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Preparation of uniform-sized polystyrene-polyacrylamide composite microspheres from a W/O/W emulsion by membrane emulsification technique and subsequent suspension polymerization
Alternative TitleMacromolecules
Ma, GH; Sone, H; Omi, S
2004-04-20
Source PublicationMACROMOLECULES
ISSN0024-9297
Volume37Issue:8Pages:2954-2964
AbstractUniform-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.
Keyword2-hydroxyethyl Methacrylate Glass Membrane Particles Dispersions Mechanism Oligomer Kinetics
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1021/ma035316g
URL查看原文
Indexed BySCI
Language英语
WOS Keyword2-HYDROXYETHYL METHACRYLATE ; GLASS MEMBRANE ; PARTICLES ; DISPERSIONS ; MECHANISM ; OLIGOMER ; KINETICS
WOS Research AreaPolymer Science
WOS SubjectPolymer Science
WOS IDWOS:000220898600041
Citation statistics
Cited Times:80[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/4999
Collection研究所(批量导入)
Affiliation1.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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