In situ emulsion polymerization and characterization of poly(butyl acrylate‐co‐methyl methacrylate)/silica nanosystems

Abstract

In this study influence of monomer ratio, butyl acrylate (BA), and methyl methacrylate (MMA) as well as silica nanofiller morphology (pyrogenic and colloidal) and concentration on the emulsion particle size distribution and properties of polyacrylate film (PA) synthesized by in situ emulsion polymerization were investigated. The ratios of the monomers BA/MMA were 100/0, 70/30, 50/50, 30/70, 0/100 and the filler concentration 0–10.0 mass%. PA nanocomposite films were characterized by using thermogravimetric analysis, differential scanning calorimetry, and tensile test. Research has shown that monomer ratio has significant influence on glass transition temperature (Tg). The addition of both types of silica filler, pyrogenic and colloidal, has no effect on Tg. Thermogravimetric analysis showed that systems with higher BA fraction have better thermal stability than systems with higher MMA fraction. Addition of the both type of silica nanofiller enhanced thermal stability of PAs, however, systems with colloidal silica are more stable. Pyrogenic silica and higher amounts of colloidal silica nanofiller increased PA emulsion particle size up to several micrometers. Addition of higher amounts of colloidal silica improved mechanical properties compared to the neat PA matrix. POLYM. ENG. SCI., 53:2292–2298, 2013. © 2013 Society of Plastics Engineers

The effect of concentration and silica surface modification on the poly(butyl acrylate-co-methyl methacrylate) properties

“…Therefore, interactions at the matrix/filler interface due to the modification of silica surface have no effect on the T g . T g of the PA1silica systems prepared in this study are for $4°C lower than the T g of PA1silica systems prepared in our previous work (Buhin et al, 2013). It is presumed that the reason of a lower T g is higher amount of anionic emulsifier which behaves as a plasticizer.…”

Preparation of poly(methyl methacrylate)‐Silica nanoparticles via differential microemulsion polymerization and physical properties of NR/PMMA‐SiO2 hybrid membranes

“…The addition of inorganic fillers into polymer matrixes is well known as being a beneficial way to improve the polymer properties such as mechanical, thermal, optical, and electrical properties . Polymer nanomaterials are widely used in many applications such as polymer‐coated inorganic particles, solid barriers, hybrid membranes, and drug carriers due to their good processability and properties.…”

Effect of pH and zeta potential of Pickering stabilizing magnetite nanoparticles on the features of magnetized polystyrene microspheres

“…[ 11 ] In addition, the broad combination of monomer phases with solid particles in Pickering emulsion and possibility to manage the size of droplets afford a versatile tool for preparation of a wide range of composites, for example, polyaniline/CeO 2, [ 12 ] fluorinated polyacrylates/cellulose nanocrystals, [ 13 ] polystyrene(PS)/SiO 2, [ 14,15 ] poly(methyl methacrylate)/laponite, [ 16 ] and poly(methyl methacrylate)/ SiO 2. [ 17,18 ]…”