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One type of this material is called an ionomer, which are copolymers in which a small number of the repeat units have attached ionic pendant groups. Another type of this material is a block copolymer, such as SBS rubber in which polybutadiene links are joined together by polystyrene clusters. More famous compounds that fit this description are PVC and polyethylene, and polypropylene can be made one by interspersing blocks of varying tacticity. All of them exhibit their unique properties when heated, as they undergo a de- linkage but do not change their chemical structure. FTP, identify this group of compounds comprising plastics that can be melted down and recast.  3
One type of this material is called an ionomer, which are copolymers in which a small number of the repeat units have attached ionic pendant groups.
thermoplastics