Composite microcapsules with enhanced mechanical stability and reduced active ingredient leakage

Composite microcapsules with enhanced mechanical stability and reduced active ingredient leakage

A calcium shellac (CS) matrix was used to encapsulate polymeric melamine formaldehyde microcapsules (A) or CaCO3 nanoparticles-stabilized microcapsules (B), both of which encapsulated an oilbased active ingredient, producing A-CS or B-CS composite microcapsules. The mechanical properties and oil release profiles of the composite microcapsules were evaluated. The composite microcapsules showed e...

Mechanical stability of multicomponent polysaccharide microcapsules

Nowadays one can observe the explosion in recovery of new polysaccharidic materials with specific controllable properties, including mechanical characteristic, morphology, biological activity and biodegradability. Specifically, formation and application of hydrogel microcapsules by biomedical and pharmaceutical industry seem to be very promising (Wang, et al., 2006). Despite many successful app...

Electrically and Electrochemically Active Composite Based on Polyester/Reduced Graphene Oxide/Polypyrrole with Remarkable Washing Durability

Polymer microcapsules with programmable active release.

We present a new type of microcapsule programmed with a tunable active release mechanism. The capsules are triggered by a plasticizing stimulus that induces a phase change transition of the polymeric membrane from a solid to a fluidized form; thereafter, the cargo is actively driven out of the capsule through a defect at the capsule wall with controllable release kinetics. Tuning the degree of ...

Experimental Study on Mechanical Properties and Porosity of Organic Microcapsules Based Self-Healing Cementitious Composite

Encapsulation of healing agents embedded in a material matrix has become one of the major approaches for achieving self-healing function in cementitious materials in recent years. A novel type of microcapsules based self-healing cementitious composite was developed in Guangdong Provincial Key Laboratory of Durability for Marine Civil Engineering, Shenzhen University. In this study, both macro p...