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首页> 外文期刊>Journal of Applied Polymer Science >Novel Heterocyclic Synthesis and Investigation on Radiation-Grafted Low-Density Polyethylene with 2-N-Vinylpyrrolidone
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Novel Heterocyclic Synthesis and Investigation on Radiation-Grafted Low-Density Polyethylene with 2-N-Vinylpyrrolidone

机译：2-N-乙烯基吡咯烷酮辐射接枝低密度聚乙烯的新型杂环合成及研究

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摘要

Radiation-induced graft polymerization of low-density polyethylene with N-vinylpyrrolidone,LDPE-g-PNVP,was used as a starting material for the synthesis of polyfunctionally substituted heterocyclic products.Thus,LDPE-g-PNVP reacts with ylidenemalononitrile derivatives to give the Michael addition products.In multistep reaction,LDPE-g-PNVP reacts with N,N-dimethylformamide dimethyl acetal (DMFDMA),hydrazine hydrate and malononitrile,respectively,to give a hydropyrrolopyridazine derivative.The latter could also be prepared via the reaction of LDPE-g-PNVP with DMFDMA,followed by treating with cyanoacetohydrazide.Also,LDPE-g-PNVP reacts with malononitrile to give an adduct product,dimer malononitrile derivative 13.The latter reacts with sulfur element to afford the thiophene derivative.Furthermore,this adduct reacts with hydrazine hydrate to isolate the original starting material,LDPE-g-PNVP,and aminopyridine derivative.The resulted films were characterized by in-frared (IR) spectroscopy,~1H nuclear magnetic resonance (~1H-NMR) mass spectroscopy,elemental analysis,swelling behavior,and electron scanning microscope.
机译：低密度聚乙烯与N-乙烯基吡咯烷酮（LDPE-g-PNVP）的辐射诱导接枝聚合反应被用作合成多官能取代杂环产物的起始原料。因此，LDPE-g-PNVP与亚甲基丙二腈衍生物反应生成迈克尔加成产物。在多步反应中，LDPE-g-PNVP分别与N，N-二甲基甲酰胺二甲基乙缩醛（DMFDMA），水合肼和丙二腈反应，生成氢吡咯并哒嗪衍生物。后者也可以通过LDPE反应制备LDPE-g-PNVP与丙二腈反应生成加合物产物二聚体丙二腈衍生物13，后者与硫元素反应生成噻吩衍生物。此外，该加合物与水合肼反应，分离出起始原料LDPE-g-PNVP和氨基吡啶衍生物。所得膜的红外光谱（IR）表征，〜 1H核磁共振（〜1H-NMR）质谱，元素分析，溶胀行为和电子扫描显微镜。

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