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Cerrada ML, Arranz-Andrés J, Caballero-González A, Blázquez-Blázquez E, Pérez E. The β Form in PVDF Nanocomposites with Carbon Nanotubes: Structural Features and Properties. Polymers (Basel) 2023; 15:polym15061491. [PMID: 36987271 PMCID: PMC10056646 DOI: 10.3390/polym15061491] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2023] [Revised: 02/28/2023] [Accepted: 03/14/2023] [Indexed: 03/19/2023] Open
Abstract
Different amounts of carbon nanotubes (CNT) have been incorporated in materials based on poly(vinylidene fluoride) (PVDF) by solvent blending followed by their further precipitation. Final processing was performed by compression molding. The morphological aspects and crystalline characteristics have been examined, additionally exploring in these nanocomposites the common routes described in the pristine PVDF to induce the β polymorph. This polar β phase has been found to be promoted by the simple inclusion of CNT. Therefore, coexistence of the α and β lattices occurs for the analyzed materials. The real-time variable-temperature X-ray diffraction measurements with synchrotron radiation at a wide angle have undoubtedly allowed us to observe the presence of the two polymorphs and determine the melting temperature of both crystalline modifications. Furthermore, the CNT plays a nucleating role in the PVDF crystallization, and also acts as reinforcement, increasing the stiffness of the nanocomposites. Moreover, the mobility within the amorphous and crystalline PVDF regions is found to change with the CNT content. Finally, the presence of CNT leads to a very remarkable increase in the conductivity parameter, in such a way that the transition from insulator to electrical conductor is reached in these nanocomposites at a percolation threshold ranging from 1 to 2 wt.%, leading to the excellent value of conductivity of 0.05 S/cm in the material with the highest content in CNT (8 wt.%).
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Song T, Wang Y, Li H, Wang H, Sun X, Yan S. Influence of Aliphatic Polyesters on the γ Phase Crystallization of Poly(vinylidene fluoride). Macromolecules 2022. [DOI: 10.1021/acs.macromol.2c01670] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/05/2022]
Affiliation(s)
- Tiantian Song
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing100029, China
| | - Yuxin Wang
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing100029, China
| | - Huihui Li
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing100029, China
| | - Haijun Wang
- Shaanxi University of Science and Technology, Xi’an710021, China
| | - Xiaoli Sun
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing100029, China
| | - Shouke Yan
- State Key Laboratory of Chemical Resource Engineering, Beijing University of Chemical Technology, Beijing100029, China
- Key Laboratory of Rubber-Plastics of Ministry of Education, Shandong Provincial Key Laboratory of Rubber-Plastics, Qingdao University of Science & Technology, No. 53 Zhengzhou Rd., Qingdao266042, China
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Relationship between Localization of PBSU in Interlamellar/Interfibrillar Regimes and Double Peaks in DSC/SAXS in its Blend with PVDF. CHINESE JOURNAL OF POLYMER SCIENCE 2022. [DOI: 10.1007/s10118-022-2718-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
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Fakhri V, Monem M, Mir Mohamad Sadeghi G, Khonakdar HA, Goodarzi V, Karimpour‐Motlagh N. Impact of poly(ε‐caprolactone) on the thermal,
dynamic‐mechanical
and crystallization behavior of polyvinylidene fluoride/poly(ε‐caprolactone) blends in the presence of
KIT
‐6 mesoporous particles. POLYM ADVAN TECHNOL 2021. [DOI: 10.1002/pat.5444] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Affiliation(s)
- Vafa Fakhri
- Department of Polymer Engineering Amirkabir University of Technology Tehran Iran
| | - Mohammad Monem
- Department of Polymer Engineering Amirkabir University of Technology Tehran Iran
| | | | - Hossein Ali Khonakdar
- Department of Processing Iran Polymer and Petrochemical Institute Tehran Iran
- Reactive processing Leibniz Institute of Polymer Research Dresden Dresden Germany
| | - Vahabodin Goodarzi
- Applied Biotechnology Research Center Baqiyatallah University of Medical Sciences Tehran Iran
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