Modification and evaluation of natural polysaccharides and their application in fabric care

天然多糖的改性、评价及其在织物护理中的应用

• 批准号: 2878116
• 金额: --
• 依托单位: Newcastle University
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2878116
• 关键词: Modification; evaluation; natural; polysaccharides; their

The global impact of laundry detergent production on energy consumption and environmental conservation underscores the need for innovative solutions, particularly in the development of organic and eco-friendly laundry care products1. While surfactants remain integral to laundry formulations, the current detergents have evolved to also include polymers, builders, bleaching agents, enzymes, and chelating agents, playing a crucial role in controlling cleaning performance2.Despite the several benefits of polymers and how they improved today's quality of life, the fossil nature of over 98% of current polymers and their disposal via incineration contribute significantly to CO2 emissions3. Addressing this challenge requires the utilization of polymers designed for complete biodegradation or degradation into environmentally benign products, given the limited biodegradability of many currently employed polymers4.Biological polymers, such as chitosan, cellulose, and starch, provide a promising foundation for the development of biodegradable polymers due to their non-toxic nature and natural metabolization. However, native biological polymers often lack the desired performance for specific applications, necessitating chemical modification. Hybrid polymers, combining biological and synthetic components, represent an approach to leverage the best properties of both polymer classes3.Chitosan oligosaccharide (COS), derived from chitosan, exhibits excellent water solubility and low viscosity, even under strong alkaline conditions5. The presence of reactive amino and hydroxyl groups in chitosan's macromolecular structure allows for various modifications, such as alkylation, acylation, and Schiff base formation, tailoring its properties for diverse applications. However, chemical modifications can compromise the biodegradability of chitosan, since molecular weight, macromolecular architecture and the end groups of the polymer can affect this property4. Hydrophobic modifications have been identified as beneficial for optimizing polysaccharides' physico-chemical properties in laundry applications. The length and degree of substitution of hydrophobic appendages are key factors requiring precise tuning to deliver substantial benefits in textiles6.This study aims to produce modified natural biodegradable polymers, addressing the limited information on their use in laundry care and responding to the increasing demand for eco-friendly products. The objective is to enhance cleaning performance and contribute to a circular economy, aligning with the imperative for sustainable solutions in laundry care.1 T. Kalak and R. Cierpiszewski, Textile Research Journal, 2015, 85, 1884-1906.2 K. Jangir, A. Gour, N. K. Suniya, S. K. Meena and K. Parihar, Journal of the Indian Chemical Society, 2023, 100, 100815.3 B. von Vacano, H. Mangold, G. W. M. Vandermeulen, G. Battagliarin, M. Hofmann, J. Bean and A. Kunkel, Angewandte Chemie - International Edition, , DOI:10.1002/anie.202210823.4 G. W. M. Vandermeulen, A. Boarino and H. A. Klok, Journal of Polymer Science, 2022, 60, 1797-1813.5 L. Yue, J. Li, W. Chen, X. Liu, Q. Jiang and W. Xia, Carbohydr Polym, 2017, 176, 356-364.6 M. D'Avino, R. Chilton, S. Gang, M. R. Sivik and D. A. Fulton, Ind Eng Chem Res, 2022, 61, 14159-14172.

洗衣粉生产对能源消耗和环境保护的全球影响强调了创新解决方案的必要性，特别是在开发有机和环保洗衣护理产品方面。虽然表面活性剂仍然是洗衣配方中不可或缺的一部分，但目前的洗涤剂已经发展到还包括聚合物、助洗剂、漂白剂、酶和螯合剂，在控制清洁性能方面发挥着至关重要的作用。目前98%以上的聚合物的化石性质及其通过焚烧处理的方式显著增加了CO2排放3。解决这一挑战需要利用设计为完全生物降解或降解为环境友好的产品的聚合物，鉴于目前使用的许多聚合物的有限的生物降解性4。生物聚合物，如壳聚糖，纤维素和淀粉，提供了一个有前途的基础，由于其无毒的性质和自然代谢的生物可降解聚合物的发展。然而，天然生物聚合物通常缺乏特定应用所需的性能，需要进行化学修饰。混合聚合物结合了生物和合成成分，代表了一种利用两种聚合物最佳性能的方法3。壳寡糖（COS）来源于壳聚糖，具有优异的水溶性和低粘度，即使在强碱性条件下5。在壳聚糖的大分子结构中存在反应性氨基和羟基基团允许进行各种修饰，例如烷基化、酰化和席夫碱形成，从而针对不同的应用定制其性质。然而，化学改性可能会损害壳聚糖的生物降解性，因为聚合物的分子量，大分子结构和端基会影响这一特性4。疏水改性已被确定为有益于优化多糖在洗衣应用中的物理化学性质。疏水性附加物的长度和取代度是需要精确调节以在纺织品中提供实质性益处的关键因素6。本研究旨在生产改性的天然可生物降解聚合物，以解决其在洗衣护理中使用的有限信息，并响应对环保产品日益增长的需求。其目标是提高清洁性能，促进循环经济，与洗衣护理中可持续解决方案的必要性保持一致。1 T Kalak和R. Cierpiszewski，Textile Research Journal，2015，85，1884-1906.2 K. Jangir，A. Gour，N. K. Suniya，S. K. Meena和K. Parihar，Journal of the Indian Chemical Society，2023，100，100815.3 B. von Vacano，H. Mangold，G. W. M. Vandermeulen，G.巴塔利亚林湾Hofmann，J. Bean和A. Kunkel，Angewandte Chemie - International Edition，，DOI：10.1002/anie.202210823.4 G. W. M. Vandermeulen，A. Boarino和H. A. Klok，Journal of Polymer Science，2022，60，1797-1813.5 L. Yue，J. Li，W. Chen，X.刘，智-地Jiang和W. Xia，Carbohydr Polym，2017，176，356-364.6 M.达维诺河Chilton，S.冈，M. R. Sivik和D. A.富尔顿，工业工程化学研究，2022，61，14159-14172。