Department of Engineering and Applied Sciences, University of Bergamo, Viale Marconi 5, 24044, Dalmine, BG, Italy.
Department of Engineering and Applied Sciences, University of Bergamo, Viale Marconi 5, 24044, Dalmine, BG, Italy.
Carbohydr Polym. 2018 Sep 15;196:348-358. doi: 10.1016/j.carbpol.2018.05.012. Epub 2018 May 26.
In this paper, a carboxyl-functionalized organophosphorus oligomer was immobilized onto cotton fabrics using 1,2,3,4-butanetetracarboxylic acid as an environmentally-friendly binder, in the presence of sodium hypophosphite, used as a catalyst, and triethanolamine, which contributes to phosphorous-nitrogen synergism. Moreover, with the aim of reducing the formation of insoluble calcium salt during home laundering, due to the free carboxylic acid groups bound to the cotton fabric, the treated samples were recoated employing three sol-gel precursors, namely 3-aminopropyltriethoxysilane, tetraethoxysilane and 3-glycidyloxypropyltriethoxysilane. Samples were thoroughly characterized to understand the bonding between coatings and substrate, as well as the related surface morphology. The thermal behaviour was investigated by thermogravimetric analysis, flame and combustion tests. The results revealed that the treated fabrics were able to achieve self-extinction. Comparing to the untreated sample, tearing strength of PMIDA/BTCA/SHP fabric was reduced in both warp and weft directions, while fabrics coated with an additional sol-gel layer were affected more significantly.
本文采用 1,2,3,4-丁烷四羧酸作为环保型粘结剂，在次磷酸钠（作为催化剂）和三乙醇胺的存在下，将羧基官能化的有机磷低聚物固定在棉织物上，三乙醇胺有助于磷-氮协同作用。此外，为了减少由于与棉织物结合的游离羧酸基团在家庭洗涤过程中形成不溶性钙盐，对处理后的样品进行了再涂层，使用了三种溶胶-凝胶前体，即 3-氨丙基三乙氧基硅烷、四乙氧基硅烷和 3-缩水甘油氧基丙基三乙氧基硅烷。对样品进行了彻底的表征，以了解涂层与基底之间的结合以及相关的表面形貌。通过热重分析、火焰和燃烧测试研究了热行为。结果表明，处理后的织物能够实现自熄灭。与未处理的样品相比，PMIDA/BTCA/SHP 织物的经向和纬向撕裂强度都有所降低，而涂覆额外溶胶-凝胶层的织物受到的影响更为显著。
