TY  - JOUR
PY  - 2015//
TI  - Permanent flame retardant finishing of textiles by allyl-functionalized polyphosphazenes
JO  - ACS applied materials and interfaces
A1  - Mayer-Gall, Thomas
A1  - Knittel, Dierk
A1  - Gutmann, Jochen Stefan
A1  - Opwis, Klaus
SP  - 9349
EP  - 9363
VL  - 7
IS  - 18
N2  - Despite their excellent flame retardant properties, polyphosphazenes are currently not used as flame retardant agents for textile finishing, because a permanent fixation on the substrate surface has failed so far. Here, we present the successful synthesis and characterization of a non-combustible and foam-forming polyphosphazene derivative, that can be immobilized durably on cotton and different cotton/polyester blended fabrics using photo-induced grafting reactions. The flame retardant properties are improved, a higher limiting oxygen index is found and the modified textiles pass several standardized flammability tests. As flame retardant mechanism a synergistic effect between the immobilized polyphosphazene and the textile substrate was observed. The polyphosphazene finishing induces an earlier decomposition of the material with a reduced mass loss in thermogravimetric analysis. The decomposition of cotton and polyester leads to the formation of phosphorus oxynitride, which forms a protecting barrier layer on the fiber surface. In addition, the permanence of the flame retardant finishing was proven by laundry and abrasion tests.<p />  <p>Language: en</p>
LA  - en
SN  - 1944-8244
UR  - http://dx.doi.org/10.1021/acsami.5b02141
ID  - ref1
ER  -