Physics Research Institute, National Research Centre, 33 El-Bohouth St., Dokki, Giza 12622, Egypt.
Faculty of Industrial Education, Helwan University, Saray-El Qoupa, El Sawah Street, 11281 Cairo, Egypt; Nanotechnology Research Center (NTRC), The British University, Suez Desert Road, Cairo 11837, Egypt.
Carbohydr Polym. 2022 Sep 1;291:119656. doi: 10.1016/j.carbpol.2022.119656. Epub 2022 May 25.
We study the microstructure, optical, thermal, dielectric, and mechanical properties of flexible oxidized cellulose (OC) films loaded with different mass fractions of cubic structure BiNaKTiO by blending solution technique and casting method. The films were characterized using infrared, X-ray diffraction, scanning electron microscopy, and UV-visible spectroscopy. The optical results confirmed the formation of crystalline bismuth sodium titanate/OC semiconductor films with a direct energy bandgap (3.002-3.276 eV) and have the ability for optoelectronic applications. The dielectric constant and dielectric loss of OC /BNKT film decreased obviously with increasing frequency. However, the ferroelectric state of the BNKT and its correlation with structure verified the existence of a relaxer behavior to this ratio. OC film with 20% dopped BNKT displayed energetic bactericidal activity against Gram-positive and Gram-negative bacteria. The presented study suggested that this film can be used as an antibacterial packaging material to diminish packaging's adverse environmental impacts with non-cytotoxicity.
我们研究了不同质量分数的立方结构 BiNaKTiO 负载在柔性氧化纤维素（OC）薄膜中的微观结构、光学、热学、介电和力学性能，采用混合溶液技术和浇铸法制备了薄膜。利用红外光谱、X 射线衍射、扫描电子显微镜和紫外可见光谱对薄膜进行了表征。光学结果证实了结晶铋酸钠钛/OC 半导体薄膜的形成，具有直接能隙（3.002-3.276 eV），并且具有光电应用的能力。OC/BNKT 薄膜的介电常数和介电损耗随着频率的增加明显降低。然而，BNKT 的铁电状态及其与结构的相关性证实了该比值存在松弛行为。掺杂 20% BNKT 的 OC 薄膜对革兰氏阳性菌和革兰氏阴性菌表现出了杀菌活性。本研究表明，该薄膜可用作抗菌包装材料，以减少包装对环境的负面影响，且无细胞毒性。
