Silanized modified cellulose: Preparation and evaluation of O/W

Abstract Cellulose nanofibrils (CNFs) are ideal Pickering emulsion stabilizers, but they have limitations due to their strong hydrophilicity. In this work, modified CNFs (M-CNFs) with a water contact angle of 93.1±0.6° were successfully prepared by methyl trimethoxysilane. Subsequently, the performance of the M-CNFs was characterized by crystallization performance determination (XRD), Fourier transform infrared spectra (FTIR), particle size determination, thermogravimetric analysis and so on. As well as, the O/W Pickering emulsions prepared with M-CNFs as a stabilizer has good performance in the diameter and particle size distribution, most droplet sizes can be maintained within 5μm, and unimodal distribution was presented. It can show more stable performance under medium and alkaline conditions (pH=7-11), and has certain anti-ion ability. Thus, this study has potential applications in coating, paint, sewage treatment and other fields.