Synthesis of UV‐cured acrylic–silica hybrid nanocomposites from dendritic acrylic oligomer and acrylic‐functionalized silica

Abstract

An acrylic–silica hybrid polymeric nanocomposite, comprising well‐distributed silica nanoparticles in acrylic matrix, has been synthesized at a markedly rapid rate from a dendritic acrylic oligomer (DAO) and an acrylic‐functionalized silica (A‐silica) via UV‐curing. A‐silica was made by functioning colloidal silica nanoparticles with 3‐methacryloxypropyltrimethoxysilane (MATMS) and DAO was formed by reacting 1,5‐diamino‐2‐methylpentane (MPMDA) with trimethylopropane triacrylate (TMPTA). The MATMS has been found either doubly or singly bonded to silica nanoparticles but not triply bonded, and the inclusion of MATMS into the siloxane network structure increases the size of silica nanoparticles. The well distribution of A‐silica and its good compatibility with DAO cause an increase in Td of the acrylic–silica hybrid material. Silica nanoparticles are too small to cause any significant light scattering, and do not have deleterious effects on transparency. The “hybrid‐on‐polyethylene terephathalate” films exhibited satisfactory hardness and surface roughness because of silica nanoparticles. The preparation as well as the characterization of the constituting species and the final hybrid material are described in detail. © 2008 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 46: 8149–8158, 2008

Photocured Nanocellulose Composites: Recent Advances

“…A special class of photopolymerized materials are nanocomposites that have been the subject of intense research efforts owing to expected property enhancement over their macroscopic analogues. These materials include a photopolymer and a filler or reinforcement particles with dimensions below 100 nm, and examples include composites with nanosilica, − carbon nanotubes, − clays, − layered phosphate, , titania, sol–gel silica, graphene, and graphite oxide nanoplatelets . Silica-based UV-cured nanocomposite materials are, for instance, used to create coatings with high scratch and mar resistance. − There is, however, far less literature on UV-cured cellulose composites (Figure ), with a mere total of less than 200 peer-reviewed papers since initial studies in the 1980s, and the field hardly represents 0.5% of the total work produced on cellulose-based composites.…”

“…These materials include a photopolymer and a filler or reinforcement particles with dimensions below 100 nm, and examples include composites with nanosilica, − carbon nanotubes, − clays, − layered phosphate, , titania, sol–gel silica, graphene, and graphite oxide nanoplatelets . Silica-based UV-cured nanocomposite materials are, for instance, used to create coatings with high scratch and mar resistance. − There is, however, far less literature on UV-cured cellulose composites (Figure ), with a mere total of less than 200 peer-reviewed papers since initial studies in the 1980s, and the field hardly represents 0.5% of the total work produced on cellulose-based composites. A notable increase seems to have gradually developed in recent years, presumably to combine the advantages of a biobased resource and an environmentally friendly process and promote this class of materials as a key enabling approach toward sustainable materials and technologies.…”

Preparation and characterization of UV‐cured hybrid coatings by triethoxysilane‐modified dimethacrylate based on bisphenol‐s epoxy

“…Organic–inorganic hybrid materials offer the opportunity to combine both organic polymers (elasticity, processability) and inorganic solids (hardness, chemical inertness, and thermal resistance) 15. Sol–gel method was often employed to create these materials 16–20.…”