Miscellaneous Polymerizations

Most monomers contain only one polymerizable group. There are some monomers with two polymerizable groups per molecule. Polymerization of such monomers can lead to more than one polymer structure. The polymerization of 1,3-dienes, of large industrial importance, is discussed in Sec. 8-6. l-Substituted-l,2-dienes (allenes) undergo polymerization through both the substituted and unsubstituted double bonds 

Various types of initiators have been studied, including ionic, radical, and coordination (Chap. 8) [Ghalamkar-Moazzam and Jacobs, 1978 Leland et al., 1977]. Polymerization through the unsubstituted double bond is the predominant reaction. 

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Miscellaneous polymerization and condensation reactions have been reported in some patents as generating hydrocarbons from methane, fvir example, methane when heated at I. OO C on AljOs MgAljO (impregnated wjth Mg. Cr and Ft) givesethene and benzene [281. 

Over the years, a variety of stationary matrices have been investigated. Most notably, these solid supports are composed of silica, polystyrene, or miscellaneous polymeric lattices. 

Miscellaneous Polymerization over Solid Acids and Bases... 

Deposition on fibers or fabrics Vapor phase deposition Deposition in nanoscale matrices Photochemically initiated polymerization Enzyme-catalyzed polymerization Polymerization using electron acceptors Miscellaneous polymerization methods Routes to more processible polyanilines Emulsion polymerization Colloidal polyaniline dispersions Substituted polyanilines... 

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