Phosphorylation of lignocellulosic fibers to produce a fire retardant paper grade

Kruger是加拿大最大的木材转化、造纸、生物材料和可再生能源公司之一，在北美拥有超过110年的历史，5000名员工和19个生产基地。如今，加拿大纸业市场偏爱的产品新闻纸价格直线下跌，危及到传统造纸企业的生存。像克鲁格这样的大公司别无选择，只能通过创新来维持和扩大其经济活动。最近，来自trois - rivi<e:1>学院的Innofibre学院技术转移中心和位于trois - rivi<e:1>的魁北克大学木质纤维素材料研究中心CRML开发了木质纤维素纤维磷酸化反应的新途径。该产品被称为磷酸化纤维，具有阻燃、离子交换和吸水能力等优异性能。然而，这种反应有一个明显的缺点。接枝的磷酸盐片段在表面产生高排斥力电荷，损害纤维相互结合的能力，从而形成强度纸张。本项目的目的是从磷酸化的木质纤维素纤维中开发一种阻燃造纸配方，而不会造成纸张强度的明显松动。评价和量化纤维投料、磷酸化试剂、初始浓度、温度、时间、反离子种类等反应参数对阻燃效率和纸张强度的影响。在项目结束时，innofiber将向Kruger提供可扩展的最佳技术解决方案，以磷酸化木质纤维素纤维生产阻燃纸级。

Kruger is one of the largest Canadian company in wood transformation, papermaking, biomaterials and renewable energy with more than 110 years of history, 5000 employees and 19 manufacturing sites in North America. Nowadays, the newsprint paper, a predilection product of Canadian paper market, is in a free fall and jeopardises the existence of secular papermakers. Big companies like Kruger have no other option but to innovate in order to maintain and expand their economic activity. Recently, Innofibre, a college centre for the transfer of technology from Trois-Rivières College and CRML, a university research centre in lignocellulosic materials from Quebec University at Trois-Rivières, have developed a new pathway for the phosphorylation reaction of lignocellulosic fibers. The product, called phosphorylated fibers, has outstanding properties including fire retardant, ion exchange and water absorption capacity. However, the reaction has a significant drawback. The grafted phosphate moiety generates high repulsion charge at the surface, impairing the fibers capacity to bond each other and therefore to form a strength paper sheet. The purpose of this project will be to develop a fire retardant papermaking recipe from the phosphorylated lignocellulosic fibers without significant loose of paper strength. The influence of reaction parameters like fiber furnish, phosphorylation reagent, initial concentration, temperature, time, counter-ion species on the fire retardant efficiency and paper strength will be evaluated and quantified. At the end of the project, Innofibre will provide to Kruger a scalable best available technological solution to produce a fire retardant paper grade from phosphorylated lignocellulosic fibers.