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Tuning the Mechanical Properties of 3D‐printed Objects by the RAFT Process: From Chain‐Growth to Step‐Growth.
- Source :
- Angewandte Chemie International Edition; 3/4/2024, Vol. 63 Issue 10, p1-6, 6p
- Publication Year :
- 2024
-
Abstract
- Photoinduced 3D printing based on the reversible addition‐fragmentation chain transfer (RAFT) process has emerged as a robust method for creating diverse functional materials. However, achieving precise control over the mechanical properties of these printed objects remains a critical challenge for practical application. Here, we demonstrated a RAFT step‐growth polymerization of a bifunctional xanthate and bifunctional vinyl acetate. Additionally, we demonstrated photoinduced 3D printing through RAFT step‐growth polymerization with a tetrafunctional xanthate and a bifunctional vinyl acetate. By adjusting the molar ratio of the components in the printing resins, we finely tuned the polymerization mechanism from step‐growth to chain‐growth. This adjustment resulted in a remarkable range of tunable Young's moduli, ranging from 7.6 MPa to 997.1 MPa. Moreover, post‐functionalization and polymer welding of the printed objects with varying mechanical properties opens up a promising way to produce tailor‐made materials with specific and tunable properties. [ABSTRACT FROM AUTHOR]
- Subjects :
- POLYCONDENSATION
YOUNG'S modulus
POLYMERS
POLYMERIZATION
THREE-dimensional printing
Subjects
Details
- Language :
- English
- ISSN :
- 14337851
- Volume :
- 63
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- Angewandte Chemie International Edition
- Publication Type :
- Academic Journal
- Accession number :
- 175671305
- Full Text :
- https://doi.org/10.1002/anie.202318564