Characterization of needle-punched nonwoven fabrics for industrial air filter application

Thangadurai, K.; Thilagavathi, G.; Bhattacharyya, Amitava

doi:10.1080/00405000.2014.895089

Cited by 33 publications

(20 citation statements)

References 5 publications

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“…This involves wet-laid [29] and melt-blown [30] web forming processes bonded with mechanical methods as needle punching, chemical or thermal bonding [31][32][33][34]. Nonwoven polyester textiles are strong, permeable, resistant to stretching heating, shrinking, abrasion, mildew and most chemicals, which enabled it to be used in applications such as filtering, geotextiles, thermal insulation, disposable hygiene products as surgical gowns, diapers and in many othe areas [35][36][37][38][39][40]. Moreover, the thermal, mechanical and optical properties made graphene a choice of material to be used for wide variety of applications [41][42][43][44][45][46].…”

Section: Introductionmentioning

confidence: 99%

Fabrication of a graphene coated nonwoven textile for industrial applications

et al. 2016

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A cost effective electrically conductive textile for large scale applications would revolutionise numerous industries. Herein, we demonstrate a novel processing approach to produce conductive textiles for industrial applications. A conductive nonwoven textile was successfully fabricated using a simple dip coating method. The nonwoven polyester was coated with liquid crystallite graphene oxide with subsequent non-toxic chemical reduction. The process is readily scalable. The graphene coated fabric has been characterized by electron microscopy as well as by electrical, mechanical, thermal and abrasion resistance measurements. It was found that the electrical surface resistivity of the prepared polyester-graphene composite fabric was 330 Ω □-1. The electrical surface resistivity was 3 and 150 times lower than that of polypyrrole coated woven polyester fabric and graphene coated nonwoven fabrics, respectively, in previously published reports. The hybrid polyester-graphene textile prepared here should find applications in high-performance geotextiles or as heating elements. Fabrication of Graphene Coated Nonwoven Textile for Industrial ApplicationsDharshika Kongahge, Javad Foroughi * , Sanjeev Gambhir, Geoffrey M. Spinks, Gordon G. Wallace A cost effective electrically conductive textile for large scale applications will revolutionise many industries. Herein, we demonstrate a novel processing approach to produce conductive textiles for industrial applications. The conductive nonwoven textile was successfully fabricated using a simple dip coating method. The polyester nonwoven was coated with liquid crystallite graphene oxide with subsequent non-toxic chemical reduction. The process is readily scalable. The graphene coated fabric has been characterized by electron microscopy as well as electrical, mechanical, thermal and abrasion resistance measurements. It was found that the electrical surface resistivity of the prepared polyester-graphene composite fabric was 330 Ω/□. The electrical surface resistivity was 3 and 150 times lower than that of polypyrrole coated woven polyester fabric and graphene coated nonwoven fabrics which were published previously. The hybrid polyestergraphene textile prepared here should find application as high-performance geotextiles or as heating elements.

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Section: Introductionmentioning

confidence: 99%

Fabrication of a graphene coated nonwoven textile for industrial applications

et al. 2016

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“…PM filtration is mostly characterised in terms of filtration efficiency, penetration pressure drop and quality factor [34]. These terms are expressed using equations (1) to (4), respectively [35,36] and can be determined using principle setup shown in Figure 2. Air filtration can also be characterised in terms of filter resistance [27], minimum efficiency reporting value (MERV) and most penetrating particle size (MPPS) [16].…”

Section: Filter For Air Pollutantsmentioning

confidence: 99%

“…The pressure drop for respirator filters should be less than 147 Pa [39] which can be difficult to achieve with high efficiency filter media. The filtration efficiency is desired while the simultaneous pressure drop is unfavourable, and hence the benefit to cost ratio is judged by the term quality factor or figure of merit [34,36]. Recently, the term specific filtration efficiency is coined, where filtration efficiency is normalised to basis weight of the filter media [40].…”

Section: Filter For Air Pollutantsmentioning

confidence: 99%

Electrospun nanofibre materials to filter air pollutants – A review

Kadam

Wang

Padhye

2016

Journal of Industrial Textiles

154

110

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This review presents an overview of electrospun nanomembranes produced from various polymers to filter air pollutants. Air pollutants can be categorised as particulate matter and gaseous pollutants. Both differ from each other in terms of size and chemical composition. Hence, the filter characterisation techniques and capture mechanism also vary. Particulate matter can be effectively captured in nanomembranes, in relation to microfibres, due to its small fibre diameter, small pore size and high specific surface area. Recently, electrospun nanomembranes have been used to filter gaseous pollutants owing to their potential of active surface modification. Different additives which functionalised the nanofibre surface for gaseous pollutant adsorption are also highlighted in this review. The characteristic features of nanofibres influencing the filtration efficiency have been discussed. Furthermore, various research challenges and future trends of electrospun nanomembranes in air filtration have been discussed.

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“…Nowadays, the fibrous filters have been widely used for PM2.5 filtration due to their fascinating features, such as relatively energy‐efficiency, cost‐effectiveness, and ease of scalable fabrication . The typical fibrous filters include needle‐punched filters, spunbond filters, melt blown filters, and electrospun filters . Among them, fibers from needle‐punched filters and spunbond filters possess a large diameter (~10 μm), making them suitable to be used as coarse filters.…”

Section: Introductionmentioning

confidence: 99%

Design of three‐dimensional gradient nonwoven composites with robust dust holding capacity for air filtration

Zhang

Liu

Zhang

et al. 2019

J of Applied Polymer Sci

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Air pollution has seriously threatened public health in developing countries. However, it is still a big challenge for fabricating a filter with high filtration efficiency, low air resistance, and long service life. Herein, we report a facile strategy to fabricate a multilayered nonwoven composite with a functionally gradient structure for air filtration by a combined method of needle‐punch, melt blown, and corona charging techniques. Our integrated multilayer needle‐punched/melt blown composite filter could achieve a high filtration efficiency up to 99.52 ± 0.01%, a low pressure drop of 136.87 ± 0.49 Pa, and a satisfied quality factor of 0.03898 ± 0.0001 Pa−1 for sodium chloride particles with an aerodynamic diameter of 0.26 μm at the airflow rate of 85 L min−1. More importantly, the resultant filter exhibited a large dust holding capacity of 23.5 ± 0.41 g m−2, which indicates a long service life. It is expected that our multilayer needle‐punched/melt blown composite fabric may not only serve as a good candidate for air filtration, but also provide a new sight for designing the air filtration materials. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 47827.

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Characterization of needle-punched nonwoven fabrics for industrial air filter application

Cited by 33 publications

References 5 publications

Fabrication of a graphene coated nonwoven textile for industrial applications

Fabrication of a graphene coated nonwoven textile for industrial applications

Electrospun nanofibre materials to filter air pollutants – A review

Design of three‐dimensional gradient nonwoven composites with robust dust holding capacity for air filtration

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