Synthesis and characterization of polyester bionanocomposite membrane with ultrasonic irradiation process for gas permeation and antibacterial activity
•Optically active bionanocomposite membranes prepared with simple, green and inexpensive ultrasonic irradiation process.•Cellulose/silica is used for enhancing strength and thermal resistance of PE membranes.•The adding cellulose/silica to the PE membrane structure increased the permeability of the...
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| Published in: | Ultrasonics sonochemistry Vol. 41; pp. 538 - 550 |
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| Main Authors: | , , , , |
| Format: | Journal Article |
| Language: | English |
| Published: |
Netherlands
Elsevier B.V
01-03-2018
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| Subjects: | |
| Online Access: | Get full text |
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| Summary: | •Optically active bionanocomposite membranes prepared with simple, green and inexpensive ultrasonic irradiation process.•Cellulose/silica is used for enhancing strength and thermal resistance of PE membranes.•The adding cellulose/silica to the PE membrane structure increased the permeability of the membranes.•TGA studies revealed improved thermal stability of membranes with silica/cellulose.•Optically active bionanocomposite membranes exhibited excellent antibacterial activities against E. coli and S. aureus.
Optically active bionanocomposite membranes composed of polyester (PE) and cellulose/silica bionanocomposite (BNCs) prepared with simple, green and inexpensive ultrasonic irradiation process. It is a novel method to enhance the gas separation performance. The novel optically active diol containing functional trifluoromethyl groups was prepared in four steps reaction and it was fully characterized by different techniques. Commercially available silica nanoparticles were modified with biodegradable nanocellulose through ultrasonic irradiation technique. Transmission electron microscopy (TEM) analyses showed that the cellulose/silica composites were well dispersed in the polymer matrix on a nanometer scale. The mechanical properties nanocomposite films were improved by the addition of cellulose/silica. Thermo gravimetric analysis (TGA) data indicated an increase thermal stability of the PE/BNCs in compared to the pure polymer. The results obtained from gas permeation experiments showed that adding cellulose/silica to the PE membrane structure increased the permeability of the membranes. The increase in the permeability of the gases was as follows: PCH4 (38%) <PN2 (58%) <PCO2 (88%) <PO2 (98%) Adding silica nanoparticles into the PE matrix, improved the separation performance of carbon dioxide/methane and carbon dioxide/nitrogen gases. Increasing the cellulose/silica mass fraction in the membrane increased the diffusion coefficients of gases considered in the current study. Further, antimicrobial test against pathogenic bacteria was carried out. |
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| Bibliography: | ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
| ISSN: | 1350-4177 1873-2828 |
| DOI: | 10.1016/j.ultsonch.2017.10.020 |