摘要
以乙二醇为解聚剂,醇解废弃聚酯纤维得到中间产物对苯二甲酸乙二醇酯（BHET）单体,再经过硝化、还原、重氮反应得到重氮盐,重氮盐与1-（4-磺酸苯基）-3-甲基-5-吡唑啉酮偶合制备偶氮分散染料,可用于涤纶、锦纶等纤维及其制品的染色,实现废弃聚酯的资源化再利用.合成的染料呈黄色,与其紫外光谱中最大吸收波长为395～398nm相符.将合成的染料配制为pH值3.5～6.0的染液对锦纶长丝染色,并分析了不同pH值条件下的上染率和L＊、a＊、b＊值.
By utilizing ethylene glycol as the depolymerizing agent,polyester fiber waste was glycolytically depolymerized into bis（2-hydroxyethyl） terephthalate （BHET）.Then,BHET was nitrified,reduced and diazotized into diazonium salt,successively.Finally,the diazonium salt was coupled with 1-（4-sulfophenyl）-3-methyl-5-pyrazolone to synthesize azo disperse dyestuff.The azo disperse dyestuff could be applied to polyester,polyamide and their products in order to achieve the recycling of waste PET fiber in the textile industry.The maximum absorption wavelength of the synthesized dyestuff was 395-398 nm,which corresponded to its bright yellow color.Polyamide filament was dyed by the synthesized dyestuff with the pH from 3.5 to 6.0.The variation of the dye uptake and L＊,a＊,b＊ value of the dyestuff to the polyamide filament with different pH were discussed.
出处
《材料导报》
EI
CAS
CSCD
北大核心
2014年第24期43-46,共4页
Materials Reports
基金
国家高科技研究发展计划(863)资助项目(2012AA030313)
生态纺织教育部重点实验室(江南大学)资助项目(KLET1115)
中央高校基本科研业务费专项资金资助项目(JUSRP11201)
江苏省产学研联合创新资金项目(BY2012060)
关键词
废弃聚酯纤维
醇解
对苯二甲酸乙二醇酯
偶氮分散染料
waste polyester fiber
alcoholysis
bis（2-hydroxyethyl）terephthalate
azo disperse dyestuff
