Enhancing the marine antifouling property of high-density polyethylene through melt grafting of poly (hexamethylene guanidine)

文献类型： 外文期刊

第一作者： Wang, Jiaqi

作者： Wang, Jiaqi;Yu, Wenwen;Liu, Wenying;Wang, Guofeng;Shi, Jiangao;Wang, Hong

作者机构：

关键词： Marine antifouling; Nonpoisonous; Nonleaching; (LCB) long -chain branch

期刊名称：AQUACULTURAL ENGINEERING （ 影响因子：4.0； 五年影响因子：3.8 ）

ISSN： 0144-8609

年卷期： 2024 年 106 卷

页码：

收录情况： SCI

摘要： Acquiring environment -friendly, wide -spectrum antifouling materials is currently a significant challenge. Herein, we focused on covalently bonding poly (hexamethylene guanidine) (PHMG) to high -density polyethylene (HDPE) through a melt grafting reaction. The successful occurrence of this grafting reaction was confirmed by FT-IR analysis. Moreover, the presence of long -chain branching (LCB) was established through Cole -Cole plot, van Gurp-Palmen diagram, and dynamic thermomechanical property. This presence of LCB improved the impact strength of modified HDPE materials. An increased PHMG grafting content in the material led to a significant increase in the inhibition rate of Escherichia coli and Staphylococcus aureus growth, without any detectable leaching of PHMG. Furthermore, inverted fluorescence microscopy revealed a substantial inhibitory effect of the modified HDPE on diatom attachment and Chlorella sedimentation. Specifically, compared with the unmodified HDPE material, the HDPE with 2 wt% PHMG grafting showed a 79.8% decrease in the attachment rate of diatoms and a 64.5% reduction in Chlorella sedimentation. This research provides valuable insights into the development of eco-friendly antifouling materials with enhanced marine antifouling properties.

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