Effect of sepiolite clay on reinforcement and chemical performance of NR latex films

Abstract

Natural rubber (NR) latex is extensively used in dipped products such as gloves due to its high elasticity and flexibility. However, its low resistance to chemicals and moderate mechanical properties restrict its wider use [1]. Traditional fillers such as silica improve properties but are costly and less sustainable [2]. Sepiolite clay, a naturally occurring fibrous magnesium silicate, provides high surface area and active silanol groups that can enhance filler–matrix interactions [3]. This study investigates the potential of sepiolite clay to reinforce NR latex films and improve chemical resistance, targeting optimized formulations for protective glove applications. This study aims to investigate how sepiolite clay reinforces natural rubber gloves and how its concentration affects their chemical performance. Gloves will be formulated with varying sepiolite loadings using a newly developed incorporation method. The reinforcing effect, mechanical strength, and chemical resistance will be evaluated to identify the optimal sepiolite loading.