聚酯多元醇增容的淀粉—聚己內(nèi)酯復(fù)合材料的制備與表征
發(fā)布時間：2019-03-19 15:49
【摘要】：當(dāng)前不可生物降解的塑料垃圾嚴(yán)重危害人類的生存環(huán)境,因此制備低成本全生物降解的高分子材料勢在必行。淀粉-聚己內(nèi)酯復(fù)合材料是一種全生物降解的高分子復(fù)合材料。但目前存在的問題是淀粉和聚己內(nèi)酯(PCL)不相容,力學(xué)性能不理想。本文采用微波法成功制備了各種不同種類不同分子量的聚酯多元醇,用聚酯多元醇合成的聚氨酯預(yù)聚體(PUP)增容淀粉-聚己內(nèi)酯高分子復(fù)合材料,改善了這種高分子復(fù)合材料的界面相容性和機(jī)械性能。通過此處探索有望制備出一種低成本和性能優(yōu)良的高分子復(fù)合材料。本文首先以己二酸,丁二醇為原料,鈦酸四正丁酯為催化劑,二元酸與二元醇的物質(zhì)的量比為1:1.2,用電腦微波催化合成萃取儀,在一定的條件下,成功合成了白色蠟狀的固體聚己二酸丁二醇酯二醇(PBA),并用液體核磁共振波譜和傅立葉變換紅外光譜進(jìn)行了表征。相較于傳統(tǒng)的聚酯合成的方法,該方法極大程度的縮短了合成反應(yīng)的時間,安全性更高。而后通過減壓蒸餾的方法,蒸餾出低沸點的水,使酯化反應(yīng)進(jìn)一步進(jìn)行,擴(kuò)大了 PBA的分子量。運用該方法快速的合成了不同分子量不同種類的聚酯多元醇。如聚己二酸乙二醇酯二醇,聚己二酸己二醇酯二醇,聚丁二酸乙二醇酯二醇,聚丁二酸丁二醇酯二醇(PBS),聚丁二酸己二醇酯二醇等。本文第三章利用合成的數(shù)均分子量為1338的聚己二酸己二醇酯二醇與4, 4'-二苯基甲烷二異氰酸酯反應(yīng),合成聚氨酯預(yù)聚體(PHAPU),然后將其與淀粉、聚己內(nèi)酯在密煉機(jī)中熔融混合,制備了一系列的復(fù)合材料。在恒溫箱中平衡一天后,對復(fù)合材料進(jìn)行傅里葉紅外測試和拉力測試,結(jié)果顯示,加入不同含量的聚酯基聚氨酯預(yù)聚體的淀粉—聚己內(nèi)酯復(fù)合材料的相容性和力學(xué)性能得到了提高。
[Abstract]:At present, non-biodegradable plastic waste seriously endangers the living environment of human beings, so it is imperative to prepare low-cost fully biodegradable polymer materials. Starch-polycaprolactone composite is a kind of biodegradable polymer composite. However, the existing problem is that starch and polycaprolactone (PCL) are incompatible, and the mechanical properties are not ideal. In this paper, various kinds of polyester polyols with different molecular weights were successfully prepared by microwave method, and polyurethane prepolymer (PUP)-polycaprolactone polymer composites were prepared. The interfacial compatibility and mechanical properties of the polymer composites were improved. A kind of polymer composite with low cost and excellent performance is expected to be prepared in this paper. In this paper, using adipic acid, butanediol as raw material and tetrabutyl titanate as catalyst, the molar ratio of dicarboxylic acid to diol is 1 / 1.2. The extractor is synthesized by computer microwave catalysis under certain conditions. White waxy solid poly (butylene adipate) diol (PBA), was successfully synthesized and characterized by liquid nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy. Compared with the traditional method of polyester synthesis, this method greatly shortens the reaction time and has higher safety. Then the low boiling point water was distilled by vacuum distillation. The esterification reaction was further carried out and the molecular weight of PBA was enlarged. Polyester polyols with different molecular weights and different kinds of polyols were rapidly synthesized by this method. Such as poly (ethylene glycol adipate), poly (hexanediol adipate) diol, poly (ethylene glycol succinate), poly (butylene succinate) diol (PBS), poly (hexanediol succinate) diol and so on. In the third chapter, the polyurethane prepolymer (PHAPU), was synthesized by the reaction of 4,4-diphenyl methane diisocyanate with the synthesized poly (hexanediol adipate) with a molecular weight of 1338, and then reacted with starch. A series of composites were prepared by melt mixing of polycaprolactone in mixer. After one day's balance in the thermostat, the composites were tested by Fourier transform infrared (FTIR) and tensile test. The results showed that: The compatibility and mechanical properties of starch-polycaprolactone composites with different content of polyester-based polyurethane prepolymer were improved.
【學(xué)位授予單位】：華中師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TQ317;TB332
本文編號：2443663
[Abstract]:At present, non-biodegradable plastic waste seriously endangers the living environment of human beings, so it is imperative to prepare low-cost fully biodegradable polymer materials. Starch-polycaprolactone composite is a kind of biodegradable polymer composite. However, the existing problem is that starch and polycaprolactone (PCL) are incompatible, and the mechanical properties are not ideal. In this paper, various kinds of polyester polyols with different molecular weights were successfully prepared by microwave method, and polyurethane prepolymer (PUP)-polycaprolactone polymer composites were prepared. The interfacial compatibility and mechanical properties of the polymer composites were improved. A kind of polymer composite with low cost and excellent performance is expected to be prepared in this paper. In this paper, using adipic acid, butanediol as raw material and tetrabutyl titanate as catalyst, the molar ratio of dicarboxylic acid to diol is 1 / 1.2. The extractor is synthesized by computer microwave catalysis under certain conditions. White waxy solid poly (butylene adipate) diol (PBA), was successfully synthesized and characterized by liquid nuclear magnetic resonance spectroscopy and Fourier transform infrared spectroscopy. Compared with the traditional method of polyester synthesis, this method greatly shortens the reaction time and has higher safety. Then the low boiling point water was distilled by vacuum distillation. The esterification reaction was further carried out and the molecular weight of PBA was enlarged. Polyester polyols with different molecular weights and different kinds of polyols were rapidly synthesized by this method. Such as poly (ethylene glycol adipate), poly (hexanediol adipate) diol, poly (ethylene glycol succinate), poly (butylene succinate) diol (PBS), poly (hexanediol succinate) diol and so on. In the third chapter, the polyurethane prepolymer (PHAPU), was synthesized by the reaction of 4,4-diphenyl methane diisocyanate with the synthesized poly (hexanediol adipate) with a molecular weight of 1338, and then reacted with starch. A series of composites were prepared by melt mixing of polycaprolactone in mixer. After one day's balance in the thermostat, the composites were tested by Fourier transform infrared (FTIR) and tensile test. The results showed that: The compatibility and mechanical properties of starch-polycaprolactone composites with different content of polyester-based polyurethane prepolymer were improved.
【學(xué)位授予單位】：華中師范大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2017
【分類號】：TQ317;TB332
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