Saeed Usman, Bamufleh Hisham, Alzahrani Abdulrahim, Taimoor Aqeel Ahmad, Rather Sami Ullah, Alhumade Hesham, Alalayah Walid M, AlTuraif Hamad
Chemical & Materials Engineering Department, Faculty of Engineering, King Abdulaziz University, Jeddah 21589, Saudi Arabia.
Polymers (Basel). 2025 Aug 31;17(17):2381. doi: 10.3390/polym17172381.
An environmentally friendly biodegradable and flexible polymer with exceptional mechanical, thermal and electromagnetic interference shielding is urgently needed to reduce environmental pollutants and electromagnetic waves to preserve human health. The paper presents our study where we developed biodegradable electrospun nanocomposite by employing polybutylene succinate (PBS) with multiwalled carbon nanotubes (MWCNTs). The crystallization temperature Tc and melting temperature Tm of electrospun PBS/MWCNT composites with 3 wt% of MWCNTs was increased noticeably by 4 °C and 5 °C. The tensile strength increased by about 2.61 ± 0.15 MPA and the elastic modulus increased by about 0.72 ± 0.02 GPa with the addition of 3% MWCNT in polybutylene succinate. The increase in MWCNT content from 0.5 to 3 wt% led to an enhanced storage modulus and electrical properties 5 to 8 times higher in comparison to PBS. Moreover, the MWCNT was tested in different concentrations in PBS for electromagnetic interference shielding (EMI) and the most applicable results were obtained when the MWCNT was 3% which is capable of providing 25.5 db EMI shielding efficiency. The percolation threshold capability of PBS/MWCNT electrospun nanocomposites was 0.94 wt% and has significant entanglement of the MWCNTs and MWCNT network in the PBS matrix for conductive pathways. The study offers a viable process for creating an electrospun PBS/MWCNT composite that is lightweight, biodegradable and has exceptional electromagnetic shielding capabilities.
迫切需要一种环保、可生物降解且具有优异机械、热和电磁干扰屏蔽性能的柔性聚合物，以减少环境污染物和电磁波，保护人类健康。本文介绍了我们的研究，我们通过将聚丁二酸丁二醇酯（PBS）与多壁碳纳米管（MWCNT）结合，开发出了可生物降解的电纺纳米复合材料。含3 wt% MWCNT的电纺PBS/MWCNT复合材料结晶温度Tc和熔点Tm显著提高，分别提高了4℃和5℃。在聚丁二酸丁二醇酯中添加3%的MWCNT后，拉伸强度提高了约2.61±0.15 MPA，弹性模量提高了约0.72±0.02 GPa。MWCNT含量从0.5 wt%增加到3 wt%，储能模量和电性能增强，与PBS相比提高了5到8倍。此外，对不同浓度MWCNT在PBS中的电磁干扰屏蔽（EMI）性能进行了测试，当MWCNT含量为3%时得到了最适用的结果，其能够提供25.5 dB的EMI屏蔽效率。PBS/MWCNT电纺纳米复合材料的渗流阈值能力为0.94 wt%，MWCNT在PBS基体中形成了显著的缠结和MWCNT网络，形成了导电通路。该研究为制备一种轻质、可生物降解且具有优异电磁屏蔽能力的电纺PBS/MWCNT复合材料提供了可行的方法。
