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Decoding in-plane orientation in cellulose nanopapers hybridized with tailored polymeric nanoparticles
Åsa Jerlhagen1,2, Korneliya Gordeyeva1,2, Martina Cattaruzza1
1KTH 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.
Nanoscale
|March 12, 2025
Summary
Polymeric nanoparticles can control the orientation of cellulose nanofibrils (CNFs) in biomimetic materials. This study quanties CNF alignment, enabling tailored mechanical properties for advanced nanocellulose applications.
Area of Science:
- Materials Science
- Nanotechnology
- Polymer Science
Background:
- Biobased cellulose nanofibrils (CNFs) are key components for creating nanostructured materials.
- Hybridization with polymeric nanoparticles offers potential for tailoring material properties.
Purpose of the Study:
- To investigate how polymeric nanoparticle additives influence the orientation of CNFs.
- To establish a quantitative method for assessing cross-sectional CNF orientation.
- To understand the relationship between nanoparticle characteristics and CNF network structure.
Main Methods:
- Utilizing X-ray scattering to quantify CNF orientation at various length scales.
- Developing a novel method for measuring cross-sectional orientation in hybrid materials.
Main Results:
- Polymeric nanoparticles (<1 wt%) can either increase or decrease CNF alignment.
- The size of nanoparticles dictates a controllable maximum feature size within the CNF network.
- Quantitative cross-sectional orientation measurements were achieved.
Conclusions:
- Nanoparticle additives offer a route to control the bulk mechanical properties of CNF-based materials.
- The developed X-ray scattering method provides crucial insights into nanoscale structure-property relationships.
- This work lays a foundation for designing advanced hybrid nanocellulose materials.
