An experimental study on the synthesis of poly(vinyl pivalate)-based magnetic nanocomposites through suspension polymerization process

Styrene/Lignin-Based Polymeric Composites Obtained Through a Sequential Mass-Suspension Polymerization Process

“…15 and Table 7, the higher the initiator concentration, the lower the average molar masses of the final polymer. The observed effect of BPO on the average molar masses is in agreement with the findings of other investigators reported elsewhere [50]. In general, styrene/lignin-based polymers exhibited higher average molecular masses in comparison to the values observed for polystyrene homopolymer when similar amounts of BPO are considered, which reflects the ability of lignin to quench the radical polymerization, as the lignin molecules are oxidized by a fraction of BPO initiator radicals, allowing the effective growth of the polymeric chains.…”

Drug Micro-Carriers Based on Polymers and Their Sterilization

“…As a matter of fact, a very stable colloidal dispersion is generally obtained through ultrasonication or high shear devices that might be combined with a surfactant and a hydrophobic agent, which acts as a costabilizer in order to lead to the formation of droplets lying in the interval from 50 to 500 nm, exhibiting very narrow particle size distributions. Generally, highpressure homogenizers or sonicators are necessary when the formation of nanometric droplets requires a large amount of energy, which results from the application of high shear rates on the oil-in-water medium, leading efficiently to the breakage of the larger droplets to produce small droplets [217][218][219][220][221][222][223].…”

“…Additionally, the release rate also exhibited dependence on the particle size. For this reason, the main parameters of the emulsification stage must be optimized to guarantee the polymer carriers with suitable morphological features [217,219,225].…”

Well Defined Poly(Methyl Methacrylate)-Fe3O4/Poly(Vinyl Pivalate) Core–Shell Superparamagnetic Nanoparticles: Design and Evaluation of In Vitro Cytotoxicity Activity Against Cancer Cells

“…In biomedical applications, the encapsulation of nanoparticles with polymeric matrices ensures their stability in biological media, provides functionality, protects and prevents agglomeration [10] and results in increased local drug concentrations, enabling their use for targeted delivery of therapeutic agents, reducing toxic effects in cells or tissues healthy [11,12]. The polymeric matrices can be prepared from synthetic or natural polymers, obtaining colloidal particles by several synthetic routes, including emulsion [13][14][15], suspension [16][17][18], and miniemulsion polymerization [19][20][21].…”