聚己内酰胺-聚乙二醇多嵌段共聚物的结构和性能——Ⅰ.嵌段共聚物的大分子结构  

THE STRUCTURE AND PROPERTY OF PA6-PEG BLOCK COPOLYMER——Ⅰ. THE MACROMOLECULE STRUCTURE OF THIS BLOCK COPOLYMER

作　　者：陈霏[1] 顾利霞[1] 陈彦模[1] 

机构地区：[1]中国纺织大学化纤系

出　　处：《合成纤维工业》1992年第6期19-23,共5页China Synthetic Fiber Industry

摘　　要：应用FIR,^(13)CNMR,[η]等测定方法研究了不同比例的聚己内酰胺-聚乙二醇共聚物的结构。结果表明:共聚物的序列模型以聚己内酰胺-聚乙二醇-聚己内酰胺三嵌段为主.聚乙二醇链段的平均链节数为20,聚己内酰胺链段的平均链节数分别为35(质量比PEG/PA6=15%)和30(质量比PET/PA6=30%)。This article dealed with the synthesis and characterization of a new kind of polycaprolactam (PA6)-polyethylene glycol(PEG) block copolymer with different block proportion. The macromolecule structure ofthe copolymer was investigated by means of Fourier Infrared(FIR) absorption spectroscope,'C nuclear mag-netic resonance (^(13)CNMR) spectrometer and viscosity measuring. The results indicated that PA6-PEG blockcopolymer could be formed. PA6 and PEG segments are connected by--COO--or--NH--. The copolymer is ended with PA6 segments. The sequence structure of the copolymer mainly have three blocks with the modelof PA6-PEG-PA6. The average chain number of PEG segments is 20,and that of PA6 segments is 35(weightratio before reaction is PEG/PA6=15%) or 30(PEG/PA6=30%). The theoretical conjectural result of thesequence distribution model measured from ^(13)CNMR spectrometer showed a good agreement with the virtualtest result of the molecular weight of PA6 pre-polymer. But the virtual composition ratio of PEG and PA6 incopolymer is a little more different from its ratio before reaction. This was caused by the polymerization pro-cess.

关 键 词：共聚 聚氧化乙烯 聚酰胺-6 

分 类 号：TQ342.11[化学工程—化纤工业]