UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

Bouncing and 3D printable hybrids with self-healing properties

Tallia, F; Russo, L; Li, S; Orrin, ALH; Shi, X; Chen, S; Steele, JAM; ... Jones, JR; + view all (2018) Bouncing and 3D printable hybrids with self-healing properties. Materials Horizons , 5 pp. 849-860. 10.1039/c8mh00027a. Green open access

[img]
Preview
Text
J283_Tallia_Mat_Horizons_accepted180613_2018.pdf - Accepted version

Download (2MB) | Preview

Abstract

Conventional composites often do not represent true synergy of their constituent materials. This is particularly evident in biomaterial applications where devices must interact with cells, resist cyclic loads and biodegrade safely. Here we propose a new hybrid system, with co-networks of organic and inorganic components, resulting in unprecedented mechanical properties, including “bouncy” elasticity and intrinsic ability to self-heal autonomously. They are also developed as new ‘inks’ that can be directly 3D printed. A hybrid is different from a nanocomposite because the components are indistinguishable from each other at the nanoscale and above. The properties are generated by a novel methodology that combines in situ cationic ring-opening polymerisation with sol–gel, creating silica/poly(tetrahydrofuran)/poly(ε-caprolactone) hybrids with molecular scale interactions and covalent links. Cartilage is notoriously difficult to repair and synthetic biomaterials have yet to mimic it closely. We show that 3D printed hybrid scaffolds with pore channels of ∼200 μm mimic the compressive behaviour of cartilage and provoke chondrocytes to produce markers integral to articular cartilage-like matrix. The synthesis method can be applied to different organic sources, leading to a new class of hybrid materials.

Type: Article
Title: Bouncing and 3D printable hybrids with self-healing properties
Open access status: An open access version is available from UCL Discovery
DOI: 10.1039/c8mh00027a
Publisher version: https://doi.org/10.1039/c8mh00027a
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10058883
Downloads since deposit
28Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item