ABSTRACT: In this work, dihydro-5-hydroxyl furan-2-one (2H-HBO), a renewable-sourced chemical containing the hydroxyl functionality, is converted into its acrylic counterpart for the first time through a green chemical procedure using methacrylic anhydride. This newly synthesized acrylic monomer is able to be polymerized using different techniques such as bulk, solution, and emulsion polymerization. The ability of this monomer to copolymerize with other commercially available acrylates is … Continue reading Synthesis of Bioacrylic Polymers from Dihydro-5-hydroxyl furan-2- one (2H-HBO) by Free and Controlled Radical Polymerization

Alkali-soluble resins (ASRs) are a type of electrosteric emulsifiers of high interest because they can profitably improve the features of waterborne dispersions. In this work, they have been synthesized in-situ through a one-pot approach and they have been used as polymeric surfactants for a second emulsion polymerization step in the same reactor. This strategy provides some advantages compared to other polymerization techniques, like the intensification … Continue reading One-Pot Synthesis of Waterborne Polymeric Dispersions Stabilized with Alkali-Soluble Resins

Series of latexes from acrylic monomers (made from olive, soybean, linseed, and hydrogenated soybean oils), significantly different in terms of fatty acid unsaturation were synthesized using miniemulsion copolymerization with styrene. The number-average molecular weight and the glass transition temperature of the resulting copolymers with high levels of bio-based content (up to approximately 60 wt%) depend essentially on the amount of unsaturation (the number of double … Continue reading Versatile Platform for Controlling Properties of Plant Oil-Based Latex Polymer Networks

To prepare modified silica nanospheres for emulsion polymerization, a new agglomeration-free change of dispersion media has been developed. Nanosized silica spheres were synthesized by the Stöber method and directly modified with a silane coupling agent. To prepare these particles for subsequent polymerization, the dispersion medium was changed in a two-step process from ethanol to water without agglomeration of the particles. The emulsion polymerization leads to … Continue reading Agglomeration-Free Preparation of Modified Silica Nanoparticles for Emulsion Polymerization—A Well Scalable Process

Poly(methyl methacrylate)/magnetite (PMMA/Fe3O4) nanocomposites were prepared with a two–step technique involving sonication. Fe3O4 nanoparticles were synthesized by ultrasound–assisted co–precipitation, and then PMMA/Fe3O4 (1–5 wt%) nanocomposites were synthesized via ultrasound–assisted in–situ emulsion polymerization. Best physical properties of the nanocomposites for different Fe3O4loadings were: Tensile strength (2 wt%) = 40.28 MPa, Young’s modulus (2 wt%) = 2.4 GPa, percentage elongation (2 wt%) = 2.24%, glass transition temperature (2 wt%) … Continue reading Ultrasound-assisted synthesis and characterization of magnetite nanoparticles and poly(methyl methacrylate)/magnetite nanocomposites

The introduction of non-modified kraft LignoBoost® lignin (KL) to produce polymer hybrid latex has received much attention in recent years because it is derived from renewable resources. The focus of this work is to develop a polymer hybrid latex by emulsion and miniemulsion copolymerization of styrene with n-butyl acrylate and methacrylic acid in the presence of different concentrations of KL furnished by the pulp and paper … Continue reading Effect of unmodified kraft lignin concentration on the emulsion and miniemulsion copolymerization of styrene with n-butyl acrylate and methacrylic acid to produce polymer hybrid latex

Fluorinated surfactants, especially perfluorooctanoic acid (PFOA) and its derivatives, are frequently used in many industries. However, they are harmful to human health and the environment. While surfactants with only short fluorocarbon chains have lower toxicity, their physical properties need improvement. In this study, we synthesized novel anionic fluorinated surfactants with two short fluorocarbon chains per molecule, using the condensation reaction of fluoroalcohol and fluoroalkyl glycidyl … Continue reading Synthesis and surface active properties of novel anionic surfactants with two short fluoroalkyl groups

The photopolymerization of styrene in emulsion is achieved in a conventional double wall reactor equipped with a LED ribbon coiled around the external glass wall. Styrene mixed to acridine orange is added to the water phase containing sodium dodecyl sulfate, a water-soluble N-heterocyclic carbene-borane and disulfide, and irradiated. Highly stable latexes are obtained, with particles up to a diameter of 300 nm. The ability to … Continue reading Visible-light Emulsion Photopolymerization of Styrene