Cellulose nanopaper with polymeric nanoparticle additives – what is the role of nanoparticle surface functionality?
Source abstract
Abstract
Polymeric nanoparticles with tunable surface functionalities were synthesized via polymerization-induced self-assembly (PISA) to study their interactions with TEMPO-oxidized cellulose nanofibrils (TO-CNFs) in wet and dry states. The nanoparticles possessed a rigid core and shells featuring anionic, polyethylene glycol (PEG)-like, and hydroxyl-rich functionalities, with different hydrogen bonding propensities, water binding, and glass transition temperatures. Hydroxyl-functional nanoparticles exhibited enhanced and irreversible adsorption onto CNFs compared to anionic and PEG-like functions, showing that shell functionality impacts the adsorption behavior in the wet state. In the dry state, shell functionality plays a minor role in the bulk mechanical properties, which depend instead on the nanoparticle amount. This work shows that additive interactions between colloidal components in water do not translate to interactions in the dry state.
Source: europepmc · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Advanced Cellulose Research Studies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
KTH Royal Institute of Technology, Department of Fiber and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Teknikringen 56, SE-100 44 Stockholm, Sweden
FibRe – Centre for Lignocellulose-based Thermoplastics, KTH Royal Institute of Technology, Department of Fiber and Polymer Technology, School of Engineering Sciences in Chemistry, Biotechnology and Health, Teknikringen 56, SE-100 44 Stockholm, Sweden
Wallenberg Wood Science Center, Department of Fibre and Polymer Technology, KTH Royal Institute of Technology, Teknikringen 56-58, SE-100 44 Stockholm, Sweden
Department of Bioproducts and Biosystems, Aalto University, Vuorimiehentie 1, 02150 Espoo, Finland
Funding
Vetenskapsrådet · Wallenberg Wood Science Center · VINNOVA
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