UV Polymerization of Methacrylates—Preparation and Properties of Novel Copolymers

Abstract

More environmentally friendly polymeric materials for use in corrosive conditions were obtained in the process of UV polymerization of terpene methacrylate monomers: geranyl methacrylate and citronellyl methacrylate and the commercially available monomer methyl methacrylate. Selected properties (solvent resistance, chemical resistance, glass transition temperature, thermal stability, and decomposition course during heating) were evaluated. It was found that the properties of the materials directly depended on the monomer percentage and the conditioning temperatures used. An increase in the geranyl or citronellyl methacrylate monomer content in the copolymers reduced the solubility and chemical resistance of the materials post-cured at 50 °C. The samples post-cured at 120 °C were characterized by high resistance to polar and non-polar solvents and the chemical environment, regardless of the percentage composition. The glass transition temperatures for samples conditioned at 120 °C increased with increasing content of methyl methacrylate in the copolymers. The thermal stability of copolymers depended on the conditioning temperatures used. It was greater than 200 °C for most copolymers post-cured at 120 °C. The process of pyrolysis of copolymers led to the emission of geranyl methacrylate, citronellyl methacrylate, and methyl methacrylate monomers as the main pyrolysis volatiles.

Functionalization of Polymer Networks to Target Trans‐Resveratrol in Winemaking Residues Supported by Statistical Design of Experiments

“…[ 8,9 ] In this perspective, UV irradiation seems advantageous to enhance the molecular recognition of the MIPs in a trade‐off with the polymerization extent. As a matter of fact, the technique of photopolymerization has already been used to synthesize methacrylate‐based polymers [ 10 ] and a gel polymer electrolyte based on polyethylene oxide [ 11 ] among other materials. [ 12 ]…”

“…[8,9] In this perspective, UV irradiation seems advantageous to enhance the molecular recognition of the MIPs in a trade-off with the polymerization extent. As a matter of fact, the technique of photopolymerization has already been used to synthesize methacrylate-based polymers [10] and a gel polymer electrolyte based on polyethylene oxide [11] among other materials. [12] Thus, joining the techniques of molecular imprinting and photopolymerization, one can theoretically form a tailor-made adsorbent capable to retain a specific compound in a selective manner.…”

A concise review of dental sealants in caries management

“…Light-cured resin sealant requires an external light source to imitate the polymerisation. Photo-initiators in the resin sealant absorb light radiation, dissociating into free radicals, and start the polymerisation process ( 20 ). The external light source could be ultraviolet or visible light.…”

Radical polymerisation and thiol–ene post-polymerisation functionalisation of terpenoid acrylates in conventional and renewably sourced organic solvents

“…Worzakowska et al used UV-photoinitiated polymerization to synthesise poly(geranyl acrylate) and poly(citronellyl acrylate) from the naturally-occurring terpenoids citronellol and geraniol, respectively, as well as methacrylate equivalents. 9–11 Worzakowska also reported the synthesis of more advanced polymer structures, in the form of starch- graft -poly(neryl acrylate) and starch- graft -poly(geranyl acrylate). 12 These examples demonstrate the potential of terpenoid-based acrylic analogues for industrial purposes.…”