Department of Chemistry, Newman College, Thodupuzha, Kerala 685584, India; School of Chemical Sciences, Mahatma Gandhi University, Kottayam, Kerala 686560, India.
School of Energy Materials, Mahatma Gandhi University, Kottayam, Kerala 686560, India.
Carbohydr Polym. 2022 Apr 15;282:119123. doi: 10.1016/j.carbpol.2022.119123. Epub 2022 Jan 12.
The unparalleled dependency on petroleum based sources urged the research community to focus on developing renewable products, among which nanocellulose based commodities stands at the zenith due to its abundance, biodegradability and biocompatibility. Nanocellulose in form of coatings, aerogels, hydrogels, films and membranes have its own space in the research platform. The different coating technologies like spray, bar, roller, dip and foam coating are currently employed for the fabrication. The profound surface hydroxyl groups on the cellulose helps to incorporate desired properties like antimicrobial or antioxidant activities, barrier properties, superhydrophobicity or superhydrophilicity as per the applications ranging from biomedical to material engineering. Yet, the chemistry of these coatings have to be precisely tuned for its commercialization since many factors play challenging roles while the fabrication process like adhesion, brittleness and barrier properties. The manuscript discusses these aspects of the nanocellulose based coatings along with its challenges and future perspectives.
对石油基资源的极度依赖促使研究人员专注于开发可再生产品，其中，纳米纤维素基产品因其丰富的资源、生物降解性和生物相容性而处于领先地位。纳米纤维素以涂层、气凝胶、水凝胶、薄膜和膜的形式在研究平台上有其自身的空间。目前采用的不同涂层技术包括喷涂、棒涂、辊涂、浸涂和泡沫涂覆。纤维素上丰富的羟基有助于根据从生物医学到材料工程等不同应用领域的要求，加入所需的特性，如抗菌或抗氧化活性、阻隔性能、超疏水性或超亲水性。然而，这些涂层的化学性质必须进行精确调整，才能实现商业化，因为在制造过程中，如附着力、脆性和阻隔性能等，许多因素都起着挑战性的作用。本文讨论了纳米纤维素基涂层的这些方面，以及它所面临的挑战和未来展望。
