semi-interpenetrating polymer network (SIPN)
Polymer comprising one or more polymer networks and one or more linear or branched polymers characterized by the penetration on a molecular scale of at least one of the networks by at least some of the linear or branched macromolecules.
A SIPN is distinguished from an IPN because the @C01281@ linear or branched macromolecules can, in principle, be separated from the @C01281@ @P04742@(s) without breaking chemical bonds; it is a @P04736@.
PAC, 2007, 79, 1801. 'Definitions of terms relating to the structure and processing of sols, gels, networks, and inorganic-organic hybrid materials (IUPAC Recommendations 2007)' on page 1815 (