In order to contribute to a better understanding of the emulsion polymerization of vinylidene fluoride (VDF), an experimental study under conditions of temperature and pressure similar to those found in industrial processes was carried out. It is shown that the initial rate of polymerization is strongly influenced by the agitation of the reactor, with the rate of reaction increasing as the rate of agitation increases. In addition, using a more efficient impeller also increases the polymerization. It is proposed that this is due to mass transfer limitations. This idea is confirmed by a similar dependence of the average molecular weight on agitation. Experimental data also shows that particles are formed by homogeneous coagulative nucleation. It is proposed that particle nucleation occurs throughout the polymerization, and that a competition between controlled coagulation and particle generation governs the rate of reaction.

中文翻译：

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偏二氟乙烯的乳液聚合：混合和反应条件对聚合起始速率的影响

为了有助于更好地了解偏二氟乙烯 (VDF) 的乳液聚合，在与工业过程中发现的温度和压力条件相似的条件下进行了实验研究。结果表明，聚合反应的初始速率受到反应器搅拌的强烈影响，反应速率随着搅拌速率的增加而增加。此外，使用更高效的叶轮也增加了聚合。建议这是由于传质限制。平均分子量对搅拌的类似依赖性证实了这一想法。实验数据还表明，颗粒是由均匀凝固成核形成的。建议粒子成核在整个聚合过程中发生，