Microencapsulation of oil with poly(styrene-N,N-dimethylaminoethyl methacrylate) by SPG emulsification technique: Effects of conversion and composition of oil phase
文献类型：期刊论文
| 作者 | Ma, GH; Su, ZG; Omi, S; Sundberg, D; Stubbs, J |
| 刊名 | JOURNAL OF COLLOID AND INTERFACE SCIENCE
 |
| 出版日期 | 2003-10-15 |
| 卷号 | 266期号:2页码:282-294 |
| 关键词 | Shirasu porous glass emulsification narrow size distribution polystyrene microencapsulation suspension polymerization N hexadecane N-dimethylaminoethyl methacrylate |
| ISSN号 | 0021-9797 |
| 其他题名 | J. Colloid Interface Sci. |
| 中文摘要 | Microcapsules with narrow size distribution, in which hexadecane (HD) was used as a oily core and poly(styrene-co-NN-dimethylamino-ethyl methacrylate) [P(St-DMAEMA)] as a wall, were prepared by a Shirasu porous glass (SPG) emulsification technique and a subsequent suspension polymerization process. That is, a mixture of St monomer, DMAEMA monomer, HD, and NN'-azobis(2,4-dimethylvaleronitrile) initiator was permeated through the uniform pores of an SPG membrane into a continuous phase containing a poly(vinylpyrrolidone), sodium lauryl sulfate, and sodium nitrite water-soluble inhibitor by applying a pressure, to form uniform droplets. Then, the droplets were polymerized at 70 degreesC. It was found that HD was encapsulated completely only when conversion was quite high, irrespective of whether a DMAEMA hydrophilic monomer was incorporated into the polymer. As the amount of HD increased, HD was more easily encapsulated by the polymer. In order to clarify the reason for such unique behavior, a simulation was carried out, taking the St monomer partition in the HD phase and PSt wall phase into the consideration. It was found that the main reason HD could not be encapsulated completely by PSt when conversion was lower was that the interfacial tension of the HD phase with water and the PSt phase with water got closer. As a result, both HD and PSt can come in contact with the water phase. (C) 2003 Elsevier Inc. All rights reserved. |
| 英文摘要 | Microcapsules with narrow size distribution, in which hexadecane (HD) was used as a oily core and poly(styrene-co-NN-dimethylamino-ethyl methacrylate) [P(St-DMAEMA)] as a wall, were prepared by a Shirasu porous glass (SPG) emulsification technique and a subsequent suspension polymerization process. That is, a mixture of St monomer, DMAEMA monomer, HD, and NN'-azobis(2,4-dimethylvaleronitrile) initiator was permeated through the uniform pores of an SPG membrane into a continuous phase containing a poly(vinylpyrrolidone), sodium lauryl sulfate, and sodium nitrite water-soluble inhibitor by applying a pressure, to form uniform droplets. Then, the droplets were polymerized at 70 degreesC. It was found that HD was encapsulated completely only when conversion was quite high, irrespective of whether a DMAEMA hydrophilic monomer was incorporated into the polymer. As the amount of HD increased, HD was more easily encapsulated by the polymer. In order to clarify the reason for such unique behavior, a simulation was carried out, taking the St monomer partition in the HD phase and PSt wall phase into the consideration. It was found that the main reason HD could not be encapsulated completely by PSt when conversion was lower was that the interfacial tension of the HD phase with water and the PSt phase with water got closer. As a result, both HD and PSt can come in contact with the water phase. (C) 2003 Elsevier Inc. All rights reserved. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Physical |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | MORPHOLOGY DEVELOPMENT ; MICROSPHERES ; MICROCAPSULES ; PARTICLES |
| 收录类别 | SCI |
| 原文出处 | |
| 语种 | 英语 |
| WOS记录号 | WOS:000185782400008 |
| 公开日期 | 2013-11-08 |
| 版本 | 出版稿 |
| 源URL | [http://ir.ipe.ac.cn/handle/122111/5310]  |
| 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, Natl Key Lab Biochem Engn, Beijing 100080, Peoples R China 2.Tokyo Univ Agr & Technol, Grad Sch Bioapplicat & Syst Engn, Tokyo 1848588, Japan 3.Univ New Hampshire, Dept Chem Engn, Polymer Res Grp, Durham, NH 03824 USA |
| 推荐引用方式 GB/T 7714 | Ma, GH,Su, ZG,Omi, S,et al. Microencapsulation of oil with poly(styrene-N,N-dimethylaminoethyl methacrylate) by SPG emulsification technique: Effects of conversion and composition of oil phase[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2003,266(2):282-294. |
| APA | Ma, GH,Su, ZG,Omi, S,Sundberg, D,&Stubbs, J.(2003).Microencapsulation of oil with poly(styrene-N,N-dimethylaminoethyl methacrylate) by SPG emulsification technique: Effects of conversion and composition of oil phase.JOURNAL OF COLLOID AND INTERFACE SCIENCE,266(2),282-294. |
| MLA | Ma, GH,et al."Microencapsulation of oil with poly(styrene-N,N-dimethylaminoethyl methacrylate) by SPG emulsification technique: Effects of conversion and composition of oil phase".JOURNAL OF COLLOID AND INTERFACE SCIENCE 266.2(2003):282-294. |
入库方式： OAI收割
来源：过程工程研究所
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