Optimization of the fabrication of amidoxime modified PIM-1 electrospun fibres for use as breathable and reactive materials

Lasseuguette, Elsa; Malpass‐Evans, Richard; Casalini, Sara; McKeown, Neil B.; Ferrari, Maria-Chiara

doi:10.1016/j.polymer.2020.123205

Cited by 18 publications

(18 citation statements)

References 51 publications

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“…As indicated above (Section 2.3.2), it is preferred to use the airflow resistance than the air permeability, meaning that a high value of R Air represents a low permeable material, whereas a low value of R Air is representative of a highly permeable material. The PIM-EA-TB fibrous mats exhibited R Air from 25 × 10 7 m −1 to 5 × 10 7 m −1 , which are similar to standard values of R Air for commercial facemasks [12]. As expected, the air flow resistance decreased as the pore diameter increased (Figure 7b).…”

Section: Air Resistancesupporting

confidence: 80%

“…The mean diameters of the microfibres decreased from 4.9 ± 1, 3.9 ± 1 and 3.6 ± 1 µm to 2.7 ± 1, 3 ± 0.5 and 3.3 ± 0.5 µm to as a result of the increase in the applied voltage from 16 to 25 kV for 10:0 sample, 7:3 sample and 5:5 sample, respectively. Actually, increasing voltage induced a larger stretching of the solution resulting in the formation of thinner fibres [12,26,34,35].…”

Section: Effect Of Voltagementioning

confidence: 99%

“…The generation of fibres is based on the formation of a jet from a charged polymeric system under an electrical field. The solvent evaporation and the stretching of the jet, caused by the repulsive forces of the charged molecules within the jet, are responsible for the formation of the polymer fibres [8][9][10][11][12]. Thus, the final mat fibrous morphology depends on the polymer-solvent system (such as solvent nature, viscosity, conductivity) and on the electrospinning process parameters (such as feed flow rate, voltage, distance between the tip and the collector).…”

Section: Introductionmentioning

confidence: 99%

“…Another advantage of PIMs is their solution processability in common organic solvents which allow the optimisation of the macroscopic formation of the microporous polymer, for example as electrospun fibres, coatings on woven fabrics, etc. Among others, research on electrospun PIMs fibres, mainly on PIM-1 and on modified PIM-1, has been gaining momentum in recent years [6,12,[25][26][27][28]. Recently, a new type of PIM, derived from ethanoanthracene and Tröger's base (PIM-EA-TB), has been developed using a polymerisation reaction based on the formation of the bridged bicyclic diamine called Tröger's base (TB: 6H,12H-5,11methanodibenzo[b,f] [1,5]diazocine) [14,29].…”

Section: Introductionmentioning

confidence: 99%

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Control Over the Morphology of Electrospun Microfibrous Mats of a Polymer of Intrinsic Microporosity

et al. 2021

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This study reports for the first time the preparation of an electrospun microfibrous mat of PIM-EA-TB. The electrospinning was carried out using a chloroform/n-Propyl-lactate (n-PL) binary solvent system with different chloroform/nPL ratios, in order to control the morphology of the microfibres. With pure chloroform, porous and dumbbell shape fibres were obtained whereas, with the addition on n-PL, circular and thinner fibres have been produced due to the higher boiling point and the higher conductivity of n-PL. The electrospinning process conditions were investigated to evaluate their impact on the fibres’ morphology. These microfibrous mats presented potential to be used as breathable/waterproof materials, with a pore diameter of 11 μm, an air resistance of 25.10−7 m−1 and water breakthrough pressure of 50 mBar.

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Section: Air Resistancesupporting

confidence: 80%

Section: Effect Of Voltagementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Control Over the Morphology of Electrospun Microfibrous Mats of a Polymer of Intrinsic Microporosity

et al. 2021

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“…Accordingly, parameters of electrospinning can affect the final fibrous membrane characteristics in many ways. For example, increments in polymer concentration, [ 69 ] which lead to higher viscosities, [ 70 ] can generate fibers with larger diameters; the distance between the needle and the collector plays a vital role in the potential applied, solvent evaporation, and fiber elongation; [ 71 ] while surface tension [ 70 ] and conductivity [ 72 ] are associated to Taylor's cone stabilization and the spinnability. Additionally, several times those parameters do not act solely.…”

Section: Micro/nanofibers Fabricationmentioning

confidence: 99%

Tailoring the Surface Properties of Micro/Nanofibers Using 0D, 1D, 2D, and 3D Nanostructures: A Review on Post‐Modification Methods

Schneider

Facure

Chagas

et al. 2021

Adv Materials Inter

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Micro‐ and nanofibers produced by electrospinning and solution blow spinning (SBS) are highly suitable platforms for diverse applications due to their advantageous properties, including the high surface area to volume ratio, high porosity, and flexibility. To render them additional functionalities, distinct pre‐ or post‐modification processes have been proposed for modifying such micro‐ and nanofibers with 0D, 1D, 2D, and 3D nanostructures. The pre‐modification requires the addition of 0D–3D nanostructures (or their precursors) into the polymeric phase before the spinning process, which can demand laborious solubilization and requires changes in experimental spinning parameters, with impact on morphology, spinnability, and properties. Post‐modification methods, on the other hand, enable the fabrication of composite fibers without the need to optimize the spinning parameters, allowing a simple and efficient surface modification. Herein, recent advances on post‐modification methods of spun fibers, including wet chemistry, grafting, crosslinking, click chemistry, oxidations, hydrolysis and reduction strategies, dip‐coating, layer‐by‐layer, electro/air‐spray, atomic layer deposition, and plasma techniques aiming at the surface functionalization with 0D–3D nanostructures are surveyed. Recent results, trends, and challenges on the application of such surface‐modified fibers for environmental, industrial, and medical applications, including as adsorbent and filtering membranes, catalysts for pollutants degradation, and wearable sensors are examined.

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A review on emerging developments in thermal and moisture management by membrane‐based clothing systems towards personal comfort

Gorji

Mazinani

Gharehaghaji

2022

J of Applied Polymer Sci

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Enhanced heat and moisture management has become highly urgent to clothing systems due to the global need to personalize the ventilation process. As a significant sector of apparel industries, membrane‐based clothing systems offer protection and ventilation functionalities. This review aims at providing a new viewpoint on efforts to improve heat and moisture management in membrane‐based clothing systems according to the latest advances in this field. The study terminates with presenting a perspective on current challenges and opportunities for future research directions in personal thermal and moisture management technologies. In fact, membranes with different functionalities used in clothing systems such as photonic membranes with heating and cooling performances, unidirectional liquid transport membranes, waterproof‐breathable membranes, shape‐memory membranes, thermoregulating membranes, thermal conductive membranes and finally protective membranes are investigated. The essential functions associated to different categories of the investigated membranes along with the relationships between membrane structure and properties are presented.

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Optimization of the fabrication of amidoxime modified PIM-1 electrospun fibres for use as breathable and reactive materials

Cited by 18 publications

References 51 publications

Control Over the Morphology of Electrospun Microfibrous Mats of a Polymer of Intrinsic Microporosity

Control Over the Morphology of Electrospun Microfibrous Mats of a Polymer of Intrinsic Microporosity

Tailoring the Surface Properties of Micro/Nanofibers Using 0D, 1D, 2D, and 3D Nanostructures: A Review on Post‐Modification Methods

A review on emerging developments in thermal and moisture management by membrane‐based clothing systems towards personal comfort

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