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Quantitative and Qualitative Examination of Particle-particle Interactions Using Colloidal Probe Nanoscopy
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Colloidal Lignin Particles as Adhesives for Soft Materials.
Maija-Liisa Mattinen1, Guillaume Riviere2, Alexander Henn3
1Bioproduct Chemistry, Department of Bioproducts and Biosystems, School of Chemical Engineering, Aalto University, P.O. Box 16300, FI-00076 Aalto, Espoo, Finland. maija.mattinen@outlook.com.
Nanomaterials (Basel, Switzerland)
|December 6, 2018
Summary
Researchers developed novel lignin nanoparticles for advanced bionanomaterials. These lignin nanoparticles significantly enhance adhesive properties for applications in medicine, food, and textiles, improving stress and strain performance.
Area of Science:
- Biomaterials Science
- Polymer Chemistry
- Nanotechnology
Background:
- Lignin, a renewable biopolymer, possesses inherent functionalities suitable for adhesive applications.
- Current applications of lignin are limited by its processability and performance.
- Nanoparticulate morphology offers a promising route to enhance lignin's properties.
Purpose of the Study:
- To develop lignin-based nanoparticles (NPs) for enhanced adhesive formulations.
- To investigate the performance of these lignin NPs in improving material properties like stress, strain, and stiffness.
- To explore the potential of lignin NPs in diverse applications including medicine, food, and textiles.
Main Methods:
- Preparation of poly(L-lysine) (PL) and poly(L-glutamic acid) (PGA) coated lignin NPs for nanocellulose fibril coating.
- Development of beta-casein coated and transglutaminase (Tgase) cross-linked lignin NPs for agglutination.
- Characterization using Size Exclusion Chromatography (SEC), Fourier-Transform Infrared (FTIR) spectroscopy, Zeta Potential, Dynamic Light Scattering (DLS), Quartz Crystal Microbalance (QCM), Atomic Force Microscopy (AFM), and Transmission Electron Microscopy (TEM).
Main Results:
- Lignin-based colloidal lignin particles (CLPs) improved stress by approximately 10 times and strain by 6 times compared to unmodified Kraft.
- Beta-casein NPs demonstrated improvements of 20 times in stress and 8 times in strain.
- Incorporation of NPs into adhesive formulations significantly increased Young's moduli, enhancing joint stiffness.
Conclusions:
- Lignin can be effectively utilized in nanoparticulate forms to create advanced bionanomaterials.
- Lignin NPs offer a significant improvement in adhesive performance, showing potential for various industrial applications.
- The developed lignin-based bionanomaterials represent a sustainable alternative for high-performance adhesives.
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