Abstract

Novel hybrid organic–inorganic network materials have been generated based on poly(propylene oxide) (PPO) and tetramethoxysilane (TMOS). The PPO source chosen for this study was the family of JEFFAMINE®s often employed as epoxy curing agents. These materials were end–functionalized with trialkoxysilane groups which later were exploited in the sol–gel reaction. The sol–gel variables of water and acid catalyst concentration had little influence on the final structure and properties of the resulting network materials for the ranges probed. Increasing the TMOS content, however, generated a structure that angle X-ray scattering revealed a correlation length associated with a silicate phase separated by PPO chains, which increased with PPO molecular weight, as expected.

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