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Biobased Precursors for One-Pot Upgradable Multi Dynamic Linkages Based Covalent Adaptable Networks With Tunable
Chiku Sahoo1, Chandan Upadhyay2, Umaprasana Ojha1
1Department of Chemistry, Indian Institute of Technology Bhubaneswar, Khordha, Odisha, India.
Macromolecular Rapid Communications
|August 10, 2026
Summary
This study introduces novel biobased covalent adaptable networks (CANs) with multiple dynamic linkages. These advanced materials offer enhanced mechanical properties, presenting a sustainable alternative to conventional plastics.
Area of Science:
- Materials Science
- Polymer Chemistry
- Sustainable Chemistry
Background:
- Covalent adaptable networks (CANs) offer stimuli-responsive properties, making them alternatives to single-use plastics.
- Existing CANs often rely on a single dynamic linkage, limiting property tunability.
- Biobased precursors are sought for sustainable polymer development.
Purpose of the Study:
- To develop novel biobased CANs with multiple dynamic linkages.
- To explore the synthesis of CANs from 5-hydroxymethylfurfural (HMF) derivatives.
- To investigate the impact of multiple dynamic linkages on material properties.
Main Methods:
- Synthesis of thioacetal-based CANs (PEMP-HMF-n) using HMF and a tetra-thiol crosslinker.
- Functionalization of HMF derivative for multi-dynamic linkage CANs (PEMP-HMFA-n).
- Characterization of mechanical properties (tensile stress) of synthesized CANs.
Main Results:
- Successfully synthesized biobased CANs with thioacetal linkages.
- Developed multi-dynamic linkage CANs (PEMP-HMFA-n) incorporating thioacetal, thia-Michael, and Diels-Alder adducts.
- PEMP-HMFA-n films exhibited a five-fold increase in tensile stress compared to PEMP-HMF-n.
Conclusions:
- Biobased CANs with multiple dynamic linkages can be synthesized using HMF derivatives.
- Multiple dynamic linkages significantly enhance the mechanical strength of CANs.
- This approach enables tailored design of adaptable and sustainable polymer networks.
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