Caseins and hydrophobins as novel green flame retardants for cotton fabrics

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• 作者：Jenny Alongi ; Riccardo Andrea Carletto ; Francesca Bosco ; Federico Carosio ; Aless ; ro Di Blasio ; Fabio Cuttica ; Vincenza Antonucci ; Michele Giordano ; Giulio Malucelli
• 关键词：Cotton ; Green flame retardants ; Caseins ; Hydrophobins ; Flammability ; Combustion behaviour
• 刊名：Polymer Degradation and Stability
• 出版年：January, 2014
• 年：2014
• 卷：99
• 期：Complete
• 页码：111-117
• 全文大小：2457 K

文摘

Despite the use of toxic and not environmentally-friendly chemicals, some proteins derived from animal or microbial sources have been investigated as novel green flame retardants for cotton fabrics. In particular, phosphorus- and sulphur-rich proteins (i.e. caseins and hydrophobins) have been homogeneously deposited on cotton fabrics starting from protein aqueous suspensions/solutions. These surface treatments, based on the use of species able to favour the dehydration of cellulose instead of its depolymerization, have strongly enhanced the production of a thermally stable carbonaceous structure (char), hence significantly enhancing the flame retardancy of the fabrics, as assessed by thermogravimetry and flammability tests.