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首页> 外文期刊>Polymers & Polymer Composites >Modified PET Fibres for Metal Ion and Dye Removal From Aqueous Media
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Modified PET Fibres for Metal Ion and Dye Removal From Aqueous Media

机译：用于从水性介质中去除金属离子和染料的改性PET纤维

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摘要

In this study, polyethylene terephthalate) (PET) fibres were modified with methacrylic acid (MAA) to provide new chelating fibres. Benzoyl peroxide (BPO) was used as initiator. To increase the grafting yield, apretreatment with formaldehyde was done, which increased the efficiency of grafting treatment by connecting -CH2OH groups to the fibres' polymeric chains. The effect of reaction parameters including methacrylic acid concentration, benzoyl peroxide concentration, reaction time and temperature on grafting yield were studied. The extent of fibre modification was characterized with FT-IR spectroscopy, thermo-gravimetric analysis (TGA) and SEM. The ability of modified fibres to adsorb Cu~(2+) and Pb~(2+) ions from aqueous media was determined using atomic absorption spectroscopy. The results confirmed that the methacrylic acid grafted PET fibres could remove Cu~(2+) and Pb~(2+) ions from water efficiently. Also, the modified fibre was used for basic dye adsorption from water and showed a great capacity for removal of cationic dyes from aqueous media.
机译：在这项研究中，聚对苯二甲酸乙二醇酯（PET）纤维用甲基丙烯酸（MAA）改性，以提供新的螯合纤维。过氧化苯甲酰（BPO）被用作引发剂。为了提高接枝率，进行了甲醛预处理，通过将-CH2OH基团连接到纤维的聚合物链上来提高接枝处理的效率。研究了甲基丙烯酸浓度，过氧化苯甲酰浓度，反应时间和温度等反应参数对接枝产率的影响。用FT-IR光谱，热重分析（TGA）和SEM表征纤维改性的程度。用原子吸收光谱法测定了改性纤维从水介质中吸附Cu〜（2+）和Pb〜（2+）离子的能力。结果表明，甲基丙烯酸接枝的PET纤维能够有效去除水中的Cu〜（2+）和Pb〜（2+）离子。而且，该改性纤维用于从水中吸附碱性染料，并且显示出从水性介质中去除阳离子染料的强大能力。

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