Abstract

Herein, the preparation of print paste formulation containing the PDA (Polydiacetylene) polymer has been investigated for the first time. Screen printing method was employed to apply the prepared print paste on cellulose ENMs, and the Electrospinning method was used to fabricate cellulose acetate ENM followed by its deacetylation to prepare CEL ENMs. Distinct blue colour was developed with 254 nm UV-irradiation of printed CEL ENMs. We achieved good colour strength (K/S = 3.1) on printed ENMs, excellent colourfastness to washing (staining on multifibre: rating 5) and colourfastness to light (blue wool scale: rating 1). We found that the printed CEL ENMs can be effectively used as thermochromic sensor as it induced blue-to-red colour transition at 80 °C. Moreover, it has demonstrated solvatochromic property when incubated in NaOH. Mechanical properties (Tensile strength and wrinkle recovery), chemical structure (ATR-FTIR spectroscopy) as well as surface morphology (SEM analysis) of ENMs were also determined.

摘要

在此，首次研究了含有 PDA（聚二乙炔）聚合物的印花浆料配方的制备。采用丝网印刷法将制备的印花浆料涂在纤维素ENMs上，并采用静电纺丝法制备醋酸纤维素ENM，然后将其脱乙酰化制备CEL ENMs。对印刷的 CEL ENM 进行 254 nm 紫外线照射，可形成独特的蓝色。我们取得了良好的色彩强度（K/S = 3.1) 在印刷 ENM 上，优异的耐洗涤色牢度（多纤维染色：5 级）和耐光色牢度（蓝色羊毛等级：1 级）。我们发现印刷的 CEL ENMs 可以有效地用作热致变色传感器，因为它在 80°C 时会引起蓝色到红色的颜色转变。此外，它在 NaOH 中孵育时表现出溶剂致变色特性。还测定了 ENM 的机械性能（拉伸强度和皱纹恢复）、化学结构（ATR-FTIR 光谱）以及表面形态（SEM 分析）。