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Showing 1 to 20 of 58 for “"Microcapsule"”.
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Microcapsule-based self-protecting coatings
… a viable coating system that is based on the microcapsule motif, yet retains high performance and is environmentally friendly (green chemistries)? This is the central question of this thesis. Here we introduce and develop an environmentally-friendly, anti-corrosion protective polymer coating …
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Microcapsule drug delivery device for treatment of glioblastoma multiforme
… site. I have developed implantable drug delivery microcapsule devices for the localized delivery of temozolomide and for treatment of glioblastoma multiforme in this work. I have been able to modulate the drug release profiles from these microcapsules based on the physical chemistry of the drug …
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Microcapsule Containing Lactic Acid Bacteria for Treatment of Peptic Ulcers
… straight to the infected area. A whey protein microcapsule is thought to protect the probiotics from stomach acid and delivers the treatment to the affected area. To ensure this microencapsulation treatment is affective, the microcapsules will be stained and imaged to see if the microcapsules …
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Microcapsule-based strategies for enhanced performance of lithium-ion batteries
… electrodes. In this dissertation, two different microcapsule-based strategies to address degradation and enhance battery performance are developed: (1) time-release of encapsulated battery additive, vinylene carbonate (VC) and (2) mechanical triggering of microcapsules embedded in battery …
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Microcapsule-based techniques for improving the safety of lithium-ion batteries
… retardant Tris(2-choloroethyl phosphate) (TCP). Microcapsules containing 3-hexylthiophene are coated onto model battery electrodes and immersed in electrolyte. The microcapsule shell wall insulates the 3-hexylthiophene until the microcapsules are mechanically crushed and electropolymerization of …
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Laboratory and field investigation of the performance of novel microcapsule-based self-healing concrete
… past two decades. An example is the addition of microcapsules that disperse throughout the hardened material subsequently providing reservoirs of healing agents. When cracks arise within the material, they rupture the embedded microcapsules causing a release of their contents into the crack …
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Development of mouse morulae after encapsulation in alginate microgels or poly-l-lysine microcapsule
… in alginate microgels (17%) and embryos in PLL microcapsules (14.60/0). Additionally, recipients of alginate and PLL encapsulated embryos had more resorption sites (4 0/0 and 13.4%) when compared to recipients of unencapsulated embryos (0%). These investigations demonstrated that development of …
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The removal of chlorophenoxy herbicides from drinking water by activated carbon adsorption and liquid core microcapsule perstraction
… by AC adsorption and a novel liquid-core microcapsule perstraction system. Herbicide adsorption to three ACs used in the drinking water industry was dependant on the pH of the water. As pH increased, adsorption decreased. Herbicide adsorption to AC was further decreased when humic acid …
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A histological and immunological response study of an implantable microcapsule drug delivery device for the treatment of glioblastoma
… a patient's own immune response. An implantable microcapsule device, designed to deliver locally chemotherapeutics in the brain, was developed by Alex Scott and Yoda Patta in the Cima Lab at the MIT Koch Institute for Integrative Cancer Research.
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Light as a universal tool : Microcapsule sizing by elastic light scattering and mineral investigation by in situ Raman spectroscopy
… Investigation by in situ Raman Spectroscopy". Microcapsule Sizing by Elastic Light Scattering The industrial development of processes based on microcapsules depends on the possibility to provide clear and complete information about the properties of these microcapsules. However, the tools for …
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Microencapsulation of an omega-3 polyunsaturated fatty acid source with polysaccharides for food applications
… improving their stability. In this work, ω3 PUFA microcapsules were prepared by spray drying with chitosan and blends of chitosan, high-amylose starch, and pullulan as wall materials. The primary objectives of this research were (1) to evaluate the effect of chitosan type and oil:wall ratio on ω3 …
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A novel encapsulation favorably modifies the skin disposition of topically-applied N,N-diethyl-3-methylbenzamide (DEET)
… Incorporation of DEET into a controlled-release microcapsule facilitated a decrease in skin absorption compared to a DEET in ethanol control while evaporation rates were maintained. Although DEET is considered to be a safe active in topical formulations, it is important to minimize skin …
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Novel polymeric microcapsules for targeted drug delivery
… give the particles with many useful properties. Microcapsules have been used to protect the encapsulated material from the environmental conditions or to release the active agent in a sustained and controlled manner into the surrounding medium. This thesis investigated how to develop a …
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The Release of Calcium, Fluoride, and Phosphate Ions from Ion Permeable Microcapsules in a Rosin Varnish
… experiment were capable of diffusing from the microcapsule and through the rosin varnish in a bioavailable form. The microcapsule polymer type was found to have an effect on the rate of phosphate ion release. When analyzing the release of the three ion types, phosphate released the fastest, …
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Microencapsulation studies with P(HB-HV) polymers
… Thus, monolithic microspheres and reservoir-type microcapsules have been respectively fabricated by single and double emulsion-solvent evaporation processes. The objective of the studies reported in chapter three is to asses how a range of preparative variables affect the yield, shape and surface …
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Polymer Chemistry for Improved Self -Healing Composite Materials
… that are able to undergo self-healing through a microcapsule-based mechanism have been developed. The first successful example of this type of material was based on the ring-opening metathesis polymerization of endo-dicyclopentadiene using Grubbs' catalyst. The work herein describes improvements …
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Self-sealing of thermal fatigue and mechanical damage in fiber-reinforced composite materials
… with no measurable gas flow. The effect of DCPD microcapsule size (51 um and 18 um) and concentration (0 - 12.2 wt%) on the self-sealing ability was investigated. Composite specimens with 6.5 wt% 51 um capsules sealed 67% of the time, compared to 13% for the control panels without healing …
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Cryopreservation of microencapsulated bovine spermatozoa
… determine in vitro sperm release times for three microcapsule membranes. Semen was collected from four bulls, pooled, extended in 20% egg yolk TEST to a concentration of 80 = 10⁶ cells/ml, and encapsulated. Microcapsule membranes were constructed from isomers of polylysine: .1% poly-L-lysine …
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A Self -Healing Poly(dimethyl Siloxane) Elastomer
… under torsional fatigue loading. The microcapsule-based self-healing PDMS is capable of recovering a significant portion of the original torsional stiffness and retards dynamic crack growth rate. Depending on the matrix material, a nearly complete recovery of the original torsional …
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