Issue 43, 2019, Issue in Progress

Continuous production of lignin nanoparticles using a microchannel reactor and its application in UV-shielding films

Abstract

With the severe energy and environmental issues, lignin has received increasing attention as a renewable biomass feedstock. The development of lignin-based nanoparticles provides a new route to the valorization of lignin. In this work, we propose a simple continuous method to prepare lignin nanoparticles (LNS) using a microchannel reactor. Polyvinylpyrrolidone (PVP)/sodium dodecyl sulfate (SDS) were selected as stabilizers. Spherical-like lignin nanoparticles with an average size of 13 nm were obtained in a T-shaped microchannel reactor. The effects of solvent species, PVP/SDS mass ratio, and lignin solution flow rate on the size of LNS were investigated. The as-prepared LNS had a good stability during 60 days-storage and were used as an additive to form UV-shielding composite films with poly(vinyl alcohol) (PVA). Compared with raw lignin, the addition of LNS could enhance the UV-shielding efficacy by 13.3% in the ultraviolet spectrum (250 nm). The present work suggests that the microchannel reactor is a promising continuous approach to prepare LNS with versatile applications.

Graphical abstract: Continuous production of lignin nanoparticles using a microchannel reactor and its application in UV-shielding films

Article information

Article type
Paper
Submitted
04 Jul 2019
Accepted
02 Aug 2019
First published
12 Aug 2019
This article is Open Access
Creative Commons BY-NC license

RSC Adv., 2019,9, 24915-24921

Continuous production of lignin nanoparticles using a microchannel reactor and its application in UV-shielding films

T. Ju, Z. Zhang, Y. Li, X. Miao and J. Ji, RSC Adv., 2019, 9, 24915 DOI: 10.1039/C9RA05064G

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