Fine-tuning of functional poly(methylmethacrylate) nanoparticle size at the sub-100 nm scale using surfactant-free emulsion polymerization
Fine-tuning of functional poly(methylmethacrylate) nanoparticle size at the sub-100 nm scale using surfactant-free emulsion polymerization
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DOI：
10.1016/j.colsurfa.2010.05.037
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发表时间：
2010-08
期刊：
影响因子：
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通讯作者：
S. T. Camli;F. Buyukserin;M. Yavuz;G. Budak
中科院分区：
文献类型：
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作者：
S. T. Camli;F. Buyukserin;M. Yavuz;G. Budak
功能性聚甲基丙烯酸甲酯（PMMA）纳米粒子在从光子带隙材料到生物分子载体的各个研究领域都有着重要的应用。在此，我们介绍了一种传统的无表面活性剂的乳液聚合（SFEP）的方法，使功能的亚100纳米PMMA纳米粒子的生产，而不需要微波辐射。可以制备具有单分散尺寸分布的交联PMMA胶乳。使用动态光散射（DLS）进行颗粒表征研究。通过扫描电子显微镜（SEM）观察到球形和均匀尺寸的纳米颗粒。稳定的阳离子PMMA纳米颗粒分散体获得的所有配方中，颗粒电荷源于脒引发剂。通过使用含异硫氰酸酯的荧光团证实脒部分的存在。该方法的一个重要的吸引人的特征是通过简单地改变单体浓度在亚100 nm尺度下微调所得颗粒尺寸的能力。
Functional poly(methylmethacrylate) (PMMA) nanoparticles are of great use in various research areas from photonic band gap materials to biomolecule delivery vehicles. Herein, we introduce a conventional surfactant-free emulsion polymerization (SFEP) method that enables the production of functional sub-100nm PMMA nanoparticles without the need of microwave irradiation. Cross-linked PMMA latex having monodisperse size distribution can be prepared. Particle characterization studies were carried out using dynamic light scattering (DLS). Spherical and uniformly sized nanoparticles were observed by scanning electron microscopy (SEM). Stable cationic PMMA nanoparticle dispersions were obtained for all formulations where the particle charge stems from the amidine initiator. The presence of the amidine moieties was confirmed by using an isothiocyanate containing fluorophore. An important appealing feature of this method is the ability to fine-tune the resultant particle size at the sub-100nm scale by simply varying the monomer concentration.