当前位置：
X-MOL 学术
›
Macromol. React. Eng.
›
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.)
Encapsulation of Phase Change Materials via Interfacial Miniemulsion Polymerization for High Thermal Energy Storage Density
Macromolecular Reaction Engineering ( IF 1.8 ) Pub Date : 2022-01-19 , DOI: 10.1002/mren.202100049 Yuhai Zhao 1 , Yingwu Luo 1
Macromolecular Reaction Engineering ( IF 1.8 ) Pub Date : 2022-01-19 , DOI: 10.1002/mren.202100049 Yuhai Zhao 1 , Yingwu Luo 1
Affiliation
|
Phase change material (PCM) capsules have potential applications as a thermal management material in energy-efficient buildings. It is desirable for PCM capsules to have high core-loading and sub-micrometer particle size. Herein, it is reported that interfacial reversible addition-fragmentation chain transfer (RAFT) miniemulsion polymerization can be a convenient method to synthesize high PCM loading polymeric capsule latex. It is found that increasing particle size should be helpful to obtain well-defined capsules of high PCM loading but post-addition of surfactant should be carried out to remain the colloidal stability during polymerization. In the case of high PCM loading, a limiting conversion is observed. Increasing crosslinker (DVB) level up to 20 wt% based on monomers can increase the limiting conversion up to 94%. The well-defined paraffin capsules of 365 nm in diameter is synthesized with 67 wt% PCM loading. The paraffin capsules have a crystallization/melting heat around 105 J g−1. Replacing paraffin with pure n-octadecane, the crystallization/melting heat is increased up to 144 J g−1.
中文翻译：
通过界面细乳液聚合封装相变材料以提高热能存储密度
相变材料 (PCM) 胶囊在节能建筑中作为热管理材料具有潜在应用。PCM 胶囊希望具有高核心负载和亚微米粒径。在此，据报道，界面可逆加成-断裂链转移（RAFT）细乳液聚合可以是合成高PCM负载聚合物胶囊胶乳的便捷方法。发现增加粒径应该有助于获得高 PCM 负载的明确胶囊，但应进行表面活性剂的后添加以在聚合过程中保持胶体稳定性。在高 PCM 负载的情况下，观察到有限的转换。基于单体将交联剂 (DVB) 的含量提高到 20 wt% 可以将极限转化率提高到 94%。用 67 wt% 的 PCM 负载合成了直径为 365 nm 的明确石蜡胶囊。石蜡胶囊的结晶/熔化热约为 105 J g-1。用纯正十八烷代替石蜡，结晶/熔化热增加到144 J g -1。
更新日期：2022-01-19
中文翻译：
通过界面细乳液聚合封装相变材料以提高热能存储密度
相变材料 (PCM) 胶囊在节能建筑中作为热管理材料具有潜在应用。PCM 胶囊希望具有高核心负载和亚微米粒径。在此，据报道，界面可逆加成-断裂链转移（RAFT）细乳液聚合可以是合成高PCM负载聚合物胶囊胶乳的便捷方法。发现增加粒径应该有助于获得高 PCM 负载的明确胶囊，但应进行表面活性剂的后添加以在聚合过程中保持胶体稳定性。在高 PCM 负载的情况下，观察到有限的转换。基于单体将交联剂 (DVB) 的含量提高到 20 wt% 可以将极限转化率提高到 94%。用 67 wt% 的 PCM 负载合成了直径为 365 nm 的明确石蜡胶囊。石蜡胶囊的结晶/熔化热约为 105 J g-1。用纯正十八烷代替石蜡，结晶/熔化热增加到144 J g -1。
京公网安备 11010802027423号