نتایج جستجو برای: microcapsule
تعداد نتایج: 600 فیلتر نتایج به سال:
Microcapsules offer a wide variety of convenience in drug delivery when compared with conventional dosage forms. It is unique carrier system for many pharmaceuticals. Microencapsulation potential process which prolongs the efficacy significantly and improves patient compliance. This approach can alleviate limitations dose dumping, multiple inconvenience, kidney disease. form has advantages elde...
Preparation and Characterization of Poly (urea- Formaldehyde) Walled Dicyclopentadiene Microcapsules
Poly (urea-formaldehyde) (PUF) shelled dicyclopentadiene (DCPD) microcapsules were prepared by in-situ polymerization technology for self-healing concrete applications. It’s found, during the process, sodium dodecyl benzene sulfonate (SDBS) behaves better in emulsification of DCPD than other surfactant of sodium lauryl sulfate (SLS) and styrene maleic anhydride copolymer (SMA), and the addition...
Self-healing is achieved with a dual-microcapsule system utilizing epoxy-amine chemistry in a high temperature cured thermosetting epoxy polymer. One capsule contains a modified aliphatic polyamine prepared by vacuum infiltration of polyoxypropylenetriamine into hollow polymeric microcapsules. The second capsule contains a difunctional epoxide and reactive diluent. Healing efficiency is accesse...
the present study concerned with the development and characterization of metronidazole microcapsules prepared by thermal change method using different ratios (1:1, 1:2 and 1:4) of ethyl cellulose in order to select the best microcapsule formulation with a good encapsulation efficiency and drug release profile. the obtained microcapsules were discrete, spherical with free flowing properties and ...
Microcapsules made of biopolymers are of both scientific and technological interest and have many potential applications in medicine, including their use as controlled drug delivery devices. The present study makes use of the electrostatic interaction between polycations and polyanions to form a multilayered microcapsule shell and also to control the loading and release of charged drug molecule...
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