KINETICS AND MECHANISM RELATING ALKALINE HYDROLYSIS OF POLYESTER BLEND FIBER  

作　　者：李光 顾利霞 孙桐 

机构地区：[1]Department of Chemical-fiber Technology

出　　处：《Journal of China Textile University(English Edition)》1993年第2期34-40,共7页

摘　　要：Cation Dyeable Polyester(CDP)was made by copolymerizing dimethyl terephthalate(DMT),S-sodium sulfonate dimethyl isophthalate(SIPM) with a weight fraction of 4.5% and ethyleneglycol (EG).Blend of PET and CDP was spun into hollow fiber.The fiber was then treated withaqueous NaOH.In this paper,kinetics and mechanism of alkaline hydrolysis of PET,CDP andtheir blend PET/CDP fiber were studied by means of specific area measurement,scantling elec-tron microscopy and other chemical analyses.It was showed that the rate of alkaline hydrolysis isCDP】PET/CDP】PET.Because of blending effect,the alkaline hydrolysis of PET/CDP is dif-ferent from that of PET.CDP phase in the PET/CDP fiber is predominantly hydrolyzed,andhence some pieces of fiber(micro-fiber) fall off the fiber because of etching.Cation Dyeable Polyester(CDP)was made by copolymerizing dimethyl terephthalate(DMT), S-sodium sulfonate dimethyl isophthalate(SIPM) with a weight fraction of 4.5% and ethylene glycol (EG).Blend of PET and CDP was spun into hollow fiber.The fiber was then treated with aqueous NaOH.In this paper,kinetics and mechanism of alkaline hydrolysis of PET,CDP and their blend PET/CDP fiber were studied by means of specific area measurement,scantling elec- tron microscopy and other chemical analyses.It was showed that the rate of alkaline hydrolysis is CDP>PET/CDP>PET.Because of blending effect,the alkaline hydrolysis of PET/CDP is dif- ferent from that of PET.CDP phase in the PET/CDP fiber is predominantly hydrolyzed,and hence some pieces of fiber(micro-fiber) fall off the fiber because of etching.

关 键 词：POLYESTER fibers COPOLYMER fibers KINETIC analysis mechanism BLEND fibers ALKALINE HYDROLYSIS 

分 类 号：N[自然科学总论]