Bringing Sustainability to Macroporous Polystyrene: Cellulose Nanocrystals as Cosurfactant and Surface Modifier in Deep Eutectic Solvent-Based Emulsion Templating
Por:
Huerta-Marcial, Silvia T., Ruiz-Deance, Ana L., Mota-Morales, Josue D.
Publicada:
15 nov 2021
Resumen:
Macroporous polymers were produced from nonaqueous high internal phase
emulsions (HIPEs) containing a deep eutectic solvent (DES) and
stabilized by mixtures of unmodified cellulose nanocrystals (CNCs) and a
nonionic surfactant. The effect of the CNC/surfactant ratio on HIPEs
morphology and rheological properties was thoroughly investigated. Upon
free-radical polymerization of styrene/divinylbenzene in the continuous
phase, highly interconnected macroporous structures with
cellulose-functionalized surfaces and robust mechanical properties were
obtained. Additionally, the generation of nanocellulose dispersions from
biomass in situ in the acidic DES internal phase of HIPEs and subsequent
polymerization was proposed to synthesize interconnected macroporous
polymers. Biomass incorporation into macroporous polymers further
emphasizes the sustainable character of the DES-based emulsion
templating introduced in this work.
Filiaciones:
Huerta-Marcial, Silvia T.:
Univ Nacl Autonoma Mexico, Dept Nanotechnol, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76230, Qro, Mexico
Ruiz-Deance, Ana L.:
Univ Nacl Autonoma Mexico, Dept Nanotechnol, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76230, Qro, Mexico
Mota-Morales, Josue D.:
Univ Nacl Autonoma Mexico, Dept Nanotechnol, Ctr Fis Aplicada & Tecnol Avanzada, Queretaro 76230, Qro, Mexico
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