Mesoporous silica as amine immobiliser for endowing healing functionality to epoxy resin
Source abstract
Abstract
Abstract Feasibility of physical entrapment approach towards the immobilisation of amine hardener in mesoporous silica has been demonstrated for potential applications in the perspective of self-healing. A representative mesoporous silica (SBA-15) was synthesised using polymer-templated technique and employed as a substrate for immobilizing triethylene tetramine, a conventional epoxy hardener. Polymeric composites containing microencapsulated epoxy microcapsules and amine loaded SBA-15 were prepared by room temperature curing. The autocatalytic nature associated with the curing of epoxy remained unaltered due to introduction of either SBA-15 or epoxy loaded microcapsules, as confirmed by calorimetric studies. Healing efficiency, as quantified in terms of the ratio of impact strength before and after healing, was found to increase proportionally with increasing loading of healing additives in the formulation, with complete healing (100%) being exhibited at 20% microcapsule loading.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer composites and self-healing · Silicone and Siloxane Chemistry · Covalent Organic Framework Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (19)
Show source-provided references
1. Self-Healing Polymers and Composites10.1146/annurev-matsci-070909-104532 ↗
2. In situ poly(urea-formaldehyde) microencapsulation of dicyclopentadiene10.3109/02652040309178083 ↗
3. Application of microencapsulated unsaturated polyester toward temperature-triggered healing in epoxy composites
4. Polydimethylsiloxane-based self-healing materials10.1002/adma.200501814 ↗
5. Self-healing epoxy composites – Preparation and effect of the healant consisting of microencapsulated epoxy and latent curing agent10.1016/j.compscitech.2006.07.028 ↗
6. The permeability and stability of microencapsulated epoxy resins10.1007/s10853-006-0606-6 ↗
7. Microencapsulation of a reactive liquid-phase amine for self-healing epoxy composites10.1021/ma902251n ↗
8. Microcapsule enabled multicatalyst system10.1021/ja066476l ↗
9. Self-healing thermoset using encapsulated epoxy-amine healing chemistry10.1016/j.polymer.2011.12.005 ↗
10. Self-healing epoxy via epoxy–amine chemistry in dual hollow glass bubbles10.1016/j.compscitech.2014.01.009 ↗
11. Methodology for the immobilization of enzymes onto mesoporous materials10.1021/jp052102n ↗
12. Immobilization, stability and enzymatic activity of albumin and trypsin adsorbed onto nanostructured mesoporous SBA-15 with compatible pore sizes10.1039/C3RA46002A ↗
13. Enzyme immobilisation using SBA-15 mesoporous molecular sieves with functionalised surfaces10.1016/S1381-1177(01)00011-X ↗
14. Verified syntheses of mesoporous materials10.1016/j.micromeso.2009.03.046 ↗
15. Influence of microcapsule shell material on the mechanical behavior of epoxy composites for self-healing applications10.1002/app.40572 ↗
16. Thermal activation of mendable epoxy through inclusion of microcapsules and imidazole complexes10.1080/03602559.2015.1070866 ↗
17. Effect of microcapsule size on the performance of self-healing polymers10.1016/j.polymer.2007.04.008 ↗
18. Application of alkoxyamine in self-healing of epoxy10.1039/C4TA00130C ↗
19. Self-healing epoxy with a fast and stable extrinsic healing system based on BF3-amine complex10.1039/C6RA17976B ↗