β–Cyclodextrin Composite Membranes

Jul 11, 2018 - The composite ENMs were found to be non-toxic to human lung cells, suggesting that it is a good candidate for respiratory filter media ...
0 downloads 0 Views 4MB Size
Subscriber access provided by UNIV OF DURHAM

Article

Electrospun Polyacrylonitrile/#–Cyclodextrin Composite Membranes for Simultaneous Air Filtration and Adsorption of Volatile Organic Compounds Vinod Kadam, Yen B. Truong, Christopher D. Easton, Shayanti Mukherjee, Lijing Wang, Rajiv Padhye, and Ilias Louis Kyratzis ACS Appl. Nano Mater., Just Accepted Manuscript • DOI: 10.1021/acsanm.8b01056 • Publication Date (Web): 11 Jul 2018 Downloaded from http://pubs.acs.org on July 17, 2018

Just Accepted “Just Accepted” manuscripts have been peer-reviewed and accepted for publication. They are posted online prior to technical editing, formatting for publication and author proofing. The American Chemical Society provides “Just Accepted” as a service to the research community to expedite the dissemination of scientific material as soon as possible after acceptance. “Just Accepted” manuscripts appear in full in PDF format accompanied by an HTML abstract. “Just Accepted” manuscripts have been fully peer reviewed, but should not be considered the official version of record. They are citable by the Digital Object Identifier (DOI®). “Just Accepted” is an optional service offered to authors. Therefore, the “Just Accepted” Web site may not include all articles that will be published in the journal. After a manuscript is technically edited and formatted, it will be removed from the “Just Accepted” Web site and published as an ASAP article. Note that technical editing may introduce minor changes to the manuscript text and/or graphics which could affect content, and all legal disclaimers and ethical guidelines that apply to the journal pertain. ACS cannot be held responsible for errors or consequences arising from the use of information contained in these “Just Accepted” manuscripts.

is published by the American Chemical Society. 1155 Sixteenth Street N.W., Washington, DC 20036 Published by American Chemical Society. Copyright © American Chemical Society. However, no copyright claim is made to original U.S. Government works, or works produced by employees of any Commonwealth realm Crown government in the course of their duties.

Page 1 of 41 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

ACS Applied Nano Materials

Electrospun Polyacrylonitrile/β–Cyclodextrin Composite Membranes for Simultaneous Air Filtration and Adsorption of Volatile Organic Compounds Vinod Kadam1, 2, Yen Bach Truong*2, Christopher Easton2, Shayanti Mukherjee 3, Lijing Wang1, Rajiv Padhye1, Ilias Louis Kyratzis2 1

School of Fashion and Textiles, RMIT University, Brunswick, VIC, 3056, Australia 2

3

CSIRO-Manufacturing, Clayton, VIC, 3168, Australia

The Ritchie Centre, Hudson Institute of Medical Research, VIC, 3168, Australia

Abstract

Simultaneous capture of different air pollutants including aerosols and volatile organic compound (VOC) is demonstrated using composite polyacrylonitrile (PAN)/β–cyclodextrin (β– CD) nanofiber membrane. Aerosol filtration along with VOCs adsorption in one step remains a challenge due to differences in the physical and chemical properties of these air pollutants. PAN/β–CD composite electrospun nanofiber membranes (ENMs) were produced with different concentrations of β–CD. The surface modification of the composite ENM was confirmed by X-

ACS Paragon Plus Environment

1

ACS Applied Nano Materials 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60

Page 2 of 41

ray photoelectron spectroscopy (XPS), field emission–scanning electron microscopy (FE–SEM) and water contact angles. PAN/β–CD composite ENMs showed excellent air filtration performance (>95% filtration efficiency with a relatively low pressure drop of 112 Pa). Formaldehyde (HCHO) adsorption was determined using a simple jar method and xylene adsorption by UV spectroscopy. HCHO and xylene adsorption found better by 66% and 73% respectively compared to pristine PAN ENM despite a reduction in fiber surface area. The composite ENMs were found to be non-toxic to human lung cell line, suggesting that it is a good candidate for respiratory filter media for simultaneous air filtration and VOC adsorption.

Keywords: electrospinning, composite nanofibers, air filtration, formaldehyde adsorption, cytotoxicity, multifunctional respiratory filtration

Introduction The ubiquitous presence of air pollutants (outdoor and indoor) is a threat to human health.1-2 Air pollutants are a contributing factor to health issues ranging from skin irritation, hypertension, respiratory and cardiovascular diseases to cancer and death.3-5 The severity depends on the exposure level and type of air pollutant. Air pollutants are either solid/liquid aerosols or gas molecules which include volatile organic compounds (VOCs).6 Aerosols, also known as particulate matter (PM), have been further classified, based on the inhalable particle size, as PM 10 (2.5–10 µm), PM 2.5 (0.1–2.5 µm) and PM 0.1 (