针对棉织物阻燃整理过程中存在的甲醛释放、环境污染、能耗高等问题，本项目拟采用具有高阻燃性能的生物质纤维-海藻酸纤维作为阻燃剂，通过与棉纤维混纺制备棉/海藻酸纤维混纺织物，从而达到阻燃棉织物的目的。拟采用不同金属盐的水溶液为凝固浴制得含不同金属离子的海藻酸纤维，通过与棉纤维混纺制备棉/海藻酸纤维混纺织物，详细研究棉纤维与海藻酸纤维之间的相互作用、金属离子种类及含量对混纺织物热稳定性、阻燃性能、燃烧性能、热解行为的影响规律，阐明金属离子种类、含量影响棉/海藻酸纤维混纺织物阻燃性能的作用机制，揭示海藻酸纤维阻燃混纺棉织物的阻燃机理；研究成果有望拓宽海藻酸纤维的应用领域，有效避免棉织物阻燃整理中存在的环保和安全问题，对于含有类似结构的其它生物质纤维及化学纤维（如黏胶纤维）的阻燃改性具有重要的参考价值，将大大丰富现有的阻燃科学理论。

Due to its biodegradability, comfortableness, biocompatibility, breathability, capability to absorb moisture, renewability and environmentally friendly properties, cotton fabric has been extensively utilized in both civilian and military fields, such as clothing, firefighter apparel, house furnishing, house decorations and military garments. However, cotton fabric is easy to be ignited and its flammability is rapid, which seriously limited the application of cotton fabric. .Alginate fibers, a type of bio-based fibers, are a kind of the inherently flame retardant materials, for example, limited oxygen index (LOI) values of barium alginate, nickel alginate, cobalt alginate, zinc alginate, and aluminum alginate are 52.0, 50.0, 45.0, 49.3 and 42.0%, respectively, and they all passed V-0 rating in the UL-94 test. Can the addition of alginate fiber to cotton fiber improve flame retardancy of prepared cotton/alginate fabric? .In this project, kinds of alginate fiber with different metal ions will be prepared used different metal salts aqueous solution as the coagulation bath. In order to solve the problems of the formaldehyde release, environment pollution and high energy consumption in the progress of flame retardant finishing for cotton fabric, alginate fibers with higher flame retardancy will be utilized to flame retard cotton and cotton /alginate fabrics with a type of mass ratio for alginate fiber to cotton fiber will be prepared. The effect of metal ions and their content on the thermal stability, flame retardancy and pyrolysis properties of cotton /alginte fabrics will be investigated in detail. A variety of test methods will be utilized to investigate the flame retardant mechanism of cotton/alginte fabrics with metal ions. Therefore, this project has both scientific meanings and application prospects and hence to provide a scientific basis for development of environment-friendly flame retardant cotton with high flame retardancy. And this project may raise a new thought to develop a new kind of flame retardant polymeric materials.