The mophological evolution of water droplets during incomplete phase inversion process
文献类型：期刊论文
| 作者 | Zhu, Y; Yang, ZZ; Zhao, DL |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2000-08-01 |
| 期号 | 4页码:514-517 |
| 关键词 | Incomplete Phase Inversion Dispersed Phase Morphological Evolution Dynamic Coalescence |
| ISSN号 | 1000-3304 |
| 英文摘要 | Phase inversion emulsification technique is an effective physical method to prepare waterborne dispersions of polymeric resins, In this study, a multi-hollow epoxy resin sphere was obtained by incomplete phase inversion emulsification. The dynamic morphological evolution of water droplets dispersed in bisphenol. A epoxy resin/emulsifier (a multi-block copolymer) during phase inversion process was investigated with scanning electron microscopy. It is shown that small discrete water droplets are dispersed in the epoxy resin continuous phase at low water content. In this case, the dynamic coalescence among the small water droplets is ignored. With increasing water content, the dynamic coalescence becomes remarkable and larger water drops are formed by the coalescence among the small water droplets. The larger water drops are randomly distributed within the continuous phase. Meanwhile, some necklace like structures with varied length co-exist with the small water droplets and larger water drops. Incomplete phase inversion is achieved through the coalescence among the larger water drops, and some small water droplets are entrapped therein, In this case, a kind of multi-hollow sphere is obtained. While, in some local regions, all the nearest small water droplets coalesce simultaneously to be continuous phase to achieve complete phase inversion, and small discrete waterborne particles are obtained. The dynamic coalescence among the small water droplets dispersed in epoxy resin continuous phase could be analyzed in terms of the improved Smoluchowski equation. |
| 语种 | 英语 |
| WOS记录号 | WOS:000089003100028 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/75911]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Zhu, Y |
| 作者单位 | Chinese Acad Sci, Inst Chem, Ctr Mol Sci, Polymer Phys Lab, Beijing 100080, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Y,Yang, ZZ,Zhao, DL. The mophological evolution of water droplets during incomplete phase inversion process[J]. ACTA POLYMERICA SINICA,2000(4):514-517. |
| APA | Zhu, Y,Yang, ZZ,&Zhao, DL.(2000).The mophological evolution of water droplets during incomplete phase inversion process.ACTA POLYMERICA SINICA(4),514-517. |
| MLA | Zhu, Y,et al."The mophological evolution of water droplets during incomplete phase inversion process".ACTA POLYMERICA SINICA .4(2000):514-517. |
入库方式： OAI收割
来源：化学研究所
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