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烯醇式鋅和鋁配合物應(yīng)用于ε-CL和LA的開環(huán)聚合

發(fā)布時(shí)間:2018-11-17 12:18
【摘要】:高分子材料在帶給社會(huì)進(jìn)步與人民生產(chǎn)生活方便的同時(shí),給我們生存的環(huán)境帶來了不可估量的破壞作用。隨著科學(xué)技術(shù)的進(jìn)步,“可持續(xù)發(fā)展”、“綠色發(fā)展”的理念逐步深深烙入人們的心中。脂肪族聚酯類化合物(aliphatic polyesters),比如聚丙交酯(PLA)、聚己內(nèi)酯(PCL)等均聚物以及它兩之間不同類型的共聚物由于擁有可降解性、更好的生物親和性、滲透性和可再生性在生物、醫(yī)療、材料、藥物載體應(yīng)用廣泛。多年以來國內(nèi)外的研究表明金屬催化劑催化內(nèi)酯和交酯的開環(huán)聚合,是合成這類高分子材料一種比較理想的方法。本論文合成了2個(gè)系列且不同類型的[N,O]雙齒配體的鋅、鋁金屬化合物,并對(duì)這些金屬配合物進(jìn)行了X-射線單晶衍射(X-ray Crystal Structure Determination)、核磁共振(NMR)、元素分析(elemental analysis)等測試技術(shù)表征。并且對(duì)合成出來的配合物進(jìn)行了丙交酯、己內(nèi)酯的均聚和共聚催化作用研究。主要內(nèi)容概括如下:第一章介紹了脂肪族聚酯例如PCL和PLA的均聚和共聚的聚合機(jī)理,分類介紹了Zn、Mg、Al等配合物作為催化劑近來在國內(nèi)外的研究進(jìn)程。第二章制備一系列[N,O]雙齒配體的金屬Zn配合物并對(duì)這類配合物進(jìn)行表征。然后進(jìn)行己內(nèi)酯與丙交酯的單一聚合和他兩之間共聚性能研究。第三章研究在不同條件下和合成一系列[N,O]雙齒配體的金屬Al配合物并對(duì)這類配合物進(jìn)行表征。討論分析條件的不同對(duì)所生成的金屬鋁配合物的影響,并對(duì)他們的不同結(jié)構(gòu)進(jìn)行分析討論。然后對(duì)相關(guān)配合物進(jìn)行己內(nèi)酯的催化性能研究。
[Abstract]:Polymer materials not only bring social progress and convenient production and life, but also bring immeasurable damage to our living environment. With the progress of science and technology, the concept of "sustainable development" and "green development" is deeply rooted in people's hearts. Aliphatic polyester compounds such as (aliphatic polyesters), such as poly (lactide) (PLA), polycaprolactone (PCL), and their different types of copolymers have better biocompatibility due to their degradability. Permeability and reproducibility are widely used in biological, medical, material and drug carriers. For many years, researches at home and abroad show that metal catalyst is an ideal method for the synthesis of this kind of polymeric materials, because of the ring-opening polymerization of lactone and lactide. In this paper, two series of [Nino O] didentate ligands of zinc and aluminum have been synthesized, and the complexes have been characterized by X-ray Crystal Structure Determination), NMR (NMR),. Elemental analysis, (elemental analysis), etc. The homopolymerization and copolymerization of lactide and caprolactone were studied. The main contents are summarized as follows: in Chapter 1, the mechanism of homopolymerization and copolymerization of aliphatic polyester such as PCL and PLA is introduced, and the recent research progress of Zn,Mg,Al complexes as catalysts at home and abroad is introduced. In chapter 2, a series of metal Zn complexes of [Nino O] didentate ligands were prepared and characterized. Then the single polymerization of caprolactone and lactide and the properties of copolymerization between caprolactone and lactide were studied. In chapter 3, a series of metal Al complexes of [Nino O] didentate ligands were synthesized and characterized under different conditions. The influence of different analytical conditions on the formation of aluminum complexes is discussed, and their different structures are discussed. Then the catalytic performance of caprolactone was studied.
【學(xué)位授予單位】:山西大學(xué)
【學(xué)位級(jí)別】:碩士
【學(xué)位授予年份】:2017
【分類號(hào)】:O641.4;O631.5

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本文編號(hào):2337760

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