| MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES |
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| 作者姓名： | 倪明 陈柳生 贾世军 金熹高 戈守仁 高原淳 梶山千里 |
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| 作者单位： | Institute of Chemistry，The Chinese Academy of Sciences，Beijing 100080，China，Institute of Chemistry，The Chinese Academy of Sciences，Beijing 100080，China，Institute of Chemistry，The Chinese Academy of Sciences，Beijing 100080，China，Institute of Chemistry，The Chinese Academy of Sciences，Beijing 100080，China，Department of Materials Physics and Chemistry，Graduate School of Engineering，Kyushu University，Fukuoka 812，Japan，Department of Materials Physics and Chemistry，Graduate School of Engineering，Kyushu University，Fukuoka 812，Japan，Department of Materials Physics and Chemistry，Graduate School of Engineering，Kyushu University，Fukuoka 812，Japan |
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| 基金项目： | This work was supported by The National Key Project for Fundamental Research"Macromolecular Condensed State". |
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| 摘 要： | Tapping mode atomic force microscope has been applied to observe single-chain PMMAparticles which were stored for six months at room temperature after sprayed from verydilute solutions in good solvents, good/poor mixed solvents, and a theta solvent. Monodis-perse PMMA standards of molecular weights ranging from 7.90×10~4 to 1.3×10~6 wereused to investigate the effect of molecular weight oh the size of the single-chain PMMAparticles. These single-chain particles showed close to spherical shapes. The morphologyof single-chain PMMA particles of a given molecular weight was found to be identical inspite of different solvents used for solution spraying. Molecular weigh dependence of theparticle dimension was also found. The diameters of single-chain PMMA particles aftercorrection of tlp-geometry effect were compared to the values estimated from molecularweight and density.
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| 收稿时间： | 1997-04-18 |
MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES* |
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| NI Ming,CHEN Liusheng,JIA Shijun,JIN Xigao,GE Shouren,Atsushi TAKAHARA,Tisato KAJIYAMA.MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES[J].Chinese Journal of Polymer Science,1997,0(4):368-372. |
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| Authors: | NI Ming CHEN Liusheng JIA Shijun JIN Xigao GE Shouren Atsushi TAKAHARA Tisato KAJIYAMA |
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| Institution: | Institute of Chemistry; The Chinese Academy of Sciences; Beijing 100080; China Department of Materials Physics and Chemistry; Graduate School of Engineering; Kyushu University; Fukuoka 812; Japan |
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| Abstract: | Tapping mode atomic force microscope has been applied to observe single-chain PMMAparticles which were stored for six months at room temperature after sprayed from verydilute solutions in good solvents, good/poor mixed solvents, and a theta solvent. Monodis-perse PMMA standards of molecular weights ranging from 7.90×104 to 1.3×106 wereused to investigate the effect of molecular weight oh the size of the single-chain PMMA particles. These single-chain particles showed close to spherical shapes. The morphology of single-chain PMMA particles of a given molecular weight was found to be identical in spite of different solvents used for solution spraying.Molecular weight dependence of the particle dimension was also found.The diameters of single-chain PMMA particles after correction of tip-geometry effect were compared to the values estimated from molecular weight and density. |
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| Keywords: | Atomic force microscope Morphology Single-chain particle Polymethylmethacrylate |
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