Abstract
– Microcapsules technology for smart materials application were developed recently years. One of the smart materials was self-healing coating. The microcapsules containing healing agent are dispersed into a polymeric matrix to form self-healing composite. Additionally, the microcapsules might be incorporated into paint for coating application. The main idea of self-healing coating is to design smart self-healing systems with inherent ability of self-repair. Many studies that have been done proposed several healing stimulus mechanisms. Commonly the capsules shell composed from organic polymers, such as urea-formaldehyde, polyurethane, and melamine formaldehyde. In this research, poly (urea-formaldehyde) (PUF) microcapsules containing linseed oil were synthesized by in-situ polymerization method. The obtained microcapsules were analyzed based on parameter of formaldehyde to urea mass ratio (2, 3, 4, and 5). The result show that the increase of formaldehyde to urea ratio increased the microcapsules shell thickness.
Highlights
Microcapsules technology for smart materials application were developed recently years
Poly (PUF) microcapsules containing linseed oil were synthesized by in-situ polymerization method
The formation of microcapsules occured via condensation proccess between urea and formaldehyde
Summary
Microcapsules technology for smart materials application were developed recently years. One of the smart materials was self-healing coating. The microcapsules containing healing agent are dispersed into a polymeric matrix to form self-healing composite. An autonomous self-healing coating contains a healing agent that is capable of polymerizing or using a corrosion inhibitor. While the mechanism of non-autonomous self-healing coating, the repair process. Urea-formaldehyde can be used as a binding material for weather resistant plywood, dyes, plastic furniture, or coatings on metal furniture (Higgins, 2006). Some studies have been synthesized microcapsules containing linseed oil through in-situ polymerization methods with poly (urea-formaldehyde) (PUF) as shell material. The size and concentration of the microcapsules in the resin affect the corrosion resistant performance of self-healing coating (Behzadnazab et al, 2017). Poly (urea-formaldehyde) (PUF) microcapsules containing linseed oil were synthesized by in-situ polymerization method. The obtained microcapsules were analyzed based on parameter of formaldehyde to urea mass ratio (2, 3, 4, and 5)
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