Preparation of hemispherical poly(4-vinylpyridine-co-butyl acrylate)/poly(styrene-co-butyl acrylate) composite microspheres by seeded preswelling emulsion polymerization
文献类型：期刊论文
| 作者 | Han, SH; Ma, GH; Du, YZ; Omi, S; Gu, LX |
| 刊名 | JOURNAL OF APPLIED POLYMER SCIENCE
 |
| 出版日期 | 2003-12-27 |
| 卷号 | 90期号:14页码:3811-3821 |
| 关键词 | emulsion polymerization colloid composites morphology swelling |
| ISSN号 | 0021-8995 |
| 其他题名 | J. Appl. Polym. Sci. |
| 中文摘要 | Seeded preswelling emulsion polymerization was carried out by using monodispersed poly(4-vinylpyridine-co-butyl acrylate) [P(4VP-BA)] particles as the seed, and styrene and butyl acrylate as the second-stage monomers under different polymerization conditions, to obtain hemispherical polystyrene (PST)-rich-P4VP-rich microspheres. Prior to polymerization, toluene was added into the preswelling system together with the second-stage monomers. It was found that, with the increase of the amount of toluene, the particle morphology showed a tendency toward desirable hemispherical structure, and the colloidal stability of composite latex was improved. When the weight ratio of toluene/seed latex was increased up to 7.5/40 (g/g), the stable hemispherical latex could be obtained. However, when toluene was not added, the coagulum formed on the wall of the reactor during polymerization, and the composite particles with multiple surface domains (such as sandwich-like, popcorn-like) were formed. In addition, the final morphology of composite particles was influenced by the polarity of the seed crosslinker and the hydrophilicity of the second-stage initiator, which could affect the mobility of poly(styrene-co-butyl acrylate) [P(ST-BA)] chains. The morphology development during the polymerization was investigated in detail, and a schematic model was derived to depict the formation mechanism of hemispherical P(4VPBA)/P(ST-BA) composite microspheres. The results revealed that the mobility of the P(ST-BA) chains influenced the diffusion of the P(ST-BA) domains on the surface of the P(4VP-BA) matrix. When the mobility of the P(ST-BA) chains allowed small-size P(ST-BA) domains to coalesce into one larger domain, complete phase-separated morphology (hemisphere) could be achieved. (C) 2003 Wiley Periodicals, Inc. |
| 英文摘要 | Seeded preswelling emulsion polymerization was carried out by using monodispersed poly(4-vinylpyridine-co-butyl acrylate) [P(4VP-BA)] particles as the seed, and styrene and butyl acrylate as the second-stage monomers under different polymerization conditions, to obtain hemispherical polystyrene (PST)-rich-P4VP-rich microspheres. Prior to polymerization, toluene was added into the preswelling system together with the second-stage monomers. It was found that, with the increase of the amount of toluene, the particle morphology showed a tendency toward desirable hemispherical structure, and the colloidal stability of composite latex was improved. When the weight ratio of toluene/seed latex was increased up to 7.5/40 (g/g), the stable hemispherical latex could be obtained. However, when toluene was not added, the coagulum formed on the wall of the reactor during polymerization, and the composite particles with multiple surface domains (such as sandwich-like, popcorn-like) were formed. In addition, the final morphology of composite particles was influenced by the polarity of the seed crosslinker and the hydrophilicity of the second-stage initiator, which could affect the mobility of poly(styrene-co-butyl acrylate) [P(ST-BA)] chains. The morphology development during the polymerization was investigated in detail, and a schematic model was derived to depict the formation mechanism of hemispherical P(4VPBA)/P(ST-BA) composite microspheres. The results revealed that the mobility of the P(ST-BA) chains influenced the diffusion of the P(ST-BA) domains on the surface of the P(4VP-BA) matrix. When the mobility of the P(ST-BA) chains allowed small-size P(ST-BA) domains to coalesce into one larger domain, complete phase-separated morphology (hemisphere) could be achieved. (C) 2003 Wiley Periodicals, Inc. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Polymer Science |
| 研究领域[WOS] | Polymer Science |
| 关键词[WOS] | MEMBRANE EMULSIFICATION TECHNIQUE ; PARTICLE MORPHOLOGY ; DISPERSION POLYMERIZATION ; INTERFACIAL PHENOMENA ; LATEX-PARTICLES ; MICROGEL ; NETWORKS |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000186374700008 |
| 公开日期 | 2013-11-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5334]  |
| 专题 | 过程工程研究所_研究所（批量导入） |
| 作者单位 | 1.Chinese Acad Sci, Inst Proc Engn, State Key Lab Biochem Engn, Beijing 100080, Peoples R China 2.Donghua Univ, Coll Mat Sci & Engn, Shanghai 200051, Peoples R China 3.Inst Biol Resources & Funct, Natl Inst AIST, Tsukuba, Ibaraki 3058566, Japan 4.Tokyo Univ Agr & Technol, Grad Sch Bioappl & Syst Engn, Tokyo 1848588, Japan |
| 推荐引用方式 GB/T 7714 | Han, SH,Ma, GH,Du, YZ,et al. Preparation of hemispherical poly(4-vinylpyridine-co-butyl acrylate)/poly(styrene-co-butyl acrylate) composite microspheres by seeded preswelling emulsion polymerization[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2003,90(14):3811-3821. |
| APA | Han, SH,Ma, GH,Du, YZ,Omi, S,&Gu, LX.(2003).Preparation of hemispherical poly(4-vinylpyridine-co-butyl acrylate)/poly(styrene-co-butyl acrylate) composite microspheres by seeded preswelling emulsion polymerization.JOURNAL OF APPLIED POLYMER SCIENCE,90(14),3811-3821. |
| MLA | Han, SH,et al."Preparation of hemispherical poly(4-vinylpyridine-co-butyl acrylate)/poly(styrene-co-butyl acrylate) composite microspheres by seeded preswelling emulsion polymerization".JOURNAL OF APPLIED POLYMER SCIENCE 90.14(2003):3811-3821. |
入库方式： OAI收割
来源：过程工程研究所
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