Fabrication of Partially Etched Polystyrene Nanoparticles

Author:

Jung In Hwan1,Lee Jieun1ORCID,Shin Seung Soo1,Kang Youn-Jung2,Seo Tae Seok1,Park Bum Jun1ORCID

Affiliation:

1. Department of Chemical Engineering (BK21 FOUR Integrated Engineering Program), Kyung Hee University, Yongin 17104, Gyeonggi-do, Republic of Korea

2. Department of Biochemistry, Research Institute for Basic Medical Science, School of Medicine, CHA University, Seongnam-si 13496, Gyeonggi-do, Republic of Korea

Abstract

Non-spherical polymer nanoparticles (NPs) have gained attention in various fields, but their fabrication remains challenging. In this study, we present a simple protocol for synthesizing partially etched polystyrene (PS) nanoparticles through emulsion polymerization and chemical etching. By adjusting the degree of crosslinking, we selectively dissolve the weakly crosslinked portions of the particles, resulting in partially etched PS NPs with increased surface area. These partially etched NPs are evaluated for their use as solid surfactants in Pickering emulsions, where they demonstrate significantly improved emulsion stability compared to intact spherical NPs. Our results contribute to the field of nanoparticle shape control and provide insights into developing novel materials for various applications, particularly in the area of solid surfactant usage. Additionally, the importance of conducting cellular toxicity studies using these partially etched NPs for future work is also emphasized.

Funder

National Research Foundation (NRF) of Korea

Korea Health Industry Development Institute

Korea Institute for Advancement of Technology

Publisher

MDPI AG

Subject

Polymers and Plastics,General Chemistry

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