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Polysiloxanes

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Encyclopedia of Polymeric Nanomaterials

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Definition

Polysiloxane is an inorganic polymer, which consists of siloxane bonding in the main chain [1]. “Inorganic polymer” is a polymer, which consists of non-carbon element or elements in the main chain. “Siloxane bonding” means the chemical bonding, which consists of silicon-oxygen-silicon catenation.

Polysiloxane is formed by a connection of many unit structures to be a high-molecular-weight compound. When the number of repeating unit is not so high, the compound is named as oligosiloxane. The number of repeating unit to define poly- and oligosiloxanes is unclear.

Structural Unit of Siloxanes

The main chain of siloxanes is composed of silicon and oxygen. Oxygen atom simply links two silicon atoms to form siloxane bonding. Because silicon is an element located at 14 group and third period, silicon has four valence electrons. The general structure of silicon is explained as Si(OSi) n R4-n where n is a numeral number 0, 1, 2, 3, or 4.

Monofunctional unit structure M, SiR3O1/2,...

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Authors and Affiliations

  1. Faculty of Science and Technology, Department of Pure and Applied Chemistry, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan

    Takahiro Gunji

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  1. Takahiro Gunji
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Correspondence to Takahiro Gunji .

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Editors and Affiliations

  1. Center for Fiber and Textile Science, Kyoto Institute of Technology, Matsugasaki, Sakyo-ku, Kyoto, Japan

    Shiro Kobayashi

  2. Max Planck Institute for Polymer Research, Mainz, Germany

    Klaus Müllen

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Gunji, T. (2015). Polysiloxanes. In: Kobayashi, S., Müllen, K. (eds) Encyclopedia of Polymeric Nanomaterials. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-29648-2_140

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