本文選題：可再生資源 + 聚酯��； 參考：《天津理工大學(xué)》2017年碩士論文

【摘要】：聚酯材料指的是大分子主鏈以酯基為主要構(gòu)成的高分子材料,可以由不同的二元醇和二羧酸通過(guò)縮聚的方法制備。芳香族聚酯(如PET,PBT)具有良好的熱穩(wěn)定性和機(jī)械性能,使得其在包裝業(yè)、工程塑料等方面得到廣泛應(yīng)用,然而這些基于對(duì)苯二甲酸的芳香族聚酯材料的合成依賴于石油等不可再生資源。目前,由于人類對(duì)石油資源及其產(chǎn)品的依賴日趨增加,據(jù)有關(guān)國(guó)際組織估計(jì),世界石油資源只能維持50年左右,此外,石油的過(guò)度使用會(huì)造成環(huán)境的污染,要解決這些問(wèn)題就要擺脫對(duì)石油的依賴,尋找可再生資源來(lái)制備高分子材料。1.我們描述了一種源于可再生資源檸檬酸的芳香族單體3-(甲氧基羰基)-2-呋喃乙酸甲酯(MCFA)的合成,這種單體可以和不同鏈長(zhǎng)的脂肪族二醇通過(guò)熔融聚合反應(yīng)獲得一系列的熱塑性材料,令人意外的是,這些材料可以在不添加任何交聯(lián)劑或引發(fā)劑的條件下發(fā)生自交聯(lián)反應(yīng),而且交聯(lián)后呈現(xiàn)出彈性性能。我們通過(guò)紅外光譜,核磁共振以及其他的相關(guān)實(shí)驗(yàn)方法對(duì)交聯(lián)機(jī)理進(jìn)行了研究。并且運(yùn)用熱重分析(TGA),差示掃描量熱分析(DSC)對(duì)交聯(lián)前后的聚合物進(jìn)行熱力學(xué)性能研究,用拉伸實(shí)驗(yàn)對(duì)交聯(lián)聚合物的力學(xué)性能進(jìn)行了研究,對(duì)交聯(lián)聚合物進(jìn)行降解實(shí)驗(yàn),研究其降解性能�？傊�,我們所獲得的生物基熱固性材料具有以下優(yōu)點(diǎn):a)生物來(lái)源和生物降解性,b)自交聯(lián),具有清潔、安全性,c)良好的熱穩(wěn)定性和良好的機(jī)械性能。2.聚丁二酸丁二醇酯(PBS)是目前應(yīng)用比較廣泛的可降解生物基聚酯,為了進(jìn)一步提高機(jī)械性能,熱穩(wěn)定性能,我們利用可再生資源樟腦作為原始材料合成樟腦醇對(duì)PBS進(jìn)行共聚改性,合成了一系列的共聚酯,并采用核磁共振、傅里葉紅外光譜對(duì)合成的聚酯進(jìn)行結(jié)構(gòu)分析,利用熱重分析儀和差示掃描量熱儀對(duì)聚酯進(jìn)行熱力學(xué)性能分析。研究表明,樟腦醇的引入顯著提高了共聚酯的玻璃化轉(zhuǎn)變溫度(Tg),而且引入樟腦醇之后,更易獲得較高分子量的聚酯材料。
[Abstract]:Polyester material refers to macromolecule material which is mainly made up of the main chain of large molecular chain, which is mainly composed of ester base. It can be prepared by polycondensation of different diols and two carboxylic acids. Aromatic polyester (such as PET, PBT) has good thermal stability and mechanical properties, which make it widely used in packaging industry, process plastic and so on. The synthesis of aromatic polyesters of benzoic acid is dependent on non renewable resources such as oil. At present, due to the increasing dependence of human resources and their products on oil resources and their products, the world oil resources can only be maintained for about 50 years, according to the relevant international organizations. In addition, the excessive use of oil will cause environmental pollution and solve these problems. To get rid of the dependence on oil, find renewable resources to prepare polymer material.1., we describe a synthesis of aromatic monomer 3- (methoxy carbonyl) -2- furan methyl acetate (MCFA) derived from the renewable resource citric acid. This monomer can obtain a series of heat by melting polymerization with different chain length fatty groups of adipose diols. It is surprising that these materials can have self crosslinking reactions without any crosslinker or initiator, and they have elastic properties after cross linking. We have studied the mechanism of crosslinking by infrared, nuclear magnetic resonance and other related experimental methods. And we used thermogravimetric analysis (TGA) to show the difference. The thermodynamic properties of the crosslinked polymers were studied by the scanning calorimetry (DSC). The mechanical properties of the crosslinked polymers were studied by the tensile test. The degradation experiments of the crosslinked polymers were carried out and the degradation properties were studied. In conclusion, the biobased thermosetting materials obtained by us have the following advantages: a) biological sources and biodegradation. Sex, b) self crosslinking, clean, safe, c) good thermal stability and good mechanical properties,.2. polybutylene dibutylene dibutylate (PBS) is a widely used biodegradable biobased polyester. In order to further improve mechanical properties and thermal stability, we use regenerative camphor as raw material to synthesize camphor alcohol to PBS. A series of copolyesters were synthesized by line copolymerization. The structure of synthetic polyester was analyzed by NMR and Fourier transform infrared spectroscopy. The thermodynamic properties of polyester were analyzed by thermogravimetric analyzer and differential scanning calorimeter. The study showed that the introduction of camphor alcohol increased the glass transition temperature of copolyesters (Tg). After introducing camphor alcohol, it is easier to obtain high molecular weight polyester material.

【學(xué)位授予單位】：天津理工大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：O633.14

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