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Microencapsulation is a process in which tiny particles or droplets are surrounded by a coating to give small capsules, with useful properties. [ 1 ] [ 2 ] In general, it is used to incorporate food ingredients , [ 3 ] enzymes , cells or other materials on a micro metric scale.
Cell microencapsulation technology involves immobilization of cells within a polymeric semi-permeable membrane. It permits the bidirectional diffusion of molecules such as the influx of oxygen, nutrients, growth factors etc. essential for cell metabolism and the outward diffusion of waste products and therapeutic proteins.
Gale W. Matson accidentally invented the technology while working for 3M in the 1960s. He was attempting to create a new method for making carbonless copy paper using microencapsulation. [1] The technology to infuse microcapsules and paper was submitted to the US patent office on November 18, 1969, and the patent was granted on June 23, 1970. [2]
Microencapsulation is the most common method to develop self-healing coatings. The capsule approach originally described by White et al., using microencapsulated dicyclopentadiene (DCPD) monomer and Grubbs' catalyst to self-heal epoxy polymer [ 59 ] was later adapted to epoxy adhesive films that are commonly used in the aerospace and automotive ...
The Journal of Microencapsulation is a peer-reviewed scientific journal that covers research on the preparation, properties, and uses of individually encapsulated novel small particles, as well as improvements to techniques using micro and nano particles in industrial, engineering, pharmaceutical, biotechnology, and research applications.
An example of in situ self-healing polymerization of microcapsule-imbedded nanoparticles to yield a polymer nanocomposite product (left: pink-colored nanoparticles and blue microcapsules; middle: damage being inflicted on depicted site; right: polymerization of microcapsule-imbedded nanoparticles in order to deal damaged site.
Food technology, Food engineering, Food safety and Food biotechnology. Agricultural biotechnology. Immobilized cells and enzymes; Microencapsulation of food additives and vitamins, etc. Chemical engineering; Plant biology and Crop sciences; Animal sciences
Microencapsulation (diameter < 1 mm) remains a popular technology for manufacturing autonomous self-healing components for cementitious systems, inspired by the pioneering study of White et al. Microcapsules were directly incorporated into the matrix and upon crack development, and releasing the core in the crack volume. [19]