l lactic acid/dichloromethane

Kairomones produced by humans provide female anthropophilic mosquitoes with vital cues used in host-seeking for a blood meal. These chemicals are emanated primarily by the skin and provide the mosquitoes a means to orient themselves to humans at a relatively close range. Chemical studies of these

From microscopic observations, it was established that an oil-in-water emulsion with droplets of a size in the micrometer range can spontaneously form at room temperature without additional external stirring as soon as a solvent that is only partly miscible to water-like dichloromethane (DCM) is put

The aim of this study was to characterize the influence of functionalization of synthetic poly-(L-lactic acid) (PLLA) nanofibers on mechanical properties such as maximum load, elongation, and Young's modulus. Furthermore, the impact of osteoblast growth on the various nanofiber scaffolds stability

Microcapsules were prepared using a poly (L-lactic acid) (L = PLA), mol. wt. 43,200, by an emulsification and solvent evaporation technique. Phenobarbitone (PB) was used as a reference drug, (core to polymer ratio, 1:1). Both the o/w and w/o emulsion system were investigated in order to study

A novel hydroxyapatite (HAp)/poly(L-lactic acid) (PLLA) nanocomposite nonwoven fabric, which was coated and mixed with calcined HAp nanocrystals, and has submicron-sized dimples on its surface, was fabricated. First, HAp-mixed PLLA fabric was prepared by electrospinning a HAp nanocrystal dispersion

Mineralized nanofibrous scaffolds have been proposed as promising scaffolds for bone regeneration due to their ability to mimic both nanoscale architecture and chemical composition of natural bone extracellular matrix. In this study, a novel electrodeposition method was compared with an extensively

The attraction of female Aedes aegypti to single compounds and binary compositions containing L-lactic acid and an additional saturated compound from a set of ketones, sulfides, and chloroalkanes was studied using a triple-cage dual-port olfactometer. These chemical classes were studied because of

A series of rare-earth metal complexes stabilized by different amine bridged bis(phenolate) ligands were synthesized and well characterized. Their catalytic performances for the ring-opening polymerization of l-lactic acid O-carboxyanhydride (l-lacOCA) and l-lactide were explored. Sequential

The optimization of tamoxifen citrate entrapment and its release from biodegradable poly(d,l) lactic acid nanoparticles are prepared by modified spontaneous emulsification solvent diffusion method. Since the addition of tamoxifen citrate induces the formation of drug crystals from nanoparticle

In this paper, hybrid inorganic-organic core-shell hollow microspheres, made of poly(L-lactic acid) (PLLA) and biomimetic nano apatites (HA), were prepared from biodegradable and biocompatible substances, suitable for bone tissue applications. Preparation is started from Pickering emulsification,

The kinetics of solvent removal in microsphere preparation and their effect on the morphology and release characteristics of paclitaxel-loaded PLLA microspheres were determined. Microspheres were analyzed by SEM and DSC and in vitro paclitaxel release was monitored by HPLC. During manufacture,

Solvent evaporation/extraction method is widely used for core-shell microspheres fabrication. However, the solvent evaporation rate, as an essential factor for polymers phase separation, is difficult to control which results in failure of complete phase separation between polymers. At the present

Biocompatible, biodegradable and bioactive nanocomposite (NC) scaffolds with well-defined interconnected porous structures have attracted increasing attention in bone tissue engineering. In this work, we develop a facile method to fabricate poly(l-lactic acid)-modified hydroxyapatite

Hydroxyapatite (HAp) nanoparticle-coated micrometer-sized poly(l-lactic acid) (PLLA) microspheres were fabricated via a "Pickering-type" emulsion route in the absence of any molecular surfactants. Stable oil-in-water emulsions were prepared using 40 nm HAp nanoparticles as a particulate emulsifier

In this report, we present a facile approach to produce biodegradable polymeric microparticles with uniform sizes and controllable morphologies by blending hydrophobic poly(D, L-lactic-co-glycolide) (PLGA) and amphiphilic poly(D,L-lactic acid)-b-poly(ethylene glycol) (PLA-b-PEG) in microfluidic