Light-Mediated Thiol鈥揈ne Polymerization in Miniemulsion: A Fast Route to Semicrystalline Polysulfide Nanoparticles
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- 作者：Florent Jasinski ; Emeline Lobry ; Bassam Tarablsi ; Abraham Chemtob ; C茅line Croutx茅-Barghorn ; Didier Le Nouen ; Adrien Criqui
- 刊名：ACS Macro Letters
- 出版年：2014
- 出版时间：September 16, 2014
- 年：2014
- 卷：3
- 期：9
- 页码：958-962
- 全文大小：259K
- ISSN：2161-1653
文摘
Historically, the synthesis of aqueous polymer dispersions has focused on radical chain-growth polymerization of low-cost acrylate or styrene emulsions. Herein, we demonstrate the potential of UV-initiated thiol鈥揺ne step-growth radical polymerization, departing from a nontransparent difunctional monomer miniemulsion based on ethylene glycol dithiol and diallyl adipate. Performed without solvent and at ambient conditions, the photopolymerization process is energy-effective, environmentally friendly, and ultrafast, leading to full monomer consumption in 2 s, upon irradiating a miniemulsion contained in a 1 mm thick quartz cell microreactor. The resultant linear poly(thioether ester) particles have an average diameter of 130 nm. After water evaporation, they yield a clear elastomeric film combining chemical resistance and high degree of crystallinity (55%).