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首页> 外文期刊>RSC Advances >Functionalization of halloysite nanotubes by enlargement and layer-by-layer assembly for controlled release of the fungicide iodopropynyl butylcarbamate
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Functionalization of halloysite nanotubes by enlargement and layer-by-layer assembly for controlled release of the fungicide iodopropynyl butylcarbamate

机译：通过扩大和逐层组装对杀菌剂碘基炔基丁基氨基酯控制释放的晶体纳米管的官能化

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摘要

Iodopropynyl butylcarbamate (IPBC) is currently one of the most important fungicides widely used for industrial coatings and bamboo treatment. In this work, a controlled release composite with IPBC for inhibition of mold and stain fungi was prepared using enlarged halloysite nanotubes (HNTs) with layer-by-layer (LbL) assembly of polyelectrolyte multilayers. The acid-treated HNTs retained their tubular structure with increased internal diameter, and IPBC loading efficiency was therefore increased to 24.4%, approximately three times the amount of raw HNTs (8.4%). In vitro drug release assay showed that IPBC could be released from HNTs in a sustainable manner with a total release amount of 33.8% over a period of 35 days. The release rate of IPBC could be further controlled by adjusting the number of LbL layers on the tubes and the released amount of IPBC could be limited to less than 10% in 100 days. An inhibition zone test indicated the as-prepared nanocomposites exhibited significant anti-fungal performance against three mold fungi (Aspergillus niger, Trichoderma viride, and Penicillium citrinum) and one stain fungus (Botryodiplodia theobromae). The results support the potential use of HNTs for a prolonged service life of bamboo products.
机译：碘丙炔基丁基氨基甲酸酯（IPBC）目前是最重要的杀菌剂之一，广泛用于工业涂料和竹治疗。在这项工作中，使用具有由聚电解质多层的层（LBL）组件的逐层（LBL）组件，制备具有抑制模具和污渍真菌的IPBC的控制释放复合材料。因此，酸处理的HNT保持其管状结构随着内径增加，因此IPBC负载效率增加到24.4％，而原料HNT的量约为3倍（8.4％）。体外药物释放测定表明，IPBC可以以可持续的方式从HNT释放，总释放量在35天内以33.8％。可以通过调节管上的LBL层数的释放速率来进一步控制，并且在100天内的IPBC的释放量可以限制为小于10％。抑制区试验表明，制备的纳米复合材料表现出针对三种模具真菌（Aspergillus Niger，Trichoderma Virid和Penicillium Citrinum）的显着抗真菌性能，以及一种染色真菌（Botryodiplodia theobromae）。结果支持潜在使用HNT的竹制品使用寿命。

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    《RSC Advances》 |2019年第72期|共9页
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  • 正文语种 eng
  • 中图分类 化学;
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