| 共混涤纶碱水解动力学及水解机理 |
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| 引用本文： | 李光,顾利霞,孙桐.共混涤纶碱水解动力学及水解机理[J].东华大学学报(自然科学版),1988(4). |
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| 作者姓名： | 李光 顾利霞 孙桐 |
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| 作者单位： | 中国纺织大学化学纤维系高分子材料教研室，中国纺织大学化学纤维系高分子材料教研室，中国纺织大学化学纤维系高分子材料教研室 |
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| 摘 要： | 应用比表面积测定仪、扫描电子显微镜和一些化学测试手段,研究了聚对苯二甲酸乙二醇纤维(PET)、共聚酯纤维(PEI)以及PET和PEI共混纤维(PET-I)的碱水解动力学及水解机理。结果表明:碱水解速率次序为PEl>PET-1>PET。PET-I的碱水解由于共混的影响不同于PET,纤维中PEI相优先水解,有蚀刻现象发生,并有微纤维块从纤维上脱落下来。
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| 关 键 词： | 共混涤纶 碱水解 动力学 机理 |
KINETICS AND MECHANISM RELATING ALKALINE HYDROLYSIS OF POLYESTER BLEND FIBERS |
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| Li Quang,Gu Lixia,and Sun Tong.KINETICS AND MECHANISM RELATING ALKALINE HYDROLYSIS OF POLYESTER BLEND FIBERS[J].Journal of Donghua University,1988(4). |
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| Authors: | Li Quang Gu Lixia and Sun Tong |
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| Institution: | Department of Chemical-Fiber Technology |
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| Abstract: | Fibers made from polyester (PET), copolyester(PEI) and their blend(PET-I) were treated with aqueous NaOH solution. The kinetics of alkaline hydrolysis was studied. The equation established from experiments was -dw/dt=KCS. Their rate constants(K) were different. K_(PEI)>K_(PET-I)>K_(PET) was obtained. The mechanism of alkaline hydrolysis was also studied by means of scanning electron microscopy and other analyses. The difference of alkaline hydrolysis mechanism among PET, PET-I and PEI fiber was discovered. When PET-I fiber was treated with aqueous NaOH solution copolyester was predominantly hydrolysed, so a great number of micropores were formed in the fiber. |
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| Keywords: | polyester blend alkaline hydrolysis kinetics mechanism |
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