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Achache F, Khouba Z, Benabdallah T, Maschke U, Hadj Youcef M. Phase transition behavior of pentylcyanobiphenyl liquid crystal containing n-dodecyl-2-hydroxy-1-naphthaldimine. J DISPER SCI TECHNOL 2023. [DOI: 10.1080/01932691.2022.2161561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Affiliation(s)
- Fatiha Achache
- Département de Chimie Physique, Faculté de Chimie, Université des Sciences et de la Technologie d’Oran Mohamed Boudiaf USTO-MB, Laboratoire de Chimie et d’Electrochimie des Complexes Métalliques (LCECM), USTO-MB, Oran, Algeria
- Unité Matériaux et Transformations UMET (UMR CNRS N°8207), Bâtiment C6, Université Lille 1 - Sciences et Technologies, Villeneuve d’Ascq Cedex, France
| | - Zoulikha Khouba
- Département de Chimie Physique, Faculté de Chimie, Université des Sciences et de la Technologie d’Oran Mohamed Boudiaf USTO-MB, Laboratoire de Chimie et d’Electrochimie des Complexes Métalliques (LCECM), USTO-MB, Oran, Algeria
- Unité Matériaux et Transformations UMET (UMR CNRS N°8207), Bâtiment C6, Université Lille 1 - Sciences et Technologies, Villeneuve d’Ascq Cedex, France
| | - Tayeb Benabdallah
- Département de Chimie Physique, Faculté de Chimie, Université des Sciences et de la Technologie d’Oran Mohamed Boudiaf USTO-MB, Laboratoire de Chimie et d’Electrochimie des Complexes Métalliques (LCECM), USTO-MB, Oran, Algeria
| | - Ulrich Maschke
- Unité Matériaux et Transformations UMET (UMR CNRS N°8207), Bâtiment C6, Université Lille 1 - Sciences et Technologies, Villeneuve d’Ascq Cedex, France
| | - Mohammed Hadj Youcef
- Département de Chimie Physique, Faculté de Chimie, Université des Sciences et de la Technologie d’Oran Mohamed Boudiaf USTO-MB, Laboratoire de Chimie et d’Electrochimie des Complexes Métalliques (LCECM), USTO-MB, Oran, Algeria
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Totsch TR, Popov I, Stanford VL, Lucius AL, Foulger SH, Gray GM. Polyphosphonates as ionic conducting polymers. JOURNAL OF POLYMER SCIENCE 2021. [DOI: 10.1002/pol.20200561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Timothy R. Totsch
- Department of Chemistry University of Alabama at Birmingham Birmingham Alabama USA
| | - Ivan Popov
- Chemical Sciences Division Oak Ridge National Laboratory Oak Ridge Tennessee USA
| | - Victoria L. Stanford
- Department of Chemistry University of Alabama at Birmingham Birmingham Alabama USA
| | - Aaron L. Lucius
- Department of Chemistry University of Alabama at Birmingham Birmingham Alabama USA
| | - Stephen H. Foulger
- Department of Materials Science and Engineering Clemson University Clemson South Carolina USA
| | - Gary M. Gray
- Department of Chemistry University of Alabama at Birmingham Birmingham Alabama USA
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Totsch TR, Stanford VL, Klep O, Burdette MK, Grant B, Foulger SH, Gray GM. Synthesis and characterization of modular polyphosphonate homopolymers and copolymers. JOURNAL OF POLYMER SCIENCE 2020. [DOI: 10.1002/pol.20200066] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Timothy R. Totsch
- Department of Chemistry University of Alabama at Birmingham Birmingham Alabama USA
| | - Victoria L. Stanford
- Department of Chemistry University of Alabama at Birmingham Birmingham Alabama USA
| | - Oleksander Klep
- Department of Materials Science and Engineering and Center for Optical Materials Science and Engineering Technologies Clemson South Carolina USA
| | - Mary K. Burdette
- Department of Materials Science and Engineering and Center for Optical Materials Science and Engineering Technologies Clemson South Carolina USA
| | - Benjamin Grant
- Department of Materials Science and Engineering and Center for Optical Materials Science and Engineering Technologies Clemson South Carolina USA
| | - Stephen H. Foulger
- Department of Materials Science and Engineering and Center for Optical Materials Science and Engineering Technologies Clemson South Carolina USA
| | - Gary M. Gray
- Department of Chemistry University of Alabama at Birmingham Birmingham Alabama USA
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Vini R, Murugavel SC. Photoisomerization and thermal degradation kinetics of poly(ether–ester)s containing azomethine moiety in the main chain. HIGH PERFORM POLYM 2019. [DOI: 10.1177/0954008319850614] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/17/2022]
Abstract
Poly(ether–ester)s containing azomethine group in the main chain were synthesized by solution polycondensation of 4,4′-bis(3-hydroxypropyloxy)- N-benzylidene aniline with adipoyl and terephthaloyl diacid chlorides. The synthesized poly(ether–ester)s were characterized by Fourier transform infrared and proton, and carbon-13 nuclear magnetic resonance spectroscopic techniques. Thermal properties were studied using thermogravimetric analysis (TGA) and differential scanning calorimetry. Thermal degradation kinetics of poly(ether–ester)s were characterized by TGA at various heating rates (5°C min−1, 10°C min−1, and 20°C min−1). The apparent activation energy for the degradation of both the polymers was determined by three different non-isothermal model-free kinetics methods (Friedmann, Flynn–Wall Ozawa, and Kissinger–Akahira–Sunose). The photoisomerization property was examined with ultraviolet (UV) spectroscopy, and the polymer PEE1 showed a rate of trans to cis isomerization ranging 10–20 s, whereas reverse process took around 100 min in solution. UV studies suggested that this material may be used in the field of rewritable applications.
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Affiliation(s)
- R Vini
- Polymer Research Laboratory, Chemistry Division, Department of Applied Science, PSG College of Technology, Coimbatore, Tamil Nadu, India
| | - SC Murugavel
- Polymer Research Laboratory, Chemistry Division, Department of Applied Science, PSG College of Technology, Coimbatore, Tamil Nadu, India
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