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Facile preparation strategy of photochromic dual-mode authentication nanofibers by solution blowing spinning of cellulose nanowhiskers-supported polyacrylonitrile
Cellulose ( IF 4.9 ) Pub Date : 2022-06-11 , DOI: 10.1007/s10570-022-04645-z
Tawfik A. Khattab , Mehrez E. El-Naggar , Abdullah G. Al-Sehemi , Mehboobali Pannipara , M. A. Abu-Saied , Manal F. Abou Taleb

Smart nanofibers have been used to create sensing tools for various purposes, such as anticounterfeiting. However, electrospinning produces nanofibers at a low yield, high cost, and requires high voltage. The recently invested solution blowing spinning method generates nanofibers at low cost and high yield without the need for high voltage. Moreover, the efficiency of nanofibrous coatings has been enhanced and strengthened by cellulose nanowhiskers (CNWs). Fluorescent photochromism is an interesting technique for the preparation of dual-mode security encoding authentication materials. Herein, novel photochromic emissive nanofibrous films composed of CNW-supported polyacrylonitrile (PAN) nanocomposite incorporated with alkaline earth activated aluminate nanoparticles (AEAN) was prepared to present security authentication films with optical photo-responsiveness for anticounterfeiting applications. To create a colorless film, AEAN and CNW must be well-dispersed in the PAN-based composite. Nanofiber-coated paper sheets were analyzed by luminescence spectra to display a green emission at 527 nm. The photochromic nanofiber-coated sheets demonstrated strong reversibility under UV and daylight. The current advance can be reported as an efficient strategy to manufacture authenticated merchandise.



中文翻译:

纤维素纳米晶须负载聚丙烯腈溶液吹制法制备光致变色双模认证纳米纤维的简便方法

智能纳米纤维已被用于制造用于各种目的的传感工具,例如防伪。然而,静电纺丝以低产率、高成本和需要高电压生产纳米纤维。最近投资的溶液吹制纺丝方法以低成本和高产量生产纳米纤维,无需高压。此外,纤维素纳米晶须 (CNW) 提高和加强了纳米纤维涂层的效率。荧光光致变色是一种用于制备双模安全编码认证材料的有趣技术。在此处,制备了由 CNW 负载的聚丙烯腈 (PAN) 纳米复合材料与碱土金属活性铝酸盐纳米颗粒 (AEAN) 组成的新型光致变色发射纳米纤维薄膜,以提供具有光学光响应性的安全认证薄膜,用于防伪应用。为了制造无色薄膜,AEAN 和 CNW 必须在 PAN 基复合材料中充分分散。通过发光光谱分析涂有纳米纤维的纸片以在 527 nm 处显示绿色发射。光致变色纳米纤维涂层片材在紫外线和日光下表现出很强的可逆性。目前的进展可以被报告为制造经过验证的商品的有效策略。通过发光光谱分析涂有纳米纤维的纸片以在 527 nm 处显示绿色发射。光致变色纳米纤维涂层片材在紫外线和日光下表现出很强的可逆性。目前的进展可以被报告为制造经过验证的商品的有效策略。通过发光光谱分析涂有纳米纤维的纸片以在 527 nm 处显示绿色发射。光致变色纳米纤维涂层片材在紫外线和日光下表现出很强的可逆性。目前的进展可以被报告为制造经过验证的商品的有效策略。

更新日期:2022-06-12
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