NEW FILMS PRODUCED BY MICROFIBRILLATED NATURAL FIBERS

已经尝试了使用天然纤维的微纤丝形成膜而不使用有机溶剂。以云杉木浆和漂白硫酸盐木浆为原料，采用机械研磨法制备了微纤维、衣蛋白、壳聚糖、蚕丝和胶原蛋白的水悬浮液。所获得的膜分别为约几μ m-约10 μ m厚，是均匀的，坚固的和半透明的。通过拉伸试验评价膜的机械性能。它们的拉伸断裂强度高于商业印刷级纸B。不同微纤维的共混是可能的，使用它们的水悬浮液，并通过这种方法生产新的天然纤维的混杂复合材料。此外，这些膜都是可生物降解的，并且对环境无害，不使用有机溶剂。

A formation of film without using organic solvent has been attempted using microfibrils of natural fibers. It was tried to obtained the films from the water-suspension of microfibrils, which are made from wood pulp ezo spruce and popular bleached kraft pulp), tunicin, chitosan, silk and collagen mechanically by using super grinding method. The obtained films were individually about some mum-some 10 mum thick being homogeneous, strong and translucent, The mechanical properties of films were evaluated by tensile test. Their tensile breaking strength is higher than those of commercial printed-grade paper B.Blending of dofferent microfibrils is possible using water-suspension of them, and new hybrid-composites of natural fibers are produced by this method. Furthermore, these films are all biodegradable and harmless to environment without using an organic solvent.