用顺序CuAAC键合化学和aza-Michael加成法制备Jeffamine交联聚氯乙烯薄膜

Cagatay Altinkok
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引用次数: 0

摘要

摘要本研究的目的是通过铜(I)催化叠氮-炔环加成反应(CuAAC)和aza-Michael加成反应(PVC- jeffs),设计一系列新型聚乙胺(PEA)交联聚氯乙烯(PVC)膜。首先,通过氯基与叠氮化钠(PVC- n3)的置换反应制备了可点击的叠氮化功能PVC,然后用CuAAC (PVC-acr)与丙烯酸丙酯反应。第二步是将PVC-acr和杰弗明加在一起,得到所需的PVC-Jeffs。以二氯甲烷为溶剂,采用浇铸法制备透明均匀的薄膜。重量负载比(PVC/Jeffamine (w/w) = 9:1;8:2和7:3)对最终聚氯乙烯-杰夫斯的热性能进行了系统的探讨。利用傅里叶红外(FT-IR)和质子核磁共振(1H-NMR)对pvc -杰夫斯及其中间体的化学结构进行了表征,并用热重(TGA)和差示扫描量热(DSC)分析了样品的热特性。高负载的Jeffamine PVC-Jeff表现出更高的热稳定性和玻璃化转变温度,Tg为69.9℃。因此,这种策略可以使PVC基薄膜具有良好的性能,有望应用于生物医用材料的制备。关键词:aza-Michael加成铜催化叠氮-炔环加成交联膜jeffaminepoly(氯乙烯)感谢Denge Kimya提供的Jeffamine®ED-600。披露声明作者未报告潜在的利益冲突。
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Development of Jeffamine cross-linked poly(vinyl chloride) films by sequential CuAAC click chemistry and aza-Michael addition
AbstractThe objective of this study is to present a promising route to design a series of new poly(vinyl chloride) (PVC) films cross-linked with polyetheramine (PEA), namely jeffamine, by combining copper (I)-catalyzed azide-alkyne cycloaddition “click” reaction (CuAAC) and aza-Michael addition (PVC-Jeffs). In the first step, the clickable azido‐functional PVC is prepared easily by displacement reaction between chlorine groups and sodium azide (PVC-N3) and then reacted with propargyl acrylate by CuAAC (PVC-acr). The second step is aza-Michael addition of PVC-acr and Jeffamine to achieve the desired PVC-Jeffs. Transparent and uniform films are prepared by casting from dichloromethane solvent. The effect of loading ratio by weight (PVC/Jeffamine (w/w) = 9:1; 8:2 and 7:3) on the thermal properties of final PVC-Jeffs is systematically explored. The chemical structure of PVC-Jeffs and their intermediates is characterized by Fourier transform infrared (FT-IR) and proton nuclear magnetic resonance (1H-NMR) spectroscopies, whereas thermal characteristics of the samples are investigated by thermogravimetric (TGA) and differential scanning calorimetry (DSC) analyses. The higher Jeffamine loaded PVC-Jeff exhibit enhanced thermostability and glass transition temperature with the Tg of 69.9 °C. Hence, this kind of strategy to achieve the PVC based films with good characteristics is expected to be applied in the preparation of biomedical materials.Keywords: aza-Michael additioncopper-catalyzed azide-alkyne cycloadditioncross-linked filmsJeffaminepoly(vinyl chloride) AcknowledgmentThe authors thank Denge Kimya for supplying the Jeffamine® ED-600.Disclosure statementNo potential conflict of interest was reported by the author(s).
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来源期刊
CiteScore
4.60
自引率
16.00%
发文量
61
审稿时长
3.1 months
期刊介绍: Journal of Macromolecular Science, Part A: Pure and Applied Chemistry (JMS-PAC) is a necessary resource for academic and industrial scientists and engineers whose interests center on both synthetic and naturally occurring polymers and their applications.
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