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摘要：本發(fā)明公開(kāi)了一種磷化聚丙撐碳酸酯共聚物的制備方法，本發(fā)明提供的磷酸化后的聚丙撐碳酸酯熱穩(wěn)定性有很大的提升；磷酸化反應(yīng)可以應(yīng)用于聚丙撐碳酸酯的衍生產(chǎn)物；磷酸化反應(yīng)產(chǎn)物具有一定的阻燃能力，本發(fā)明利用磷酸根將PPC進(jìn)行了修飾，將磷酸根基團(tuán)修飾到了PPC主鏈上，經(jīng)過(guò)TGA和紅外測(cè)試對(duì)PPC進(jìn)行測(cè)試發(fā)現(xiàn)磷酸根基團(tuán)對(duì)PPC進(jìn)行了封端，同時(shí)對(duì)CPPC進(jìn)行同樣反應(yīng)發(fā)現(xiàn)CPPC在發(fā)生封端反應(yīng)的同時(shí)鏈上的氯原子也與磷酸根進(jìn)行了反應(yīng)，進(jìn)而改善了PPC的性質(zhì)，增強(qiáng)了PPC的熱穩(wěn)定性。
Abstract:The invention discloses a preparation method of a phosphated poly(propylene carbonate) copolymer. The poly(propylene carbonate) modified by phosphorylation exhibits significantly improved thermal stability. The phosphorylation reaction can be applied to the derivatives of poly(propylene carbonate), and the phosphorylation product possesses certain flame-retardant properties. In this invention, poly(propylene carbonate) (PPC) is modified by phosphate groups, which are grafted onto the main chain of PPC. Tests on PPC via thermogravimetric analysis (TGA) and infrared spectroscopy reveal that the phosphate groups play a role in terminating the PPC chains. Meanwhile, the same reaction conducted on chlorinated poly(propylene carbonate) (CPPC) shows that during the chain termination reaction, the chlorine atoms on the CPPC chains also react with phosphate groups. This further improves the properties of PPC and enhances its thermal stability.
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