针对传统碱氧漂白加工过程中的能耗、污染及织物强力损失等问题,将仿酶型金属化合物卟啉铁作为新型低温漂白催化剂应用于棉织物双氧水低温漂白加工.采用单因素和正交试验方法研究了催化剂质量浓度、pH值、双氧水质量浓度、漂白温度及漂白时间等工艺因素对低温漂白后棉织物白度和拉伸断裂强力指标的影响.研究结果表明:在卟啉铁质量浓度为0.001 g/L、30％双氧水质量浓度为2 g/L、漂白温度为60℃、pH值为12及漂白时间为45 min的条件下,漂白后棉织物的白度可达75.02％,强力保留率为91.9％,其白度高于常规碱氧漂白和四乙酰乙二胺(TAED)活化漂白工艺,断裂强力优于常规碱氧漂白工艺但低于TAED活化漂白工艺.%In view of the problems of energy consumption , environmental pollution and fabric strength loss during the conventional oxygen-alkali bleaching , biomimetic metal complex porphyrin iron was used as a catalyst in low temperature peroxide bleaching of cotton fabric . The influences of catalyst concentration, pH value, H2O2 concentration, bleaching temperature and time on the whiteness and tensile strength index of the treated fabric were investigated by single factor and orthogonal tests .The optimized parameters are as followed: mass concentration of porphyrin iron is 0 .001 g/L, mass concentration of 30％H2 O2 is 2 g/L, and bleaching at 60 ℃ for 45 min with a pH value of 12.The treated cotton fabric achieves the whiteness of 75.02％, which is higher than that in conventional oxygen-alkali bleaching and tetraacetyl ethylenediamine ( TAED ) activation bleaching process . The tensile strength of the treated cotton fabric is 91 .9％, which is better than that in conventional alkaline oxygen bleaching process , but lower than that in the TAED activation bleaching process.
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