Surface-initiated atom transfer radical polymerization of glycidyl methacrylate and styrene from boron nitride nanotubes
Surface-initiated atom transfer radical polymerization of glycidyl methacrylate and styrene from boron nitride nanotubes
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DOI：
10.1039/c3tc32511c
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发表时间：
2014-01-01
影响因子：
6.4
通讯作者：
Grayson, Scott M.
中科院分区：
文献类型：
--
作者：
Ejaz, Muhammad;Rai, Satish C.;Grayson, Scott M.
介绍了用聚甲基丙烯酸缩水甘油酯（PGMA）和聚苯乙烯（PSt）刷接枝氮化硼纳米管（BNNT）。这种用聚合物刷对BNNT的表面改性有效地实现，仅涉及两个步骤：通过一步自由基加成法在BNNT表面上引入苄基溴ATRP引发位点和从引发剂固定的BNNT表面引发GMA或St的表面引发原子转移自由基聚合（SI-ATRP）。采用傅里叶变换红外光谱（FTIR）、热重分析、扫描电子显微镜（SEM）和透射电子显微镜（TEM）对杂化材料的结构和性能进行了表征。杂化材料的FTIR分析显示接枝聚合物（PGMA和PSt）的红外信号特征，而SEM和TEM图像清楚地显示在BNNT表面上聚合物接枝物的形成。
Boron nitride nanotubes (BNNTs) grafted with polyglycidyl methacrylate (PGMA) and polystyrene (PSt) brushes are described. This surface modification of BNNTs with polymer brushes is efficiently achieved involving only two steps: the introduction of benzyl bromide ATRP initiating sites on the BNNTs' surface by a one-step radical addition method and the surface- initiated atom transfer radical polymerization (SI-ATRP) of GMA or St from the initiator immobilized BNNTs surface. The structure and properties of the resultant hybrid materials are characterized by Fourier transform infrared spectroscopy (FTIR), thermogravimetric analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The FTIR analysis of hybrid materials shows infrared signals characteristic of the grafted polymers (PGMA and PSt) while SEM and TEM images clearly show the formation of polymer grafts on the BNNT surface.