【双语导读】来自液-液界面处的纳米粒子，RAFT技术
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Nanoparticles from liquid-liquid interfaces
来自液-液界面处的纳米粒子
May 22,2015 By Mara Staffilani
Interfacial miniemulsion polymerization has recently seen aquick development. It has been shown to be a facile and robust route to synthesize polymeric nanocapsules and hollow nanoparticles for different applications, ranging from therapeutics and stimuli-responsive release to coatings.
近日，界面的细乳液聚合技术已有快速的发展。它已被证明拥有一种快速稳健的路线来合成针对不同应用范围的纳米胶囊聚合物和空心纳米颗粒，将在治疗和刺激反应过程中释放其膜层。
Polymers are directly grown from a liquid-liquid interface in adefined, controllable way. Through the combination of the distinct droplet sizeand shape afforded from a miniemulsion polymerization technique, with theability to precisely control the growth of polymers via reversible addition-fragmentationchain-transfer (RAFT) polymerisation, it is now possible to direct the growthof polymers away from a liquid-liquid (droplet) interface.
通过确定可控制的方式，聚合物直接产生于液-液界面。通过组合不同分布液滴的尺寸大小和形状，那些液滴是可利用细乳液聚合作用技术，并且此技术能够精确地通过可逆加成断裂链转移聚合(RAFT)来控制聚合物的发展，指导聚合物的发展离开液-液(液滴)界面成为可能。
Polymerization from an interface hinges on confining the growing polymer to the periphery of the miniemulsion droplet. Thus, the nanocapsule ornanoparticle wall is built-up as polymerization proceeds affording a range ofparticle architectures. Since miniemulsion polymerization techniques conservedroplet size and number throughout polymerization, these initial properties canbe translated to the final polymeric particle. Further, it is necessary todesign a chain-transfer agent so polymerization is anchored at the interfaceand subsequent chain growth is directed either into, or out of the droplet.
其聚合作用是从受限制聚合物的界面铰接点发展到细乳液液滴的外围。因此,纳米胶囊或纳米粒子墙是由聚合物产生过程中提供一系列粒子体系结构拼接而成。由于自始至终的聚合作用，细乳液聚合技术使液滴大小和数目守恒，这些粒子的初始属性可以被转换成最终的聚合物粒子。进一步来讲，有必要设计一个链转移剂聚合，从而聚合作用可以固定在界面和随后的链增长中，或者直接进入,或者在液滴外围。
Adrian Fuchs andKristofer Thurecht summarize the up-to-date status of this exciting field.They highlight the investigations and the challenges faced in performing RAFT polymerization in a miniemulsion, the conditions required to create polymeric architectures, and the applications of these systems.
艾德瑞安·福克斯和 Kristof Thurecht 总结了这个激动人心领域的最新状态。在调查研究和所面临的挑战中他们强调了在细乳液聚合中执行可逆加成断裂链转移聚合(RAFT技术)、创建聚合体系结构所需的条件、这些系统的应用的问题。
如想深度阅读了解，敬请查阅论文：Interfacial RAFT Miniemulsion Polymerization: Architectures from an Interface
材料科学与工程编译。如需转载请联系mse_material@163.com。
文章来源：material news
今日编辑：溪谷