High-Throughput Synthesis of Lignin Particles (∼30 nm to ∼2 μm) via Aerosol Flow Reactor: Size Fractionation and Utilization in Pickering Emulsions

• DOI: 10.1021/acsami.6b07900
• Publication Date: 2016-08-18T19:59:44Z
• Authors: Mariko Ago; Siqi Huan; Maryam Borghei; Janne Raula; Esko I. Kauppinen; Orlando J. Rojas
• Keywords: Pickering emulsion; Ostwald ripening; Coalescence (physics); Nanocellulose

An aerosol flow reactor was used for the first time high-throughput, high yield synthesis of spherical lignin particles with given inherent hydrophilicity, depending on precursor biomolecule. In situ fractionation via Berner type impactor afforded populations characteristic sizes ranging from ∼30 nm to 2 μm. The as-produced, dry displayed excellent mechanical integrity, even after redispersion under shear in either mineral oil or water. They were effective stabilization oil-in-water (O/W) Pickering emulsions tunable droplet size, dimension emulsification. emulsion stability correlated particle concentration as well respective type. For O/W stabilized more hydrophilic particles, negligible changes phase separation Ostwald ripening and coalescence observed over a period than two months. Together fact that concentrations emulsification low 0.1%, our results reveal remarkable ability endow emulsified systems colloidal stability. Overall, we offer new, high-yield, scalable nanomanufacturing approach producing size control production capacity. A number emerging applications these organic can be envisioned and, proof-of-concept, illustrate here surfactant-free