University of Waterloo, Department of Chemical Engineering, Institute of Polymer Research, Waterloo Institute of Nanotechnology, Waterloo, N2L 3G1, Ontario, Canada.
International Flavors & Fragrances Inc. (IFF), 200 Powder Mill Road E353, Wilmington, DE, USA.
Carbohydr Polym. 2022 Apr 15;282:119121. doi: 10.1016/j.carbpol.2022.119121. Epub 2022 Jan 10.
There is an increasing interest in utilizing more sustainable and inherently biodegradable materials alternatives ideally derived from renewable resources for modern material applications, especially in the area of packaging materials. This work employed the polysaccharide alpha-1,3-glucan derived from an enzymatic polymerization process as a functional additive for natural rubber (NR) latex-based coating films. Coating formulations containing NR and 9-50 wt% alpha-1,3 glucan were prepared and then applied to paper substrates at different thicknesses. The effect of coating formulations on the barrier properties (e.g., oxygen, oil, water vapor barrier), the viscosity, and dry and wet tensile properties were investigated. The NR/glucan coatings exhibited outstanding tensile properties and balanced oxygen and oil barrier performance. However, higher glucan loading could be detrimental to moisture barrier. Overall, this study indicated that the NR/glucan coating films are comparable in performance to commercial coating formulations while providing a renewable, potential to be recycled with paper, and biodegradable alternative.
人们越来越感兴趣地利用更可持续和固有可生物降解的材料替代品，理想情况下这些替代品源自可再生资源，用于现代材料应用，特别是在包装材料领域。这项工作采用了一种酶聚合工艺衍生的多糖 α-1,3-葡聚糖，将其作为天然橡胶 (NR) 胶乳基涂层薄膜的功能添加剂。制备了含有 NR 和 9-50wt%α-1,3 葡聚糖的涂层配方，然后将其以不同的厚度涂覆到纸基材上。研究了涂层配方对阻隔性能（例如氧气、油、水蒸气阻隔）、粘度以及干湿拉伸性能的影响。NR/葡聚糖涂层表现出优异的拉伸性能和平衡的氧气和油阻隔性能。然而，更高的葡聚糖负载量可能对水分阻隔不利。总体而言，这项研究表明，NR/葡聚糖涂层薄膜在性能上可与商业涂层配方相媲美，同时提供了一种可再生、可与纸一起回收和可生物降解的替代品。
