About Me
"Self-healing" Polymer Materials:
+ ROMP
+ "Click" Chemistry
Polymer Matrix Composites:
+ High-temperature cyanate ester nanocomposites
Polymer Chemistry
Self-healing Materials
Self-healing Materials: Click Chemistry
Self-healing materials with ROMP healing agent system are well developed. However, the cost of ROMP system is very high. Assume that the matrix is made of epoxy, which is around $0.10/gram. The healing agent, DCPD, is a by-product of refinery, and it is $0.07/g even cheaper than epoxy matrix. The catalyst which triggers the... »
Self-healing Materials: ROMP system
A well-reported microencapsulated system is a “ROMP” system: the microcapsules containing norborene-based monomers as healing agents and the Grubbs’ catalyst which can trigger “ROMP”. “ROMP” stands for Ring-Opening Metathesis Polymerization. The Grubbs’ catalysts (1st, 2nd…generations) can initiate the polymerization and have advantages, such as high activity, tolerant to environment, moisture, oxygen and lots of other... »
Self-healing Materials: Microcapsules
Microcapsules are one of the most crucial factors in fabricating self-healing materials, and must be carefully engineered. Making these microcapsules is a complex problem with many requirements: the encapsulation procedure must be compatible with the reactive healing agent, the liquid healing agent must not diffuse out of the capsule wall during its potentially... »
Self-healing Materials: Concept
The story of the “self-healing” materials was developed by the research teams in University of Illinois at Urbana-Champaign. My advisor, Dr.Kessler was beginning his Ph.D. research in the one of these teams. This novel concept is publised on Nature, Feb 15, 2001, to describe a... »