Designing 3D fractal morphology of eco-friendly nanocellulose-based composite aerogels for water remediation

Lorevice, Marcos V.; Claro, Pedro Ivo Cunha; Aleixo, Nadia Andrade; Martins, Lívia S.; Maia, Marcella T.; Oliveira, Ana Paula Sendão; Martinez, Diego Stéfani T.; Gouveia, Rubia F.

doi:10.1016/j.cej.2023.142166

Cited by 17 publications

(1 citation statement)

References 59 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Blue arrows in Figure 6b confirmed that CCNFs adsorb on the NRL surface, even after diluting the sample for cryo-TEM, reinforcing that the strong electrostatic interaction between these nanoparticles creates micro cross-linking points that restrict the swelling by water. Mixtures of negatively charged CNFs and NRL exhibit different arrangements in water, as observed by Lorevice et al 59 using cryo-TEM. Due to the electrostatic repulsion, the oxidized nanofibrils do not adsorb onto the NRL surface as CCNFs.…”

Section: Improving Ccnfs Cohesion In Water By the Electrostatic Assemblysupporting

confidence: 59%

Enhancing Water Resistance in Cationic Cellulose Nanofibril Adhesive with Natural Rubber Latex

Silva,

Nascimento,

Claro

et al. 2023

ACS Appl. Nano Mater.

Self Cite

View full text Add to dashboard Cite

Adhesives prepared with renewable materials through environmentally friendly processing offer an appealing alternative to their petroleum-based counterparts. Herein, we evaluated the adhesive properties of cationic cellulose nanofibrils (CCNFs) under dry and wet conditions and after mixing with natural rubber latex (NRL). Uniaxial tensile tests of negatively charged substrates (paper, aluminum (Al), and polypropylene (PP)) bonded with CCNF show a maximum lap shear strength that approached the failure point of the substrates, indicating the formation of a robust adhesive joint. The wet adhesion of CCNFs was improved (53% for PP and 154% for Al) by simple aqueous mixing with NRL suspension. This straightforward methodology promotes controlled CCNF and NRL electrostatic assembly that reduces the swelling of nanofibrils by water and improves adhesive cohesion. Cryogenic transmission electron microscopy images of CCNF/NRL complexes reveal that NRL particles are coated by a fibrillar CCNF network, providing morphological evidence that cationic nanofibrils contribute to interfacial adhesion to the solid substrates, while NRL enhances water resistance. This study presents a simple method to control noncovalent interactions and prepare nanocellulosebased adhesives with good mechanical properties and improved water resistance that are suitable for developing adhesives for different fields.

show abstract

Section: Improving Ccnfs Cohesion In Water By the Electrostatic Assemblysupporting

confidence: 59%