New Thermally Remendable Highly Cross-Linked Polymeric Materials
University of Southern California · University of California, Los Angeles
Abstract
Two new remendable highly cross-linked polymers, 2ME4F and 2MEP4F, were prepared without solvent. Solid-state NMR (nuclear magnetic resonance) was used to study the thermal reversibility of Diels−Alder (DA) cross-linking, and it was found that DA connections and disconnections of both polymers are thermally reversible. Differential scanning calorimeter and dynamical mechanical analysis were applied to study thermal and mechanical properties of these materials, and it is found that the glass transition temperature (Tg) of 2ME4F is about 30−40 °C and that of 2MEP4F is about 80 °C. A qualitative study of the healing efficiency of 2MEP4F showed that cracks can be healed effectively with a simple thermal healing…
Citation impact
- FWCI
- 5.68
- Percentile
- 100%
- References
- 11
Authors
5- XCXiangxu Chen
University of Southern California, University of California, Los Angeles
- FWFred WudlCorresponding
University of Southern California, University of California, Los Angeles
- AMAjit Mal
University of Southern California, University of California, Los Angeles
- HSHongbin Shen
University of Southern California, University of California, Los Angeles
- SNSteven Nutt
University of Southern California, University of California, Los Angeles
Topics & keywords
- Differential scanning calorimetry
- Polymer
- Glass transition
- Materials science
- Solvent
- Thermal
- Thermal analysis
- Composite material