Studies on the adhesion between paper and low-density polyethylene 4. The influence of urea-formaldehyde

摘要

The influence of cationic urea-formaldehyde resin (C-UF) on the surface chemistry at the paper-LDPE interface was studied by means of FTIR. The differences in adhesion were explained by differences in chemical compositions as measured by FTIR. The adhesive strength increases with increasing concentration of cationic urea-formaldehyde. The adhesion between paper containing cationic C-UF and LDPE may be the sum of secondary forces; hydrogen bonds and covalent bonds with ion pair interaction caused by the cationic group.%Kationisen ureaformaldehydin vaikutusta pintakemiaan paperin ja LDPE:n rajapinnalla on tutkittu FTIR:llä. Adheesiomuu-tokset on selitetty kemiallisesta koostumuksesta johtuvilla eroilla. Ureaformaldehydimäärän noustua adhesiivinen lujuus on kasvanut. Kationista C-UF:ää sisältävän paperin ja LDPE:n välinen adheesio on mahdollisesti sekundääristen, vetysidosten ja kovalenttisten, sidosten sekä kationisen ionipariryhmän vuorovaikutusten summa.