Influence of Synthesis Processes on the Properties of PVAc-MMT-STAB Exfoliated Nanocomposites

Abstract

Five different processes were designed based on the polymerization time and water amount to investigate their influence on the properties of exfoliated nanocomposites synthesized by vinyl acetate (VAc) and montmorillonite-octadecyl trimethyl ammonium bromide (MMT-STAB). The violent stirring, low MMT-STAB content, high polymerization temperature, favorable polymerization time and suitable water amount were very important. PVAc-MMT-STAB had high static tensile and good dispersion. PVAc's linear macromolecular chains were formed in MMT-STAB layers that was exfoliated into layers or sheets of nanoparticles and dispersed randomly. They dispersed together to form the structures of “Strawberry,” “Swallow,” “Tactoids,” “Half Core-Shell” and “Similar Core-Shell”.

Keywords:

• Particles
• PVAc-MMT-STAB
• Static tensile
• Structure
• Synthesis process

ACKNOWLEDGMENTS

The authors are grateful for the financial support of the National Nature Science Foundation of China (30930074).

Notes

Note: Each data in this table was averaged from 20 sets of results.