原子转移自由基聚合
炭黑
材料科学
磺酸
聚苯乙烯
聚合物
碳纳米管
化学工程
碳纤维
高分子化学
聚合
纳米复合材料
自由基聚合
纳米技术
复合材料
复合数
天然橡胶
工程类
作者
Artavazd Kirakosyan,Dong‐Hyun Lee,Yoonseong Choi,Namgee Jung,Jihoon Choi
出处
期刊:Molecules
[Multidisciplinary Digital Publishing Institute]
日期:2023-05-18
卷期号:28 (10): 4168-4168
被引量:10
标识
DOI:10.3390/molecules28104168
摘要
Owing to their excellent electrical conductivity and robust mechanical properties, carbon-based nanocomposites are being used in a wide range of applications and devices, such as electromagnetic wave interference shielding, electronic devices, and fuel cells. While several approaches have been developed for synthesizing carbon nanotubes and carbon-black-based polymer nanocomposites, most studies have focused on the simple blending of the carbon material with a polymer matrix. However, this results in uncontrolled interactions between the carbon filler and the polymer chains, leading to the agglomeration of the carbon filler. Herein, we report a new strategy for synthesizing sulfonated polystyrene (PSS)-grafted carbon black nanoparticles (NPs) via surface-initiated atom-transfer radical polymerization. Treatments with O2 plasma and H2O2 result in the effective attachment of the appropriate initiator to the carbon black NPs, thus allowing for the controlled formation of the PSS brushes. The high polymeric processability and desirable mechanical properties of the PSS-grafted carbon black NPs enable them suitable for use in nonfluorinated-hydrocarbon-based polymer electrolyte membranes for fuel cells, which must exhibit high proton conductivity without interrupting the network of channels consisting of ionic clusters (i.e., sulfonic acid moieties).
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