| abstract |
The invention relates to a preparation method of novel graft modified cellulose acetate. The method specifically comprises the following steps of: firstly, introducing halide on the surface of cellulose acetate, and then, performing graft modification through the atom transfer radical reaction of the catalyst generated by electron transfer. Moreover, the modified cellulose acetate is added to a cigarette filter, the filtering performance of the filter to the smoke components can be enhanced remarkably; a separating membrane prepared with the modified cellulose acetate has the advantages of being high in mechanical strength, excellent in toughness, strong in anti-fouling performance, easy to wash, high in pure water flux, high in retention rate to oil drops and capable of being used for treatment on emulsified oil wastewater; and meanwhile, the modification process is simple in technology, simple to operate and lower in cost, and has better market application prospect. |