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首页> 外文期刊>Journal of Applied Polymer Science >Studies of Glycolysis of Poly(ethylene terephthalate) Recycled from Postconsumer Soft-Drink Bottles.I.Influences of Glycolysis COnditions
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Studies of Glycolysis of Poly(ethylene terephthalate) Recycled from Postconsumer Soft-Drink Bottles.I.Influences of Glycolysis COnditions

机译：从消费后的软饮料瓶回收的聚对苯二甲酸乙二醇酯的糖酵解研究.I。糖酵解条件的影响

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摘要

The glycolysis of recycled poly(ethylene terephthalate) flakes by ethylene glycol (EG) is investigated. Bis-2-hydroxyethylterephthalate (BHET) and oligomers are predominately glycolysis products. The influences of glycolysis temperature, glycolysis time, and the amount of catalyst (cobalt acetate) are illustrated. The BHET, dimer, and oligomers are predominately glycolysis products. The optimum glycolysis temperature is found to be 190°C. If a 190°C glycolysis temperature, 1.5-h glycolysis time, 'and 0.002 mol glycolysis catalyst (cobalt acetate) are used, the glycolysis conversion is almost 100%. The glycolysis conversion rate increases significantly with the glycolysis tem- perature, glycolysis time, and the amount of cobalt acetate. Thermal analyses of glycolysis products are examined by differential scanning calorimetry. In addition, the chemical structures of glycolysis products are also determined by a Fourier transform IR spectrophotometer.
机译：研究了乙二醇（EG）对再生聚对苯二甲酸乙二醇酯片的糖解作用。对苯二甲酸二-2-羟乙基酯（BHET）和低聚物主要是糖酵解产物。说明了糖酵解温度，糖酵解时间和催化剂（乙酸钴）的量的影响。 BHET，二聚体和低聚物主要是糖酵解产物。发现最佳糖酵解温度为190℃。如果使用190°C的糖酵解温度，1.5小时的糖酵解时间和0.002 mol的糖酵解催化剂（乙酸钴），则糖酵解转化率几乎为100％。糖酵解转化率随糖酵解温度，糖酵解时间和乙酸钴的量而显着增加。通过差示扫描量热法检查糖酵解产物的热分析。另外，糖酵解产物的化学结构也通过傅立叶变换红外分光光度计测定。

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