Facilitated by worldwide efforts to further valorize bio-based materials, lignin surface and colloidal behaviors have become subjects of numerous research efforts, which have consequently shed light on their physicochemical properties and drastically expanded their relevance as nanomaterial building blocks. In this presentation, we report on lignin nano- and micro-particles with smooth and wrinkled surface morphologies prepared by using the aerosol flow method that we introduced recently1. The morphologies of the lignin particles were characterized by electron tomography, which allowed access to the surface features and to quantitatively analyze their characteristics in terms of spherical harmonic decomposition. Other supporting inquiries include surface roughness and mechanical strength. Together with dynamic light scattering measurements and scanning electron microscopy, we describe the relationship between wrinkling and processing parameters and indicate the prospects for surface functionalization into advanced materials.

Surface wrinkling phenomena in spherical lignin nano- and micro-particles obtained by aerosol flow synthesis

253rd National Meeting (2017)

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