Knowledge Management System Of Institute of process engineering,CAS
| Preparation of uniform-sized polystyrene-polyacrylamide composite microspheres from a W/O/W emulsion by membrane emulsification technique and subsequent suspension polymerization | |
| Alternative Title | Macromolecules |
| Ma, GH; Sone, H; Omi, S | |
| 2004-04-20 | |
| Source Publication | MACROMOLECULES
 |
| ISSN | 0024-9297 |
| Volume | 37Issue:8Pages:2954-2964 |
| Abstract | Uniform-sized polystyrene/polyacrylamide (PST-PAAm) composite microspheres were prepared from a water/oil/water (W/O/W) emulsion by using a glass membrane emulsification technique. An AAm aqueous solution was emulsified into an oil phase containing ST initiator, Span 85, and PST by ultrasonification to obtain W/O primary emulsion. Then, the W/O emulsion was pressed through the uniform pores (5.25 mum) of a SPG (Shirasu porous glass) membrane into an outer aqueous solution to form uniform-sized W/O/W emulsion. PST was added to increase the viscosity of oil phase, retarding the phase separation between inner water phase and oil phase during the membrane emulsification process. After the W/O/W emulsion was polymerized, the uniform-sized composite particles around 20 mum were obtained. It was found that the spherical PAAm microdomains were distributed inside and on the surface of a composite particle; the number of PAAm domains on the surface was controllable by varying cross-linking density of the PST phase.; Uniform-sized polystyrene/polyacrylamide (PST-PAAm) composite microspheres were prepared from a water/oil/water (W/O/W) emulsion by using a glass membrane emulsification technique. An AAm aqueous solution was emulsified into an oil phase containing ST initiator, Span 85, and PST by ultrasonification to obtain W/O primary emulsion. Then, the W/O emulsion was pressed through the uniform pores (5.25 mum) of a SPG (Shirasu porous glass) membrane into an outer aqueous solution to form uniform-sized W/O/W emulsion. PST was added to increase the viscosity of oil phase, retarding the phase separation between inner water phase and oil phase during the membrane emulsification process. After the W/O/W emulsion was polymerized, the uniform-sized composite particles around 20 mum were obtained. It was found that the spherical PAAm microdomains were distributed inside and on the surface of a composite particle; the number of PAAm domains on the surface was controllable by varying cross-linking density of the PST phase. |
| Keyword | 2-hydroxyethyl Methacrylate Glass Membrane Particles Dispersions Mechanism Oligomer Kinetics |
| Subtype | Article |
| WOS Headings | Science & Technology ; Physical Sciences |
| DOI | 10.1021/ma035316g |
| URL | 查看原文 |
| Indexed By | SCI |
| Language | 英语 |
| WOS Keyword | 2-HYDROXYETHYL METHACRYLATE ; GLASS MEMBRANE ; PARTICLES ; DISPERSIONS ; MECHANISM ; OLIGOMER ; KINETICS |
| WOS Research Area | Polymer Science |
| WOS Subject | Polymer Science |
| WOS ID | WOS:000220898600041 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Version | 出版稿 |
| Identifier | http://ir.ipe.ac.cn/handle/122111/4999 |
| Collection | 研究所（批量导入） |
| Affiliation | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100080, Peoples R China 2.Tokyo Univ Agr & Technol, Grad Sch Bioapplicat & Syst Engn, Koganei, Tokyo 1848588, Japan |
| Recommended Citation GB/T 7714 | Ma, GH,Sone, H,Omi, S. Preparation of uniform-sized polystyrene-polyacrylamide composite microspheres from a W/O/W emulsion by membrane emulsification technique and subsequent suspension polymerization[J]. MACROMOLECULES,2004,37(8):2954-2964. |
| APA | Ma, GH,Sone, H,&Omi, S.(2004).Preparation of uniform-sized polystyrene-polyacrylamide composite microspheres from a W/O/W emulsion by membrane emulsification technique and subsequent suspension polymerization.MACROMOLECULES,37(8),2954-2964. |
| MLA | Ma, GH,et al."Preparation of uniform-sized polystyrene-polyacrylamide composite microspheres from a W/O/W emulsion by membrane emulsification technique and subsequent suspension polymerization".MACROMOLECULES 37.8(2004):2954-2964. |
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