• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>RSC Advances >Impact of carboxylation and hydrolysis functionalisations on the anti-oil staining behaviour of textiles grafted with poly(N-isopropylacrylamide) hydrogel
【24h】

Impact of carboxylation and hydrolysis functionalisations on the anti-oil staining behaviour of textiles grafted with poly(N-isopropylacrylamide) hydrogel

机译：羧基化和水解功能化对接枝聚N-异丙基丙烯酰胺水凝胶的纺织品抗油污行为的影响

获取原文
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Novel hydrogel-modified textiles have been prepared through photografting poly( N -isopropylacrylamide) (PNIPAAm) onto pristine and functionalised polyethylene terephthalate (PET) surfaces. In this work, two types of functionalisation, carboxylation (CPET) and hydrolysis (HPET), were performed to scrutinise the hydrogel grafting efficiency. Basic characterisation of the pristine, functionalised and grafted textiles was carried out via fourier transform infrared spectroscopy (FTIR), atomic force microscopy (AFM) and field emission scanning electron microscopy (FESEM) analyses. Then, the functional characteristics of these samples were determined based on the oil staining performance. Functionalisation of the PET textiles via hydrolysis and carboxylation gives rise to different chemical reactivity and interactions on the PET surface. Impressively, the surface formed via hydrolysis functionalisation of PET was found to be more efficient compared to that formed via carboxylation, and the untreated one. The HPET surface was remarkably more hydrophilised and rougher than both the UPET and CPET surfaces. The accessibility of the –OH groups for hydrogen abstraction from HPET has a great impact on the hydrogel grafting onto the HPET surface. All the grafted textiles (PNIPAAm- g -UPET, PNIPAAm- g -CPET and PNIPAAm- g -HPET) demonstrated anti-oil staining behaviour at 27 °C. In particular, PNIPAAm- g -HPET textiles with a high degree of grafting (DG) exhibited the fastest rate for oil to de-stain from the surface. Moreover, the reversible transition of PNIPAAm hydrogels around the lower critical solution temperature (LCST) ～ 32 °C from hydrophilic to hydrophobic generates switchable surfaces of the textiles with regard to the oil wettability. Specifically, PNIPAAm- g -HPET textiles also displayed the highest degree of wettability switching as a result of having the highest DG. Taken together, the PNIPAAm hydrogels grafted onto PET textiles were significantly enhanced though hydrolysis functionalisation and possessed excellent switchable surfaces toward oil-staining, having great potential to be used for applications in oil and water separation as well as smart textiles.
机译：通过将聚（N-异丙基丙烯酰胺）（PNIPAAm）光接枝到原始表面和功能化聚对苯二甲酸乙二醇酯（PET）表面上，可以制备出新型的水凝胶改性纺织品。在这项工作中，进行了两种类型的官能化：羧化（CPET）和水解（HPET），以检查水凝胶的接枝效率。通过傅立叶变换红外光谱（FTIR），原子力显微镜（AFM）和场发射扫描电子显微镜（FESEM）分析对原始，功能化和接枝的纺织品进行了基本表征。然后，基于油污性能确定这些样品的功能特性。 PET纺织品通过水解和羧化作用的功能化会在PET表面产生不同的化学反应性和相互作用。令人印象深刻的是，发现与通过羧基化形成的表面相比，通过PET的水解功能化形成的表面更有效，而未经处理的表面。 HPET表面比UPET和CPET表面都更加亲水和粗糙。 -OH基团从HPET提取氢的可及性对将水凝胶接枝到HPET表面有很大影响。所有接枝的纺织品（PNIPAAm-g -UPET，PNIPAAm-g -CPET和PNIPAAm-g -HPET）在27°C时均表现出抗油污行为。特别是，具有高度接枝度（DG）的PNIPAAmg -HPET纺织品表现出最快的油从表面上脱色的速度。此外，PNIPAAm水凝胶在较低的临界溶液温度（LCST）〜32°C左右从亲水性到疏水性的可逆转变，在油的润湿性方面产生了可切换的表面。具体地说，由于具有最高的DG，PNIPAAmg -HPET纺织品也表现出最高的润湿性转换程度。综上所述，通过水解功能化，接枝到PET纺织品上的PNIPAAm水凝胶得到了显着增强，并具有出色的可向油性染色转换的表面，具有巨大的潜力，可用于油水分离和智能纺织品中。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号