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Olariu MA, Hamciuc C, Asandulesa M, Hamciuc E, Epure E, Tsakiris V, Lisa G. Study on highly thermostable low‐k polymer films based on
fluorene‐containing
polyetherimides. POLYM ENG SCI 2021. [DOI: 10.1002/pen.25792] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Affiliation(s)
- Marius Andrei Olariu
- Electrical Engineering Faculty, Department of Electrical Measurements and Materials “Gh. Asachi” Technical University Iasi Romania
- R&D Department Prosupport Consulting SRL Iasi Romania
| | | | | | - Elena Hamciuc
- “Petru Poni” Institute of Macromolecular Chemistry Iasi Romania
| | - Elena‐Luiza Epure
- Faculty of Chemical Engineering and Environmental Protection “Cristofor Simionescu”, Department of Natural and Synthetic Polymers “Gh. Asachi” Technical University of Iasi Iasi Romania
| | - Violeta Tsakiris
- Department of Composite and Polymer Metallic Materials INCDIE ICPE‐CA Bucharest Romania
| | - Gabriela Lisa
- Faculty of Chemical Engineering and Environmental Protection “Cristofor Simionescu”, Department of Chemical Engineering “Gh. Asachi” Technical University of Iasi Iasi Romania
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Hamciuc E, Hamciuc C, Musteata VE, Kalvachev Y, Wolinska-Grabczyk A. Preparation and characterization of new polyimide films containing zeolite L and/or silica. HIGH PERFORM POLYM 2013. [DOI: 10.1177/0954008313505626] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
Abstract
New polyimide (PI) films containing zeolite L and/or silica, having a thickness of tens of micrometers, were prepared using a PI matrix with pendant carboxylic groups. The influence of various ratios of inorganic filler on thermal stability, dielectric behavior, and gas transport properties of the films was studied with respect to their structure. The surface morphology was investigated by scanning electron microscopy. The films were flexible, tough, and showed good thermal properties with a glass transition temperature in the range of 187–218°C. The dielectric spectroscopy revealed γ and β subglass transitions having the corresponding relaxation activation energy in the range of 44.7–51.4 kJ mol−1 and 65.1–121.6 kJ mol−1, respectively. At temperatures above 200°C, a conductivity relaxation process was evidenced. Gas permeation tests using small molecules (O2, N2 and CO2), at 6 atm and 30°C, indicated that the PI films containing higher amount of zeolite showed the highest permeability for all gases.
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Affiliation(s)
- Elena Hamciuc
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
| | - Corneliu Hamciuc
- “Petru Poni” Institute of Macromolecular Chemistry, Iasi, Romania
| | | | - Yuri Kalvachev
- Institute of Mineralogy and Crystallography, Sofia, Bulgaria
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Hamciuc C, Carja ID, Hamciuc E, Vlad-Bubulac T, Ignat M. Phthalonitrile-containing aromatic polyimide thin films with nano-actuation properties. POLYM ADVAN TECHNOL 2012. [DOI: 10.1002/pat.3079] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Corneliu Hamciuc
- “Petru Poni” Institute of Macromolecular Chemistry; Aleea Gr. Ghica Voda 41A; Iasi; 700487; Romania
| | - Ionela-Daniela Carja
- “Petru Poni” Institute of Macromolecular Chemistry; Aleea Gr. Ghica Voda 41A; Iasi; 700487; Romania
| | - Elena Hamciuc
- “Petru Poni” Institute of Macromolecular Chemistry; Aleea Gr. Ghica Voda 41A; Iasi; 700487; Romania
| | - Tăchiţă Vlad-Bubulac
- “Petru Poni” Institute of Macromolecular Chemistry; Aleea Gr. Ghica Voda 41A; Iasi; 700487; Romania
| | - Mircea Ignat
- National Institute for Research and Development in Electrical Engineering ICPE-CA; Splaiul Unirii 313; Bucharest; 030138; Romania
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Shi H, Li Y, Guo T. In situpreparation of transparent polyimide nanocomposite with a small load of graphene oxide. J Appl Polym Sci 2012. [DOI: 10.1002/app.38519] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
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