This work has demonstrated that a novel amphiphilic poly(epichlorohydrine)-graft-polystyrene (PECH-g-PS) copolymer at 34:66 wt% was synthesized via atom transfer radical polymerization (ATRP) of styrene using PECH as a macroinitiator. The structure of the graft copolymer was characterized by nuclear magnetic resonance (1H NMR) and FTIR spectroscopy, demonstrating that the “grafting from” method using ATRP was successful. The self-assembled graft copolymer was used as a template film for thein-situ growth of silver nanoparticles from AgCF₃SO₃ precursor under UV irradiation. Thein situ formation of silver nanoparticles with 6-8 nm in average size in thesolid state template film was confirmed by transmission electron microscopy (TEM), UV-visible spectroscopy and wide angle X-ray scattering (WAXS). Differential scanning calorimetry (DSC) also displayed the selective incorporation and thein situ formation of silver nanoparticles within the hydrophilic PECH domains, probably due to stronger interaction of the silvers with the ether oxygens of PECH backbone than that with hydrophobic PS side chains.

中文翻译：

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使用两亲性聚环氧氯丙烷-g-苯乙烯薄膜模板化形成银纳米颗粒

这项工作表明，使用PECH作为大分子引发剂，通过苯乙烯的原子转移自由基聚合（ATRP）合成了34:66 wt％的新型两亲性聚（表氯醇）-接枝-聚苯乙烯（PECH- g -PS）共聚物。接枝共聚物的结构通过核磁共振（1 H NMR）和FTIR光谱进行了表征，表明使用ATRP的“接枝”方法是成功的。自组装接枝共聚物用作模板膜，用于在紫外线照射下从AgCF ₃ SO ₃前体原位生长银纳米颗粒。在原位形成的银与在平均尺寸6-8纳米颗粒通过透射电子显微镜（TEM），紫外可见光谱和广角X射线散射（WAXS）确认了固态模板膜。差示扫描量热法（DSC）还显示了亲水性PECH域内银纳米粒子的选择性结合和原位形成，这可能是由于银与PECH主链的醚氧的相互作用比与疏水性PS侧链的相互作用更强。