Study of the effect of porogen amount on formation of uniform polystyrene hollow particles prepared by SPG membrane emulsification technique
文献类型：会议论文
| 作者 | Ma, G. H. ; Su, Z. G. ; Omi, S. |
| 出版日期 | 2004 |
| 会议名称 | Conference on Polymer Colloids - Preparation and Properties of Aqueous Polymer Dispersions |
| 会议日期 | JUL 14-19, 2002 |
| 会议地点 | Kloster Irsee, GERMANY |
| 关键词 | hollow particle SPG membrane emulsification hexadecane polystyrene methacrylate) composite microspheres polymer particles morphology emulsion size |
| 期号 | 124 |
| 页码 | 138-142 |
| 中文摘要 | Uniform polystyrene (PSt) hollow particles were prepared by combining a Shirasu porous glass (SPG) emulsification technique and a subsequent suspension polymerization process. The oil phase mainly containing St, hydrophilic monomer, hexadecane (HD), and initiator, was pressed through the uniform pores of a SPG membrane into the continuous phase to form uniform droplets. Then, the droplets were polymerized at 70 degreesC. HD was used as a porogen for formation of hollow particles. The amount of HD was varied in order to clarify the formation mechanism. It was found that rapid phase separation between HD and PSt in the initial stage of polymerization was responsible for the formation of hollow particle. When HD amount was low, rapid phase separation was induced by the rapid diffusion of monomer into the aqueous phase. This is because a large amount of new particles occurred, which sucked up greedily monomer from the aqueous phase. On the other hand, when HD amount was high, rapid phase separation was promoted by a large amount of HD, even secondary nucleation was prevented by increasing HD. |
| 收录类别 | CPCI |
| 会议网址 | |
| 会议录 | AQUEOUS POLYMER DISPERSIONS 丛书: PROGRESS IN COLLOID AND POLYMER SCIENCE
 |
| 会议录出版者 | Springer-Verlag Berlin |
| 语种 | 英语 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5023]  |
| 专题 | 过程工程研究所_生化工程国家重点实验室 |
| 推荐引用方式 GB/T 7714 |
Ma, G. H.,Su, Z. G.,Omi, S.. Study of the effect of porogen amount on formation of uniform polystyrene hollow particles prepared by SPG membrane emulsification technique[C]. 见:Conference on Polymer Colloids - Preparation and Properties of Aqueous Polymer Dispersions. Kloster Irsee, GERMANY. JUL 14-19, 2002. |
入库方式： OAI收割
来源：过程工程研究所
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