Preparation and Characteristics of Poly(ε-caprolactone) Microcapsules Containing Pseudomonas by W/O/W Emulsion

Abstract

Biodegradable poly(ε-caprolactone)(PCL) microcapsules containing pseudomonas were prepared by W/O/ W emulsion system. The characteristics and release behaviors of the microcapsules were investigated as a function of manufacturing conditions. The morphology and particle distribution of the microcapsules were observed by a scanning electron microscope and a particle size analyzer. The release behaviors of the pseudomonas were determined using a cell culture method. It was found that smooth and spherical microcapsules were formed by W/O/W emulsion system and particle size was in the range of 10 to 60 µm. The release behaviors of the pseudomonas were influenced by the manufacturing conditions. It was indicated that the increase of the surfactant content and stirring rate led to an increased release rate, resulting from the high specific surface area of the smaller particle size, and the increase of the PCL content provided the sustained release behaviors by the delay effect of diffusion in the release medium.

Microstructure, Thermal Properties and Rheological Behavior of PLA/PCL Blends for Melt-blown Nonwovens

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Enhancement of physical and optical performances of polycarbonate‐based diffusers for direct‐lit LED backlight unit by incorporation of nanoclay platelets

“…reported that thermally induced warpage phenomena, which is a significant problem for the diffuser of direct‐lit BLUs, was effectively prevented, and the thermo‐mechanical properties were also improved by addition of inorganic glass fibers as reinforcements besides polymeric beads during the extrusion compounding process . In our previous study, we confirmed that the incorporation of inorganic porous silica particles combined with PMMA beads into the polycarbonate (PC) matrix remarkably enhanced the thermal and mechanical properties as well as the luminance uniformity for the compound‐type diffuser …”

“…As revealed in the previous DSC results, when incorporated with nanoclay, the peak temperature in the tan δ curves shifted toward higher temperature, indicating an increase in the glass transition temperature. It has also been reported that the thermo‐mechanical properties of the optical diffuser used for a BLU system can be enhanced by incorporating the micro‐sized inorganic fillers such as glass fiber and porous silica particle into polymer resin …”

Selenide‐chitosan as High‐performance Nanophotocatalyst for Accelerated Degradation of Pollutants

“…Decontamination of wastewater has been carried out by different treatment systems and conventional methods like filtration, evaporation, coagulation, flocculation, ion exchange, electro‐precipitation, reverse osmosis, ultra‐filtration, biological treatment, wet oxidation, adsorption, chemical and electrochemical techniques . Most of these methods carry out incomplete removal of dyes.…”