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Serbezeanu D, Vlad-Bubulac T, Onofrei MD, Doroftei F, Hamciuc C, Ipate AM, Anisiei A, Lisa G, Anghel I, Şofran IE, Popescu V. Phosphorylated Poly(vinyl alcohol) Electrospun Mats for Protective Equipment Applications. NANOMATERIALS 2022; 12:nano12152685. [PMID: 35957115 PMCID: PMC9370101 DOI: 10.3390/nano12152685] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/13/2022] [Revised: 07/30/2022] [Accepted: 08/02/2022] [Indexed: 12/10/2022]
Abstract
The development of intelligent materials for protective equipment applications is still growing, with enormous potential to improve the safety of personnel functioning in specialized professions, such as firefighters. The design and production of such materials by the chemical modification of biodegradable semisynthetic polymers, accompanied by modern manufacturing techniques such as electrospinning, which may increase specific properties of the targeted material, continue to attract the interest of researchers. Phosphorus-modified poly(vinyl alcohol)s have been, thus, synthesized and utilized to prepare environmentally friendly electrospun mats. Poly(vinyl alcohol)s of three different molecular weights and degrees of hydrolysis were phosphorylated by polycondensation reaction in solution in the presence of phenyl dichlorophosphate in order to enhance their flame resistance and thermal stability. The thermal behavior and the flame resistance of the resulting phosphorus-modified poly(vinyl alcohol) products were investigated by thermogravimetric analysis and by cone calorimetry at a micro scale. Based on the as-synthesized phosphorus-modified poly(vinyl alcohol)s, electrospun mats were successfully fabricated by the electrospinning process. Rheology studies were performed to establish the optimal conditions of the electrospinning process, and scanning electron microscopy investigations were undertaken to observe the morphology of the phosphorus-modified poly(vinyl alcohol) electrospun mats.
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Affiliation(s)
- Diana Serbezeanu
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Tăchiță Vlad-Bubulac
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
- Correspondence:
| | - Mihaela Dorina Onofrei
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Florica Doroftei
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Corneliu Hamciuc
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Alina-Mirela Ipate
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Alexandru Anisiei
- “Petru Poni” Institute of Macromolecular Chemistry, Aleea Gr. Ghica Voda, 41A, 700487 Iasi, Romania
| | - Gabriela Lisa
- Department of Chemical Engineering, Faculty of Chemical Engineering and Environmental Protection, Gheorghe Asachi Technical University of Iasi, Bd. Mangeron 73, 700050 Iasi, Romania
| | - Ion Anghel
- Fire Officers Faculty, Police Academy “Alexandru Ioan Cuza”, Morarilor Str. 3, Sector 2, 022451 Bucharest, Romania
| | - Ioana-Emilia Şofran
- Fire Officers Faculty, Police Academy “Alexandru Ioan Cuza”, Morarilor Str. 3, Sector 2, 022451 Bucharest, Romania
| | - Vasilica Popescu
- Department of Chemical Engineering in Textiles and Leather, Gheorghe Asachi Technical University of Iasi, Bd. Mangeron 73, 700050 Iasi, Romania
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Hirai S, Phanthong P, Wakabayashi T, Yao S. Fabrication of Porous Polyimide Membrane with Through-Hole via Multiple Solvent Displacement Method. ChemistryOpen 2021; 10:352-359. [PMID: 33605559 PMCID: PMC7953477 DOI: 10.1002/open.202000299] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2020] [Revised: 01/19/2021] [Indexed: 11/24/2022] Open
Abstract
Porous polyimide (PI) membranes are widely used in separation processes because of their excellent thermal and mechanical properties. However, the applications of porous PI membranes are limited in the nanofiltration range. In this study, porous PI membranes with through-holes have been successfully fabricated by the novel multiple solvent displacement method. This new method requires only a porous polyamic acid (PAA) membrane, which was prepared by immersing PAA film in N-methylpyrrolidoneebk; (NMP) prior to immersing it in a mixed solvent consisting of NMP and a poor solvent, followed by immersion only in poor solvent. The pore size, morphology, porosity, and air permeability demonstrated that the fabricated PI membranes had a uniformly porous structure with through-holes over their surface. This new method enabled control of pore size (3-11 μm) by selecting a suitable poor solvent. This multiple solvent displacement method is highly versatile and promising for the fabrication of porous PI membranes.
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Affiliation(s)
- Sho Hirai
- Research Institute for the Creation of Functional and Structural MaterialsFukuoka University8-19-1 NanakumaJonan-kuFukuoka814-0180Japan
| | - Patchiya Phanthong
- Research Institute for the Creation of Functional and Structural MaterialsFukuoka University8-19-1 NanakumaJonan-kuFukuoka814-0180Japan
| | - Tsubasa Wakabayashi
- Graduate School of Chemical EngineeringFukuoka University8-19-1 NanakumaJonan-kuFukuoka814-0180Japan
| | - Shigeru Yao
- Research Institute for the Creation of Functional and Structural MaterialsFukuoka University8-19-1 NanakumaJonan-kuFukuoka814-0180Japan
- Graduate School of Chemical EngineeringFukuoka University8-19-1 NanakumaJonan-kuFukuoka814-0180Japan
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Guo F, Zhang Z, Xu X, Jiang W, Wang K. Tribological properties of PBO fabric composites modified by poly (vinyl alcohol). J Appl Polym Sci 2013. [DOI: 10.1002/app.39316] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Fang Guo
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences; Lanzhou 730000 China
| | - Zhaozhu Zhang
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences; Lanzhou 730000 China
| | - Xianghui Xu
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences; Lanzhou 730000 China
| | - Wei Jiang
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences; Lanzhou 730000 China
| | - Kun Wang
- State Key Laboratory of Solid Lubrication; Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences; Lanzhou 730000 China
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