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Porogen effects in synthesis of uniform micrometer-sized poly(divinylbenzene) microspheres with high surface areas
Alternative TitleJ. Colloid Interface Sci.
Hao, Dong-xia1,2; Gong, Fang-ling1; Wei, Wei1; Hu, Guo-hua3,4; Ma, Guang-hui1; Su, Zhi-guo1
2008-07-01
Source PublicationJOURNAL OF COLLOID AND INTERFACE SCIENCE
ISSN0021-9797
Volume323Issue:1Pages:52-59
AbstractA new method of synthesizing uniform poly(divinylbenzene) (polyDVB) microspheres with high specific surface areas was designed by combining Shirasu porous glass (SPG) membrane emulsification, suspension polymerization, and post-crosslinking techniques. It was shown that the physicochemical properties of porogens have a great influence on the size distribution and porous features of microspheres. The low aqueous solubility of porogen facilitated preparation of uniform emulsions and microspheres, and high aqueous solubility led to polydispersed emulsions and poor microsphere yields. Such aqueous solubility effects can be tailored by adding a low molecular weight polystyrene (LPST) as costabilizer in porogen, thus improving the uniformity of microspheres. Moreover, different affinities of porogens for copolymers demonstrate various contributions to specific surface areas of microspheres in suspension polymerization especially post-crosslinking. Solvating porogen requires a much higher addition than nonsolvating porogen to obtain equal specific surface areas in polymerization, but has more potential to enhance the specific surface area in post-crosslinking. Two kinds of uniform microspheres were obtained with high specific surface areas, up to 706.6 m(2)/g by heptane and 937.5 m(2)/g by toluene. (C) 2008 Elsevier Inc. All rights reserved.; A new method of synthesizing uniform poly(divinylbenzene) (polyDVB) microspheres with high specific surface areas was designed by combining Shirasu porous glass (SPG) membrane emulsification, suspension polymerization, and post-crosslinking techniques. It was shown that the physicochemical properties of porogens have a great influence on the size distribution and porous features of microspheres. The low aqueous solubility of porogen facilitated preparation of uniform emulsions and microspheres, and high aqueous solubility led to polydispersed emulsions and poor microsphere yields. Such aqueous solubility effects can be tailored by adding a low molecular weight polystyrene (LPST) as costabilizer in porogen, thus improving the uniformity of microspheres. Moreover, different affinities of porogens for copolymers demonstrate various contributions to specific surface areas of microspheres in suspension polymerization especially post-crosslinking. Solvating porogen requires a much higher addition than nonsolvating porogen to obtain equal specific surface areas in polymerization, but has more potential to enhance the specific surface area in post-crosslinking. Two kinds of uniform microspheres were obtained with high specific surface areas, up to 706.6 m(2)/g by heptane and 937.5 m(2)/g by toluene. (C) 2008 Elsevier Inc. All rights reserved.
KeywordPoly(Divinylbenzene) Uniform Sized High Specific Area Membrane Emulsification Post-crosslinking
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1016/j.jcis.2008.03.039
URL查看原文
Indexed BySCI
Language英语
WOS KeywordMEMBRANE EMULSIFICATION TECHNIQUE ; DIVINYLBENZENE COPOLYMERS ; POROUS STRUCTURE ; HYPERCROSSLINKED POLYSTYRENE ; CHROMATOGRAPHIC PROPERTIES ; COMPOSITE MICROSPHERES ; POLYMERIC MICROSPHERES ; LIQUID-CHROMATOGRAPHY ; STATIONARY PHASES ; CROSS-LINKING
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000256646600007
Citation statistics
Document Type期刊论文
Version出版稿
Identifierhttp://ir.ipe.ac.cn/handle/122111/2761
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.Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China
3.CNRS ENSIC INPL, Lab Chem Engn Sci, F-54001 Nancy, France
4.Maison Univ, Inst Univ France, F-75005 Paris, France
Recommended Citation
GB/T 7714
Hao, Dong-xia,Gong, Fang-ling,Wei, Wei,et al. Porogen effects in synthesis of uniform micrometer-sized poly(divinylbenzene) microspheres with high surface areas[J]. JOURNAL OF COLLOID AND INTERFACE SCIENCE,2008,323(1):52-59.
APA Hao, Dong-xia,Gong, Fang-ling,Wei, Wei,Hu, Guo-hua,Ma, Guang-hui,&Su, Zhi-guo.(2008).Porogen effects in synthesis of uniform micrometer-sized poly(divinylbenzene) microspheres with high surface areas.JOURNAL OF COLLOID AND INTERFACE SCIENCE,323(1),52-59.
MLA Hao, Dong-xia,et al."Porogen effects in synthesis of uniform micrometer-sized poly(divinylbenzene) microspheres with high surface areas".JOURNAL OF COLLOID AND INTERFACE SCIENCE 323.1(2008):52-59.
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