Preparation of mechanically strong poly (ether block amide)/Mercaptoethanol breathable membranes for biomedical applications

Sole, Bhausaheb B.; Lohkna, Sarika; Chhabra, Pranshu; Prakash, V.; Seshadri, Geetha; Tyagi, A. K.

doi:10.1007/s10965-018-1596-1

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…In this figure, two different melting peaks can be observed corresponding to the soft (PEO) and the hard (PA6) segments. The melting temperature of both segments was around 14°C for the PEO and 204°C for the PA, being in coherence with those reported previously in the literature [17]. The slight decrease in the melting temperature of both segments suggests that the crystallinity of samples becomes lower as the PEBA concentration in the casting solution increases.…”

Section: Membrane Characterizationsupporting

confidence: 91%

Poly(ether- block -amide) copolymer membrane for CO ₂ /N ₂ separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance

et al. 2019

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The present work is focused on the study of the effect that the casting solution concentration has on the morphology and gas separation performance of poly(ether- block -amide) copolymer membranes (Pebax ® MH 1657). With this aim, three different concentrations of Pebax ® MH 1657 in the casting solution (1, 3 and 5 wt%) were used to prepare dense membranes with a thickness of 40 µm. The morphology and thermal stability of all membranes were characterized by scanning electron microscopy, X-ray diffraction, differential scanning calorimetry, rotational viscometry and thermogravimetric analyses. An increase in crystallinity was notable when the amount of solvent in the Pebax ® MH 1657 solution was higher, mainly related to the polymer chains arrangement and the solvent evaporation time. Such characteristic seemed to play a key role in the thermal degradation of the membranes, confirming that the most crystalline materials tend to be thermally more stable than those with lower crystallinity. To study the influence of their morphology and operating temperature on the CO 2 separation, gas separation tests were conducted with the gas mixture CO 2 /N 2 . Results indicated that a compromise must be found between the amount of solvent used to prepare the membranes and the crystallinity, in order to reach the best gas separation performance. In this study, the best performance was achieved with the membrane prepared from a 3 wt% casting solution, reaching at 35°C and under a feed pressure of 3 bar, a CO 2 permeability of 110 Barrer and a CO 2 /N 2 selectivity of 36.

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Section: Membrane Characterizationsupporting

confidence: 91%

Poly(ether- block -amide) copolymer membrane for CO ₂ /N ₂ separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance

et al. 2019

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“…Sole et al produced breathable membranes by blending Pebax MH 1657 with different organic molecules [60][61][62]. Dense films were prepared via the solution casting method.…”

Section: Biomedical Applicationsmentioning

confidence: 99%

Polyether Block Amide as Host Matrix for Nanocomposite Membranes Applied to Different Sensitive Fields

Clarizia

Bernardo

2022

Membranes

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The cornerstones of sustainable development require the treatment of wastes or contaminated streams allowing the separation and recycling of useful substances by a more rational use of energy sources. Separation technologies play a prominent role, especially when conducted by inherently environmentally friendly systems such as membrane operations. However, high-performance materials are more and more needed to improve the separative performance of polymeric materials nanocomposites are ideally suited to develop advanced membranes by combining organic polymers with suitable fillers having superior properties. In this area, polyether block amide copolymers (Pebax) are increasingly adopted as host matrices due to their distinctive properties in terms of being lightweight and easy to process, having good resistance to most chemicals, flexibility and high strength. In this light, the present review seeks to provide a comprehensive examination of the progress in the development of Pebax-based nanocomposite films for their application in several sensitive fields, that are challenging and at the same time attractive, including olefin/paraffin separation, pervaporation, water treatment, flexible films for electronics, electromagnetic shielding, antimicrobial surfaces, wound dressing and self-venting packaging. It covers a wide range of materials used as fillers and analyzes the properties of the derived nanocomposites and their performance. The general principles from the choice of the material to the approaches for the heterogeneous phase compatibilization as well as for the performance improvement were also surveyed. From a detailed analysis of the current studies, the most effective strategies to overcome some intrinsic limitations of these nanocomposites are highlighted, providing guidelines for the correlated research.

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“…They are medically relevant polymers commonly adopted to fabricate catheters and medical tubings due to their good kink and chemical resistance. They have been explored for a range of biomedical applications [23] as in the production of breathable films [24], or antimicrobial surfaces incorporating photosensitizers [25]. Being rubbery, Pebax can provide flexible films without requiring harmful plasticizers as typically done with polyvinyl chloride (PVC) which is widely used for medical devices [26,27].…”

Section: Graphical Abstract Introductionmentioning

confidence: 99%

A novel material based on an antibacterial choline-calixarene nanoassembly embedded in thin films

et al. 2022

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Supramolecular chemistry is one of the current strategies for producing advanced materials. With the aim to develop new Thin-Films with antibacterial activity, we embedded an amphiphilic choline-calix[4]arene possessing antibacterial properties in polymeric Thin-Films based on polyether-co-amide matrix (Pebax®2533). The loading of the calix[4]arene derivative in the film was performed by solution casting. The amount of calixarene additive in the films was in the range of 0.5–5 wt%. The self-supported Thin-Films were characterized by investigating phase miscibility, morphology, spectral properties, and gas transport. The release of the calixarene derivative from the films was studied in a biomimetic medium as PBS (10 mM, pH 7.4). The presence of the additive did not affect the thermal stability of the copolymer, whereas it induced an increase in crystallinity, wettability, and gas permeability of the blend films according to its concentration. The antibacterial activity of the films was evaluated in vitro against Escherichia coli and Staphylococcus aureus strains, representative of Gram-negative and Gram-positive bacteria. The developed films displayed antibacterial activity against both strains. In particular, Pebax® − 5 wt% Chol-Calix caused within 10 h a reduction in E. coli and S. aureus of 2.57 and 2 log CFU/mL, respectively. The potential toxicity of the films was also tested on mouse embryonic fibroblasts NIH/3T3. Pebax®2533/calixarene derivative combination appears a promising approach for the development of novel flexible antibacterial materials. Graphical abstract

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Preparation of mechanically strong poly (ether block amide)/Mercaptoethanol breathable membranes for biomedical applications

Cited by 10 publications

References 22 publications

Poly(ether- block -amide) copolymer membrane for CO ₂ /N ₂ separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance

Poly(ether- block -amide) copolymer membrane for CO ₂ /N ₂ separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance

Polyether Block Amide as Host Matrix for Nanocomposite Membranes Applied to Different Sensitive Fields

A novel material based on an antibacterial choline-calixarene nanoassembly embedded in thin films

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Preparation of mechanically strong poly (ether block amide)/Mercaptoethanol breathable membranes for biomedical applications

Cited by 10 publications

References 22 publications

Poly(ether- block -amide) copolymer membrane for CO 2 /N 2 separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance

Poly(ether- block -amide) copolymer membrane for CO 2 /N 2 separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance

Polyether Block Amide as Host Matrix for Nanocomposite Membranes Applied to Different Sensitive Fields

A novel material based on an antibacterial choline-calixarene nanoassembly embedded in thin films

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Product

Resources

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Poly(ether- block -amide) copolymer membrane for CO ₂ /N ₂ separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance

Poly(ether- block -amide) copolymer membrane for CO ₂ /N ₂ separation: the influence of the casting solution concentration on its morphology, thermal properties and gas separation performance