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Pore size analysis from low field NMR spin-spin relaxation measurements of porous microspheres
Alternative TitleJ. Porous Mat.
Li, X. N.; Li, Y. Q.; Chen, C.; Zhao, D. W.; Wang, X. J.; Zhao, L.; Shi, H.; Ma, G. H.; Su, Z. G.
2015
Source PublicationJournal of Porous Materials
Issue1Pages:11-20
Abstract

The porous structure characteristics of twenty-one porous microspheres with agarose framework were investigated based on the low-field nuclear magnetic resonance (LF NMR) relaxation time (T (2)) distribution measurements. The feasibility of the technique was confirmed by direct relationship between T (2) and the mean pore size of the polymer networks (Rh) of agarose hydrogel which was established using the "Fiber-Cell" model. The expected pore radius distribution curve was obtained and the reliability was validated by comparing them with the results obtained by inverse size-exclusion chromatography. Thereafter, the technique was applied to characterize the pore size distribution (PSD) of soft microspheres and the pore size transformation of microspheres with or without grafted polymers in the process of protein adsorption. All of these results strongly support LF NMR as a promising, rapid and nondestructive technique for the determination of PSDs in many kinds of soft porous microspheres.

KeywordLf Nmr Transverse Relaxation Time T-2 Porous Microspheres Pore Size Distribution (Psd) Alginate Hydrogels Chromatography Water Distributions Spectroscopy Networks Proteins Microscopy Mechanism Transport
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Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/11776
Collection研究所(批量导入)
Recommended Citation
GB/T 7714
Li, X. N.,Li, Y. Q.,Chen, C.,et al. Pore size analysis from low field NMR spin-spin relaxation measurements of porous microspheres[J]. Journal of Porous Materials,2015(1):11-20.
APA Li, X. N..,Li, Y. Q..,Chen, C..,Zhao, D. W..,Wang, X. J..,...&Su, Z. G..(2015).Pore size analysis from low field NMR spin-spin relaxation measurements of porous microspheres.Journal of Porous Materials(1),11-20.
MLA Li, X. N.,et al."Pore size analysis from low field NMR spin-spin relaxation measurements of porous microspheres".Journal of Porous Materials .1(2015):11-20.
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