Dr. Chung Hee Park
Dr. Chung Hee Park(Ph.D.-polymer sci.), now is a professor of Textiles, Merchandising and Fashion Design at Seoul National University(SNU). She got her B Sc and M Sc in clothing & textiles from SNU, and Ph.D. in polymer Science from Univ. of Mass. at Lowell, USA. And Dr. Chung Hee Park got the Prime Minister Award in 2013, the Most excellent academic award from Dongil Fabric Co. in 2016, an Aaward for Outstanding Scholar in Fashion and Fibers from TIN news in 2016, an Excellent Research Award from SNU in 2018. Dr. Chung Hee Park’s researches focus on the development of self-cleaning/superhydrophobic textiles and sustainability in Fashion textiles. She was the president of the Korean Society of Clothing & Textiles, Editor-in-chief of the Journal of the Korean Society of Clothing & Textiles, and Dean of the college of Human Ecology at SNU.
A roadmap to develop human/environment friendly self-cleaning textiles
Superhydrophobic technologies have been developed by focusing on industrial materials and with little consideration for clothing materials. In addition, the methods using nanoparticles or perfluorinated compounds have numerous problems such as surface color change, decrease of breathability and handle, and environmental and health problems.
In our studies, human-friendly self-cleaning superhydrophobic textiles with improved water vapor permeability were produced on several common fabrics via top-down type nanostructuring techniques. By applying the plasma or alkaline treatment and following hydrophobic coatings, nanostructured superhydrophobic lyocell, silk, and polyester fabrics having asymmetric wettability as well as the static contact angles of greater than 150° and the shedding angles of less than 5° were fabricated. In addition, employing disperse dyeing process, we fabricated colorful fluorine-free superhydrophobic polyester fabric via controlling the thermal conditions of conventional disperse dyeing process. As nano-craters were formed on the fiber surfaces, static contact angles increased, and shedding angles tended to decrease by minimizing the contact area of water with fiber surface. The specimen treated with alkaline hydrolysis and thermal treatment during disperse dyeing process showed the highest static contact angle of 167.8±1.3˚ and lowest shedding angle of 4.4±2.3˚. The newly developed superhydrophobic fabrics were found to have higher water vapor and air permeability than those of the untreated samples. Furthermore, by changing fabric materials recently, more facile and energy-efficient process for fabricating self-cleaning textiles is being developed.
Self-cleaning, Superhydrophobic, Human friendly, Environment friendly