Microscale 3D Printing and Tuning of Cellulose Nanocrystals Reinforced Polymer Nanocomposites

Groetsch, Alexander; Stelzl, Samuel; Nagel, Yannick; Kochetkova, Tatiana; Scherrer, Nadim; Ovsianikov, Aleksandr; Michler, Johann; Pethö, Laszlo; Siqueira, Gilberto; Nyström, Gustav; Schwiedrzik, Jakob (2022). Microscale 3D Printing and Tuning of Cellulose Nanocrystals Reinforced Polymer Nanocomposites Small, 19(3), p. 2202470. Wiley-VCH 10.1002/smll.202202470

[img] Text
Groetsch_2022_2202470_1-12.pdf - Published Version
Restricted to registered users only
Available under License Publisher holds Copyright.

Download (3MB) | Request a copy

The increasing demand for functional materials and an efficient use of sustainable resources makes the search for new material systems an ever growing endeavor. With this respect, architected (meta-)materials attract considerable interest. Their fabrication at the micro- and nanoscale, however, remains a challenge, especially for composites with highly different phases and unmodified reinforcement fillers. This study demonstrates that it is possible to create a non-cytotoxic nanocomposite ink reinforced by a sustainable phase, cellulose nanocrystals (CNCs), to print and tune complex 3D architectures using two-photon polymerization, thus, advancing the state of knowledge toward the microscale. Micro-compression, high-res scanning electron microscopy, (polarised) Raman spectroscopy, and composite modeling are used to study the structure-property relationships. A 100% stiffness increase is observed already at 4.5 wt% CNC while reaching a high photo-polymerization degree of ≈80% for both neat polymers and CNC-composites. Polarized Raman and the Halpin-Tsai composite-model suggest a random CNC orientation within the polymer matrix. The microscale approach can be used to tune arbitrary small scale CNC-reinforced polymer-composites with comparable feature sizes. The new insights pave the way for future applications where the 3D printing of small structures is essential to improve performances of tissue-scaffolds, extend bio-electronics applications or tailor microscale energy-absorption devices.

Item Type:

Journal Article (Original Article)

Division/Institute:

Bern Academy of the Arts
Bern Academy of the Arts > Institute Materiality in Art and Culture

Name:

Groetsch, Alexander;
Stelzl, Samuel;
Nagel, Yannick;
Kochetkova, Tatiana;
Scherrer, Nadim0000-0002-6576-885X;
Ovsianikov, Aleksandr;
Michler, Johann;
Pethö, Laszlo;
Siqueira, Gilberto;
Nyström, Gustav and
Schwiedrzik, Jakob

Subjects:

T Technology > T Technology (General)

ISSN:

1613-6810

Publisher:

Wiley-VCH

Language:

English

Submitter:

Nadim Scherrer

Date Deposited:

14 Dec 2022 14:13

Last Modified:

22 Jan 2023 01:36

Publisher DOI:

10.1002/smll.202202470

ARBOR DOI:

10.24451/arbor.18412

URI:

https://arbor.bfh.ch/id/eprint/18412

Actions (login required)

View Item View Item
Provide Feedback