title: Tunable thermal and flame response of phosphonated oligoallylamines layer by layer assemblies on cotton.
abstract: In the present paper we have demonstrated how the change of the layer by layer deposition parameters can influence the final properties of cotton fabrics in terms of coating morphology, thermal stability and flammability. To this aim, novel synthetized oligoallylamines and phosphonated oligoallylamines have been assembled on the surface of cotton exploiting different molecular weights and pH conditions. Low molecular weights have yielded an incomplete "island growth" coating while high molecular weight resulted in a homogeneous coating which thickness was controlled by the adopted pH. Both low and high molecular weight assemblies induced a reduction of the cellulose decomposition temperatures that was, conversely, delayed by coatings assembled at pH=10. All assemblies were able to improve cotton flammability by suppressing the afterglow phenomenon; the best results in terms of flame spread and final residue have been achieved by high molecular weight assemblies.
authors.affiliation: Dipartimento di Scienza Applicata e Technologia, Politecnico di Torino, sede di Alessandria, Viale Teresa Michel 5, 15121 Alessandria, Italy. Electronic address: federico.carosio@polito.it.
authors.forename: Federico
authors.initials: F
authors.lastname: Carosio
authors.affiliation: Institut Charles Gerhardt UMR 5253 (Université de Montpellier II, Université de Montpellier I, Centre National de Recherche Scientifique and Ecole Nationale Supérieure de Chimie de Montpellier), IAM, Rue de l'école normale, 34296 Montpellier cedex 5, France.
authors.forename: Claire
authors.initials: C
authors.lastname: Negrell-Guirao
authors.affiliation: Dipartimento di Scienza Applicata e Technologia, Politecnico di Torino, sede di Alessandria, Viale Teresa Michel 5, 15121 Alessandria, Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Di Blasio
authors.affiliation: Dipartimento di Scienza Applicata e Technologia, Politecnico di Torino, sede di Alessandria, Viale Teresa Michel 5, 15121 Alessandria, Italy.
authors.forename: Jenny
authors.initials: J
authors.lastname: Alongi
authors.affiliation: Institut Charles Gerhardt UMR 5253 (Université de Montpellier II, Université de Montpellier I, Centre National de Recherche Scientifique and Ecole Nationale Supérieure de Chimie de Montpellier), IAM, Rue de l'école normale, 34296 Montpellier cedex 5, France.
authors.forename: Ghislain
authors.initials: G
authors.lastname: David
authors.affiliation: Dipartimento di Scienza Applicata e Technologia, Politecnico di Torino, sede di Alessandria, Viale Teresa Michel 5, 15121 Alessandria, Italy.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Camino
mesh_terms: D032561:Cotton Fiber; D005411:Flame Retardants; D006358:Hot Temperature; D006863:Hydrogen-Ion Concentration; D008422:Materials Testing; D008855:Microscopy, Electron, Scanning; D063065:Organophosphonates / Q000737:chemistry*; D011073:Polyamines / Q000737:chemistry*; D012996:Solutions; D013784:Textiles; D013818:Thermogravimetry
chemical_list: D005411:Flame Retardants; D063065:Organophosphonates; D011073:Polyamines; D012996:Solutions; C063994:polyallylamine
keywords: Cotton; Flame retardancy; Layer by layer; Thermal stability