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Titel: Tailored Interaction between Cellulose Nanowhiskers and Core-Shell Particles Determines the Optical and Mechanical Properties in Hybrid Films
VerfasserIn: Leiner, Regina
Witayakran, Suteera
Verwaayen, Sascha
Siegwardt, Lukas
Ribeiro, Catarina C.
Dietz, Christian
Koch, Marcus
Kulachenko, Artem
Gallei, Markus
Sprache: Englisch
Titel: ACS applied materials & interfaces
Bandnummer: 16
Heft: 46
Seiten: 64377-64387
Verlag/Plattform: ACS
Erscheinungsjahr: 2024
Freie Schlagwörter: cellulose nanowhiskers
opal films
structural colors
photonic glasses
emulsion polymerization
core−shell particles
DDC-Sachgruppe: 540 Chemie
Dokumenttyp: Journalartikel / Zeitschriftenartikel
Abstract: Hybrid materials of core-shell particles and cellulose nanowhiskers (CNWs) were synthesized to produce opal films with increasing tensile strength. After the incorporation of CNWs into the processed particle films, differences in the mechanical and optical properties were noticeable, which stemmed from the adhesion forces between the cellulose and the particles' shell material. Two different particle compositions were compared, using polystyrene as cores, and either poly(ethyl acrylate) (PEA) or a copolymer of ethyl acrylate and 3 wt % of 2-hydroxyethyl methacrylate (HEMA) as the shell material. Stronger interactions between the particles containing HEMA and the CNWs were displayed via atomic force microscopy particle manipulation experiments, where higher forces were required to deliberately move P(EA-co-HEMA) particles on a CNW substrate compared to PEA particles. The stronger interaction behaviors increased the disorder of the particles within the opal films toward photonic glasses with angle-independent structural colors. Also, the increase in tensile strength from <1 MPa at a cellulose content of 0 wt % to 6 MPa at the optimal CNW content of 15 wt % was more pronounced compared to the particle-cellulose mixture with only PEA in the particle shell. Thus, the presence of the hydroxy groups in the particles' shell material on the molecular level significantly influenced the optical and mechanical properties on the macroscopic level.
DOI der Erstveröffentlichung: 10.1021/acsami.4c16816
URL der Erstveröffentlichung: https://pubs.acs.org/doi/10.1021/acsami.4c16816
Link zu diesem Datensatz: urn:nbn:de:bsz:291--ds-436411
hdl:20.500.11880/39119
http://dx.doi.org/10.22028/D291-43641
ISSN: 1944-8252
1944-8244
Datum des Eintrags: 4-Dez-2024
Fakultät: NT - Naturwissenschaftlich- Technische Fakultät
Fachrichtung: NT - Chemie
Professur: NT - Prof. Dr. Markus Gallei
Sammlung:SciDok - Der Wissenschaftsserver der Universität des Saarlandes

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