Visible‐Light Emulsion Photopolymerization of Styrene,Angewandte Chemie International Edition

当前位置： X-MOL 学术 › Angew. Chem. Int. Ed. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Visible‐Light Emulsion Photopolymerization of Styrene
Angewandte Chemie International Edition ( IF 16.1 ) Pub Date : 2017-12-27 , DOI: 10.1002/anie.201710488
Frédéric Le Quéméner ₁ , Daniel Subervie _{1,

2} , Fabrice Morlet-Savary ₃ , Jacques Lalevée ₃ , Muriel Lansalot ₁ , Elodie Bourgeat-Lami ₁ , Emmanuel Lacôte _{1,

2}

Affiliation

The photopolymerization of styrene in emulsion is achieved in a conventional double‐wall reactor equipped with a LED ribbon coiled around the external glass wall. Styrene mixed to acridine orange is added to the water phase containing sodium dodecyl sulfate, a water‐soluble N‐heterocyclic carbene–borane and disulfide, and irradiated. Highly stable latexes are obtained, with particles up to a diameter of 300 nm. The ability to reach such large particle sizes via a photochemical process in a dispersed medium is due to the use of visible light: the photons in the visible range are less scattered by larger objects and thus penetrate and initiate better the polymerizations. They are also greener and cheaper to produce via LEDs, and much safer than UVs. The method presented does not require any specific glassware; it works at lower temperature and delivers larger particles compared to thermal processes at similar solids contents and surfactant concentrations.

中文翻译：

苯乙烯的可见光乳液光聚合

乳液中苯乙烯的光聚合反应是在传统的双壁反应器中完成的，该反应器配有缠绕在玻璃外壁上的LED色带。将与to啶橙混合的苯乙烯加入到含有十二烷基硫酸钠，水溶性N杂环卡宾-硼烷和二硫化物的水相中，并进行辐照。获得了高度稳定的胶乳，其粒径最大为300 nm。通过光化学过程在分散的介质中达到如此大的粒度的能力归因于可见光的使用：可见光范围内的光子较少被较大的物体散射，因此可以穿透并更好地引发聚合反应。通过LED生产它们也更绿色，更便宜，并且比紫外线更安全。提出的方法不需要任何特定的玻璃器皿；

更新日期：2017-12-27

点击分享查看原文

点击收藏

阅读更多本刊新发论文本刊介绍/投稿指南