilio Bucio. "Hyper-crosslinked Polymers". In Porous Polymer Science and Applications, 7–36. Boca Raton: CRC Press, 2022. http://dx.doi.org/10.1201/9781003169604-2.

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Atti di convegni sul tema "Hyper-Crosslinked polymers":

1

Castaldo, R., V. Ambrogi, R. Avolio, C. Cocca, M. E. Errico, G. Gentile, M. Avella e C. Carfagna. "Hyper-crosslinked resins filled with multiwalled carbon nanotubes". In VIII INTERNATIONAL CONFERENCE ON “TIMES OF POLYMERS AND COMPOSITES”: From Aerospace to Nanotechnology. Author(s), 2016. http://dx.doi.org/10.1063/1.4949638.

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2

Song, Tao, Mohamed Ahdaya, Shuda Zhao, Yang Zhao, Thomas Schuman e Baojun Bai. "Comprehensive Evaluation of a Novel Recrosslinkable Hyper Branched Preformed Particle Gels for the Conformance Control of High Temperature Reservoirs". In SPE Improved Oil Recovery Conference. SPE, 2022. http://dx.doi.org/10.2118/209451-ms.

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Abstract The existence of high conductivity features such as fractures, karst zones, and void space conduits can severely restrict the sweep efficiency of water or polymer flooding. Preformed particle gel (PPG), as a cost-effective technology, has been applied to control excessive water production. However, conventional PPG has limited plugging efficiency in high-temperature reservoirs with large fractures or void space conduits. After water breakthrough, gel particles can easily be washed out from the fractures due to the lack of particle-particle association and particle-rock adhesion. This paper presents a comprehensive laboratory evaluation of a novel water-swellable high-temperature resistant hyper-branched re-crosslinkable preformed particle gel (HT-BRPPG) designed for North Sea high-temperature reservoirs (130 °C), which can re-crosslink to form a rubber-like bulk gel to plug such high conductivity features. This paper systematically evaluated the swelling kinetics, long-term thermal stability and plugging performance of the HT-BRPPG. Bottle tests were employed to test the swelling kinetic and re-crosslinking behavior. High-pressure resistant glass tubes were used to test the long-term thermal stability of the HT-BRPPG at different temperatures, and the testing lasted for over one year. The plugging efficiency was evaluated by using a fractured model. Results showed that this novel HT-BRPPG could re-crosslink and form a rubber-like bulky gel with temperature ranges from 80 to 130 °C. The elastic modulus of the re-crosslinked gel can reach up to 830 Pa with a swelling ratio of 10. In addition, the HT-BRPPG with a swelling ratio of 10 has been stable for over 15 months at 130 °C so far. The core flooding test proved that the HT-BRPPG could efficiently plug the open fractures, and the breakthrough pressure is 387.9 psi/ft. Therefore, this novel BRPPG could provide a solution to improve the conformance of high-temperature reservoirs with large fractures or void space conduits.

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