MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES*

NI Ming; CHEN Liusheng; JIA Shijun; JIN Xigao; GE Shouren; Atsushi TAKAHARA; Tisato KAJIYAMA

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MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES*

Papers | Updated：2021-06-21

- MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES*
- Vol. 15, Issue 4, Pages: 368-372(1997)
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- Published：20 December 1997
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NI Ming, CHEN Liusheng, JIA Shijun, et al. MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES*[J]. 1997, 15(4): 368-372.
DOI：

NI Ming, CHEN Liusheng, JIA Shijun, et al. MORPHOLOGICAL OBSERVATION OF SINGLE-CHAIN POLY (METHYL METHACRYLATE) PARTICLES*[J]. 1997, 15(4): 368-372. DOI：

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 7.90×104 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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good/poor mixed solvents

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