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聚醚改性有机硅表面活性剂的核磁共振及红外光谱表征

, PP. 222-231

Keywords: 核磁共振(NMR),红外(FT-IR),表征,有机硅,表面活性剂,聚氨酯

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Abstract:

通过核磁共振技术(1H,13CNMR,DEPT135,COSY,HSQC,HMBC)和红外光谱技术(FT-IR),对未知的有机硅表面活性剂商品(NPS-A)进行了表征;结果表明:该表面活性剂是单烯丙基聚乙二醇(AllyloxyPolyEthyleneGlycol,APEG)在聚硅氧烷侧链改性所得,样品中含有合成时所带的大量DMSO溶剂(合成时所代入的),除溶剂外的主要成分为:(1)M-D20-(D′R)6-M(M:三甲基硅氧基;D:二甲基硅氧基;D′:取代的二甲基硅氧基),其中R=CH2CH2CH2-O-(EO)8-H,平均分子量(M(___)n)为4046.0,(2)APEG(M(___)n=410.0)和(3)聚乙二醇(PolyEthyleneGlycol,PEG,M(___)n=370.0),同时还含有少量由烯丙基衍生而来的小分子成分.

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