Nondestructive Functionalization of Graphene by Surface-Initiated Atom Transfer Radical Polymerization: An Ideal Nanofiller for Poly(p-phenylene benzobisoxazole) Fibers
Nondestructive Functionalization of Graphene by Surface-Initiated Atom Transfer Radical Polymerization: An Ideal Nanofiller for Poly(p-phenylene benzobisoxazole) Fibers
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通过表面引发原子转移自由基聚合对石墨烯进行无损功能化：聚对亚苯基苯并二恶唑纤维的理想纳米填料
DOI：
10.1021/acs.macromol.6b02694
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发表时间：
2017-02
期刊：
影响因子：
5.5
通讯作者：
Huang Yudong
中科院分区：
文献类型：
--
作者：
Hu Zhen;Shao Qing;Moloney Mark G.;Xu Xirong;Zhang Dayu;Li Jun;Zhang Chunhua;Huang Yudong
一个直接的和非破坏性的策略，从石墨烯表面生长聚合物的证明。该技术涉及通过一步环加成的二芳基卡宾的引发剂的共价连接，随后通过使用原子转移自由基聚合（ATRP）的甲基丙烯酸2-羟乙酯（HEMA）的聚合。功能化策略显示出显着增加所得材料（PHEMA-G）的溶解度，并使石墨烯的结构基本上保持完整。通过一锅法聚合和干喷湿纺工艺制备了PHEMA-G/聚对苯撑苯并二恶唑（PBO）复合纤维。在非常低的PHEMA-G负载量（1.0重量%）下，纳米复合纤维表现出3.22 GPa的拉伸强度（比PBO高51.2%）和139.3 GPa的杨氏模量（比PBO高33.7%）。这代表了优异的增强效率，优于石墨烯/PBO纤维系统的其他报道，并表明该材料适用于…
A direct and nondestructive strategy for growing polymers from the surface of graphene is demonstrated. The technique involves the covalent attachment of an initiator via one-step cycloaddition of a diarylcarbene, followed by the polymerization of 2-hydroxyethyl methacrylate (HEMA) using atom transfer radical polymerization (ATRP). The functionalization strategy is shown to significantly increase the solubility of the resulting materials (PHEMA-G) and leave the structure of the graphene largely intact. Importantly, the PHEMA-G/poly(p-phenylene benzobisoxazole) (PBO) composite fibers could be obtained by a one-pot polymerization and dry-jet wet spinning process. The nanocomposite fibers exhibited a tensile strength of 3.22 GPa (51.2% higher than PBO) and Young’s modulus of 139.3 GPa (33.7% higher than PBO) at very low PHEMA-G loading (1.0 wt %). This represents an excellent reinforcing efficiency, better than other reports of the graphene/PBO fibers system, and indicates that this material is suitable for ...
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