A model filler network in nanocomposites prepared by in situ silica filling and peroxide cross-linking in natural rubber latex

作者：Tohsan Atitaya; Kishi Ryota; Ikeda Yuko^*

来源：Colloid and Polymer Science, 2015, 293(7): 2083-2093.

DOI：10.1007/s00396-015-3586-8

• Natural rubber latex
• In situ silica
• Filler network
• Peroxide cross-linking
• Dynamic mechanical properties

Preparation and characteristics of model filler networks in nanocomposites are reported for development of rubber science. The nanocomposites were prepared via a sol-gel reaction in natural rubber (NR) latex using tetraethoxysilane followed by a peroxide cross-linking reaction in the liquid state employing a casting method. The filler network structure was formed in the NR matrix, even though the silica content was only 10 and 17 parts per one hundred rubber by weight. One of the important factors for the formation of the filler network was utilization of rubber particles in the latex as a template. Dynamic mechanical analysis revealed the significant characteristics of the filler network of silica particles in the rubber matrix: Higher and longer plateau regions of storage modulus and dissipation loss modulus in the low frequency region were observed in the in situ silica-filled nanocomposites compared with conventionally prepared nanocomposites. This was mainly ascribed to a strong filler-filler interaction.

• 出版日期2015-7