The invention provides a fibre, film or foam comprising a plasticizer and a chargedclaylinked gel (A), said charged claylinked gel (A) comprising clay nanoparticles(C) which are crosslinked by a charged polymer (A') such that any particularclay nanoparticle is linked to at least one other clay nanoparticle by said chargedpolymer (A'). Methods for producing the fibres, film and foam are also provided.
