Multifunctional benzoin derivatives based macrophotoinitiators: Synthesis, inorganic fillers modification, and fabrication of composite materials

Abstract

Photopolymer composites are the materials with wide application potential in paints and varnishes, diverse lithographic processes, electronics, medicine, and so forth. Here a new approach to the synthesis of macrophotoinitiators (MPIs) were developed and their effective application for curing polymer composites after immobilization on the surface of diverse mineral fillers was demonstrated. The MPIs were synthesized by reaction of benzoin or 3‐hydroxy‐1,2‐diphenyl‐2‐(propan‐2‐yloxy)propan‐1‐one as a photodissociating species with a copolymer of maleic anhydride with methyl methacrylate as carrier. Chemical structure of MPIs and the content of the tethered photoinitiating moieties were determined using 1NMR‐, IR‐, and UV‐spectroscopies. Photolysis of MPIs was investigated in details using a spot‐light curing system. It was demonstrated that MPIs are effective surface modifiers of mineral fillers, such as titanium dioxide, zinc oxide, and nanohydroxyapatite; and behave as effective photoinitiators. The benefits of using the fillers surface‐modified by MPIs in photo‐curable polymer composites were discussed.

Impact of the functionalized clay nanofillers on the properties of the recycled polyethylene terephthalate nanocomposites

“…1 Additives, especially nanofillers, as well as the fabrication methods of composites, play a crucial role in polymer nanocomposite technologies, enabling the creation of materials with improved properties. [2][3][4][5][6][7][8][9][10] The nanotechnological approach not only includes adding nanofillers to the polymer matrix but also, more importantly, involves examining how the polymer matrix interacts with the extremely developed surfaces of nanofillers. Nanofillers of different types, both natural and functionalized, can be used to make polymer composites.…”

“…In the 1990s, nanotechnology was originally presented as a brand‐new technique for enhancing the characteristics of polymer composites 1 . Additives, especially nanofillers, as well as the fabrication methods of composites, play a crucial role in polymer nanocomposite technologies, enabling the creation of materials with improved properties 2–10 . The nanotechnological approach not only includes adding nanofillers to the polymer matrix but also, more importantly, involves examining how the polymer matrix interacts with the extremely developed surfaces of nanofillers.…”