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In Situ Generating CaCO3 Nanoparticles Reinforced Nonflammable Calcium Alginate Biocomposite Fiber
Langmuir ( IF 3.7 ) Pub Date : 2022-10-06 , DOI: 10.1021/acs.langmuir.2c01886 Lin Weng 1 , Xiaolin Zhang 2, 3
Langmuir ( IF 3.7 ) Pub Date : 2022-10-06 , DOI: 10.1021/acs.langmuir.2c01886 Lin Weng 1 , Xiaolin Zhang 2, 3
Affiliation
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Petroleum-based synthetic flame-proof fiber releases toxic volatile organic compounds in thermal decomposition process and has other problems, like tickling feeling and high density. A natural polysaccharide, calcium alginate, is an intrinsic fire-resistant biodegradable material, but its limited mechanical performance prevents it from being a practical flame-retardant fabric. To address this problem, Na2CO3 was doped into alginate spinning solution to obtain in situ generating CaCO3 nanoparticle-reinforced alginate fiber by microfluidic spinning technique. Comparative analysis illustrated that incorporation of 0.50% Na2CO3 into the fiber greatly improved its mechanical performance; meanwhile, in situ generated CaCO3 nanoparticles also throttled oxygen and heat flow in burning, endowing the fiber with excellent flame retardancy. The prepared composite fiber released less heat, smoke, and toxic volatile organic compounds in burning, which reduced the fire hazard. The formed residue char and pyrolysis products functioned as the physical barrier and displayed a synergistic effect to inhibit oxygen and heat transmission and impede the further combustion. All of the results demonstrate that the obtained fiber exhibits a good mechanical and flame-retardant performance, making it an ideal candidate as a fire-protection textile.
中文翻译：
原位生成CaCO3纳米颗粒增强不易燃海藻酸钙生物复合纤维
石油基合成阻燃纤维在热分解过程中会释放出有毒的挥发性有机化合物，并且存在发痒感和高密度等问题。天然多糖海藻酸钙是一种固有的防火生物降解材料，但其有限的机械性能使其无法成为实用的阻燃织物。针对这一问题，将Na 2 CO 3掺杂到海藻酸盐纺丝溶液中，通过微流控纺丝技术获得原位生成的CaCO 3纳米颗粒增强海藻酸盐纤维。比较分析表明，掺入0.50% Na 2 CO 3入纤维大大提高了其力学性能；同时，原位生成的CaCO 3纳米颗粒还抑制了燃烧过程中的氧气和热流，赋予纤维优异的阻燃性能。制备的复合纤维在燃烧时释放的热量、烟雾和有毒挥发性有机化合物较少，从而降低了火灾隐患。形成的残渣焦炭和热解产物起到物理屏障的作用，并显示出协同作用，抑制氧气和热量的传递，阻碍进一步燃烧。所有结果表明，所得纤维表现出良好的机械性能和阻燃性能，使其成为防火纺织品的理想选择。
更新日期：2022-10-06
中文翻译：
原位生成CaCO3纳米颗粒增强不易燃海藻酸钙生物复合纤维
石油基合成阻燃纤维在热分解过程中会释放出有毒的挥发性有机化合物，并且存在发痒感和高密度等问题。天然多糖海藻酸钙是一种固有的防火生物降解材料，但其有限的机械性能使其无法成为实用的阻燃织物。针对这一问题，将Na 2 CO 3掺杂到海藻酸盐纺丝溶液中，通过微流控纺丝技术获得原位生成的CaCO 3纳米颗粒增强海藻酸盐纤维。比较分析表明，掺入0.50% Na 2 CO 3入纤维大大提高了其力学性能；同时，原位生成的CaCO 3纳米颗粒还抑制了燃烧过程中的氧气和热流，赋予纤维优异的阻燃性能。制备的复合纤维在燃烧时释放的热量、烟雾和有毒挥发性有机化合物较少，从而降低了火灾隐患。形成的残渣焦炭和热解产物起到物理屏障的作用，并显示出协同作用，抑制氧气和热量的传递，阻碍进一步燃烧。所有结果表明，所得纤维表现出良好的机械性能和阻燃性能，使其成为防火纺织品的理想选择。
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