Synthesis, characterization and copolymerization of two novel imide ring and silane containing vinylic macromonomers with styrene/butyl acrylate

The objective of the present work was the development and characterization of two novel silane and imide ring containing vinylic macromonomers, N-(4-trimethylsiloxyphenyl) maleimide (TSPM) and N-(4-trimethylsiloxyphenyl) pyromellitylimido-N′-phenylacrylate (TSPA), and their emulsion copolymerization in the presence of styrene (St) and butyl acrylate (BA) monomers. The purity and structural conformation of TSPM and TSPA were ascertained from elemental analysis, FT-IR and NMR spectral studies. Thermal properties of the copolymers were studied by using differential scanning calorimetry (DSC) and thermo gravimetric analysis (TGA). The morphology of copolymers was investigated by transition electron microscopy (TEM) and then the effect of TSPM and TSPA concentrations on the water absorption ratio was examined. The results show that compared with the film based on the pure P (St-co-BA) copolymers, the water-resistance of the emulsion films made of TSPM and/or TSPA was greatly improved.

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► TSPM and TSPA have been prepared with a functional group, double bond of vinyl.
► Copolymers with TSPM or TSPA have good storage stability and can be used as binders.
► TSPM or TSPA improves the water resistance and caused heat a stability and low Tg.
► The transparency of the films reduced as the TSPM or TSPA concentration increased.