Extraction et traitement de surface par voie enzymatique des fibres de lin prétraitées aux fluides verts et éco-compatibles

流体和生态相容物预制纤维的表面酶提取和特性

• 批准号: 500309-2016
• 负责人: Elkoun, Said
• 金额: $ 1.82万
• 依托单位: Université de Sherbrooke
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=680712
• 关键词: Extraction; et; traitement; de; surface

Polymer nanocomposites are the most encouraging and promising materials from the last decades, consequently gained much attention due to their unique characteristics of enhancing the mechanical and barrier properties of many composite materials. Hybrid bio-based composites exploiting the synergy between biomass nanofibers (NAF) in a nano-reinforced bio-based polymer can lead to improved properties and maintain environmental appeal. Quebec and Canada possess huge non-exploited biomass and agriculture-based residues which can extensively be utilized as a potential resource of materials for this sector of industry. Several chemical treatments to extract the natural fibers and modify their surfaces are being made to enhance the adhesion or interfacial bonding between polymers and the extracted fibers. However, these treatments often use harmful and environmentally non-friendly approaches to both environment and human health. The proposed project aims at developing a green and integrated process for effective and economical extraction and modification of fibers from flax stems using techniques disorganizing the biomass structure with green fluids such as the supercritical and liquefied CO2 combined with highly selective enzymatic hydrolysis towards the release of nanofibers and other short and medium fibres that will be used to produce composites and bio-nanocomposites reinforcements, after enzymatic functionalization of their surfaces to render them compatible with polymeric matrices. The research results of this project may have a tangible impact for the participating industrial partners who can see in this project an opportunity to consolidate their position in their sectors of interests for the formulation of innovative products. The benefits are tangible for Quebec and Canadian economical development through the valorisation of agricultural products, rural regions development and new jobs creation.

聚合物纳米复合材料是过去几十年来最令人鼓舞和最有前途的材料，由于其增强许多复合材料的机械和阻隔性能的独特特性而受到广泛关注。混合生物基复合材料利用纳米增强生物基聚合物中生物质纳米纤维（NAF）之间的协同作用，可以改善性能并保持环境吸引力。魁北克和加拿大拥有大量未开发的生物质和农业残留物，可广泛用作该工业部门的潜在材料资源。正在进行几种化学处理来提取天然纤维并改性其表面，以增强聚合物和提取的纤维之间的粘附或界面结合。然而，这些治疗通常使用对环境和人类健康有害且不环保的方法。拟议项目旨在开发一种绿色综合工艺，利用超临界和液化二氧化碳等绿色流体破坏生物质结构的技术，结合高选择性酶水解释放纳米纤维，有效、经济地从亚麻茎中提取和改性纤维。以及其他短纤维和中纤维，在对其表面进行酶促功能化以使其与聚合物基质相容后，将用于生产复合材料和生物纳米复合材料增强材料。该项目的研究成果可能会对参与的工业合作伙伴产生切实的影响，他们可以在该项目中看到一个巩固其在创新产品制定的利益领域中的地位的机会。通过农产品的增值、农村地区的发展和创造新的就业机会，这对魁北克和加拿大的经济发展有实实在在的好处。