Prathapan Ragesh, Ghosh Anik Kumar, Knapp André, Vijayakumar Amruthalakshmi, Bogari Nawaf Nasir Jamil, Abraham Brett David, Al-Ghabkari Abdulhameed, Fery Andreas, Hu Jinguang
Department of Chemical and Petroleum Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada.
Institute of Physical Chemistry and Polymer Physics, Leibniz Institute of Polymer Research, Dresden 01069, Germany.
ACS Appl Bio Mater. 2020 Nov 16;3(11):7898-7907. doi: 10.1021/acsabm.0c01030. Epub 2020 Oct 19.
A scalable method for the assembly of oriented bacterial cellulose (BC) films is presented based on using wrinkled thin silicone substrates of meter-square size as templates during biotechnological syntheses of BC. Control samples, including flat templated and template-free bacterial cellulose, along with the oriented BC, are morphologically characterized using scanning electron microscopy (SEM). Multiple functional properties including wettability, birefringence, mechanical strength, crystallinity, water retention, thermal stability, ., are being characterized for the BC samples, where the wrinkling-induced in situ BC alignment not only significantly improved material mechanical properties (both strength and toughness) but also endowed unique material surface characteristics such as wettability, crystallinity, and thermal stability. Owing to the enhanced properties observed, potential applications of wrinkle templated BC in printing and cell culture are being demonstrated as a proof of concept, which renders their approach promising for various biomedical and packaging applications.
本文提出了一种可扩展的方法，用于制备取向细菌纤维素（BC）膜，该方法基于在BC的生物技术合成过程中，使用平方米尺寸的褶皱薄硅酮基板作为模板。使用扫描电子显微镜（SEM）对包括平面模板化和无模板细菌纤维素在内的对照样品以及取向BC进行形态表征。正在对BC样品的多种功能特性进行表征，包括润湿性、双折射、机械强度、结晶度、保水性、热稳定性等。其中，由褶皱诱导的原位BC排列不仅显著改善了材料的机械性能（强度和韧性），还赋予了独特的材料表面特性，如润湿性、结晶度和热稳定性。由于观察到性能得到增强，作为概念验证，展示了皱纹模板化BC在印刷和细胞培养中的潜在应用，这使其方法在各种生物医学和包装应用中具有广阔前景。
