Eunkyoung Shim

Publications

Hollowness Variation with Die Wall Thickness in Melt-Spinning of Polypropylene Hollow Fibers

Ruckdashel, R., & Shim, E. (2022, April 11), FIBERS AND POLYMERS, Vol. 4. https://doi.org/10.1007/s12221-022-4498-0

Synthesizing heat transfer factors on thermal bonding structure of mineral added polypropylene spun-bond

Wei, W., Shim, E., Song, Y., & Pourdeyhimi, B. (2022, January 10), JOURNAL OF APPLIED POLYMER SCIENCE, Vol. 139, p. 52138. https://doi.org/10.1002/app.52138

Experimental Investigation of the Fiber Formation Process and Web Structures Using an Annular Meltblowing Spinneret

Barilovits, S., Khan, S. A., & Shim, E. (2021), INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH, 9. https://doi.org/10.1021/acs.iecr.1c01080

Fabrication of Poly(lactic acid) filter media via the meltblowing process and their filtration performances: A comparative study with polypropylene meltblown

Jafari, M., Shim, E., & Joijode, A. (2021), SEPARATION AND PURIFICATION TECHNOLOGY, 260. https://doi.org/10.1016/j.seppur.2020.118185

Modeling the Triboelectric Behaviors of Elastomeric Nonwoven Fabrics

Wang, Y., Shim, E., He, N., Pourdeyhimi, B., & Gao, W. (2021, November 8), ADVANCED MATERIALS, Vol. 11, p. 2106429. https://doi.org/10.1002/adma.202106429

Process‐structure‐property relationship of meltblown poly ( styrene–ethylene / butylene–styrene ) nonwovens

Yu, Y., & Shim, E. (2021), Journal of Applied Polymer Science, 138(16), 50230. https://doi.org/10.1002/app.50230

Structure characterization of the clogging process of coarse fibrous filter media during solid particle loading with X-ray micro-computed tomography

Song, Y., & Shim, E. (2021), SEPARATION AND PURIFICATION TECHNOLOGY, 10. https://doi.org/10.1016/j.seppur.2021.118980

Structure-property relationship of melt spinning polypropylene fibers containing inorganic particulate CaCO3 fillers

Wei, W., Shim, E., Barnes, W., & Pourdeyhimi, B. (2021). [Review of , ]. TEXTILE RESEARCH JOURNAL. https://doi.org/10.1177/0040517520982001

A Study of Skin Physiology, Sensation and Friction of Nonwoven Fabrics Used in Absorbent Hygiene Products in Neutral and Warm Environments

Yin, L., Shim, E., & DenHartog, E. (2020), Biotribology, 24, 100149. https://doi.org/10.1016/j.biotri.2020.100149

Effects of melt spinning parameters on polypropylene hollow fiber formation

Ruckdashel, R., & Shim, E. (2020), Journal of Engineered Fibers and Fabrics, 15, 155892501989968. https://doi.org/10.1177/1558925019899680

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Grants

Development and Implementation of Geotextile Filters to Reduce Nutrient and Microbial Loading in Stormwater Runoff

Wake Forest University(7/01/21 - 6/30/22)

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Development and Implementation of Geotextile Filters to Reduce Nutrient and Microbial Loading in Stormwater Runoff

Sponsor: Wake Forest University

Start Date: 7/01/21

End Date: 6/30/22

Abstract

Algal blooms in North Carolina occur annually due to eutrophication – excess of nutrients in surface water that causes dense growth of plant life. This is an environmental and public health concern, as the algae produced during bloom events both negatively impacts the aquatic life relying on water as the natural habitat and presents treatment challenges to utilities relying on surface water to provide safe-clean drinking water to their communities. Interventions to prevent eutrophication include reducing the amount of nutrients in receiving bodies of water (e.g. reducing the quantity of fertilizers on agricultural lands), planting adsorptive vegetation along streambeds of water bodies, and enforcing policies that regulate nutrient loading in the environment. Within this context, stormwater and its nutrient rich-microbially dense runoff, is a naturally occurring source of pollution; it exists as a pathway (point and non-point source) to introduce eutrophication-causing nutrients and microbial communities into receiving bodies of water. By reducing and/or eliminating the contaminants in stormwater runoff, receiving bodies of water are less likely to develop harmful algal blooms. The goal of the proposed study is to develop nonwoven based hybrid filters for microbe and nutrients capture in water, to absolve stormwater runoff as a contributor to eutrophication. A secondary goal of this project is to implement the developed nonwoven filter along creeks and streams in the Yadkin River Basin to determine the feasibility and efficacy of the design for stormwater runoff treatment.

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Effects of Polymer Rheology on Meltblowing Fiber Formation Process and Fiber Diameter Distribution

NCSU Nonwovens Institute(8/16/19 - 8/15/22)

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Effects of Polymer Rheology on Meltblowing Fiber Formation Process and Fiber Diameter Distribution

Sponsor: NCSU Nonwovens Institute

Start Date: 8/16/19

End Date: 8/15/22

Abstract

Confidential

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Stretchable Electronics for Sensing and Energy Storage

COT Research Opportunity Seed Fund (ROSF)(1/03/17 - 6/30/17)

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Stretchable Electronics for Sensing and Energy Storage

Sponsor: COT Research Opportunity Seed Fund (ROSF)

Start Date: 1/03/17

End Date: 6/30/17

Abstract

The overarching goal of this project is to get preliminary data for a collaborative research project on stretchable electronics between two PIs (Dr. Gao and Dr. Shim) in the TECS department, and use the preliminary results to target external funding.

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3D Analysis of Filter Media Structures and their Impacts on Filtration Behaviors

NCSU Faculty Research & Professional Development Fund(7/01/16 - 6/30/17)

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3D Analysis of Filter Media Structures and their Impacts on Filtration Behaviors

Sponsor: NCSU Faculty Research & Professional Development Fund

Start Date: 7/01/16

End Date: 6/30/17

Abstract

An ideal filter media should exhibit high filtration efficiency at low pressure drop and have long filter life (i.e. high dust holding capacity). Challenges in the filter media engineering is to achieve these three contradicting goals. Then, controlling and engineering various aspects of filter media structures poses critical importance to achieve high filtration performance. Therefore, understanding of 3D structure of filter media and changes in these structures during the filter use is essential to engineer ideal filter media. In this proposed research I aim to analyze 2D & 3D structures of filter media and evaluate their impacts on filtration properties. X-ray micro computed tomography (micro-CT) will be used to visualize inner structure of filter media and imaging analysis technique will be developed to quantify 3Dstructural characteristics of filter media. Then, the role of filter structures in filtration properties will be investigated. In particular, I am interested in the loading of the particle during the filter use and impacts of filter structures on filtration properties during the particle loading.

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High Performance Nonwovens For Healthcare Packaging

Bemis Company, Inc. (9/15/14 - 11/15/15)

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High Performance Nonwovens For Healthcare Packaging

Sponsor: Bemis Company, Inc.

Start Date: 9/15/14

End Date: 11/15/15

Abstract

CONFIDENTIAL: The aim of this proposal is to investigate nonwoven technologies to address both near term and long-term developments of a new generation of high strength nonwoven fabrics as the base fabrics for use in applications of interest in the field of healthcare packaging.

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Measurement of Fiber Dispersion in Aqueous Media

Schlumberger Technology Corporation (subsidiary of Schlumberger Limited)(11/01/13 - 9/30/14)

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Measurement of Fiber Dispersion in Aqueous Media

Sponsor: Schlumberger Technology Corporation (subsidiary of Schlumberger Limited)

Start Date: 11/01/13

End Date: 9/30/14

Abstract

The goal of this proposed research is to develop techniques to evaluate the degree of entanglement/dispersion of short-cut fibers dispersed in the aqueous media. More specifically, we purpose to develop image analysis technique to qualitatively and quantitatively evaluate fiber dispersion and entanglement in the aqueous media. This will include establishing a protocol of sample collections, optimization of image capture conditions and development of proper image analysis algorithms as schematically shown in Figure 1. We plan to create a set of fiber/media dispersions with different degree of dispersion and entanglement by adjusting fiber length/diameter ratio, fiber concentration and dispersion time to use as a reference set. The purpose of this is to check effectiveness and applicability of technique to be developed through procedure. Fiber samples will be collected from this reference set and dispersion defect will be visualized (Task 1). The result of task 1 would be used to qualitatively evaluate the degree of fiber entanglement. In next step, we pursue to develop image analysis technique to provide further information and more quantitative analysis. Two different methodology would be used – separation/detection of fiber bundles (Task 2) and application of uniformity analysis (Task 3). In the end of the project period, fiber/particle mixture may be introduced to see feasibility of fiber/particle dispersion analysis using the proposed the scheme.

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Review of Charging Technology

Taiwan Textile Research Institute(1/01/13 - 12/12/13)

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Review of Charging Technology

Sponsor: Taiwan Textile Research Institute

Start Date: 1/01/13

End Date: 12/12/13

Abstract

The objective of this proposed study is ?h To review current charging technology for aerosol filtration applications. ?h To develop a die-head for meltblown process to make an electrical charged web.

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