Studying On Degumming Process And Research Of Structure And Properties Of Corn Husk Fiber

The history of corn planting are centuries years old in China, there are lots of corn planted in our country, and it is easy to get the raw material of corn husks. The development of corn-husk fiber is mainly extract the shuck of the maize cob to get fiber. For hundreds of years a great deal of corn husks just were used to as firewood and the material of paper, this is a kind of waste of resources .As a kind of no pollution and degradable pollutant fiber, the exploitation of corn husk will accord with the world's current and adapt well to people's demand for enjoying life, which is of real significance.In this paper, On the basis of chemical component analysis, the compare was made between corn-husk fiber and other fiber like hempfiber. The chemical degumming process of corn husk is discussed .The techniques and parameters of degumming are made out .At last, the basic physical properties of degummed corn-husk fiber and the structure of single fiber are studied.The main content of this paper is as follows:(1)The quantities of the chemical component in corn husk are similar with hemp, ramie and flax and so on. The percent of cellulose is 48.54% the percent of pectin is 13.49%, the percent of lignin is 9.29%.(2)According to the properties of the corn husk, the chemical degumming process may take such a process route: sample preparationâ†'acid steepingâ†'washingâ†'first alkali liquor degummingâ†'washingâ†'second alkali liquor degummingâ†'washingâ†'beatingâ†'acid washingâ†'washingâ†'dehydrationâ†'oilingâ†'dehydrationâ†'loosingâ†'drying.(3) In first alkali liquor degumming, the single factor experiments were carried on the time of alkali boiling and the density of alkali. The result shows that the two factors all have a obvious influence on the degumming.(4)Through the result of experiments, the best parameters were made out in the second alkali liquor degumming. Those parameters are as follows are density of alkali is: 14.05 g/L, the time of alkali boiling is 103.30min,and the percent of sodium phosphate tribasic is 4.47%.(5)The degummed corn-husk fiber is fine enough for weaving, but the length is too shorter.The gotten fiber has a similar moisture regain with cotton fiber, and a poor intensity.(6)The corn-husk fiber's photos of the optical microscope and scanning electron microscope were studied.The result is that...