ICCAS OpenIR
Light-scattering study of the aggregation of syndiotactic poly(methyl methacrylate) in solution
Chen, WN; Zhao, Y; Jiang, Y; Yan, DD; Han, CC
2004-11-12
Source PublicationCHEMPHYSCHEM
ISSN1439-4235
Volume5Issue:11Pages:1745-1749
AbstractSyndiotactic poly(methyl methacrylate) (s-PMMA) may undergo aggregation in n-butyl chloride (n-BuCl) at temperatures below the 0 temperature. The aggregation behavior of the s-PMMA with weight-average molecular weight M(w) =6.06 x 10(5) g mol(-1) was studied by a combination of static and dynamic laser-light-scattering experiments. A solution of concentration 1.12 x 10(-4) gmL(-1) was quenched from 50degreesC (above the theta temperature in n-BuCl, 35degreesC) to 12degreesC, and the aggregation process was measured over 60 h. The time dependence of M(w) the root-mean-square z-average radius of gyration , and the average hydrodynamic radius were used to monitor the growth of the aggregates, with the result M(w)similar to(df) (where d(f)= 1.98 +/- 0.02), which implies the formation of a fractal aggregate. The observed fractal dimension, d(f) is close to that expected for a reaction-limited cluster aggregation for which d(f) =2.1. In addition, atomic force microscopy was used to image the aggregates.
KeywordAggregation Fractals Kinetics Laser-light Scattering Polymers
DOI10.1002/cphc.200400175
Indexed BySCI
Language英语
WOS IDWOS:000225246800012
PublisherWILEY-BLACKWELL
Citation statistics
Cited Times:6[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/81826
Collection中国科学院化学研究所
Corresponding AuthorYan, DD
Affiliation1.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Mat, State Key Lab Polymer Phys & Chem, Beijing 100080, Peoples R China
2.Chinese Acad Sci, Grad Sch, Beijing 100864, Peoples R China
Recommended Citation
GB/T 7714
Chen, WN,Zhao, Y,Jiang, Y,et al. Light-scattering study of the aggregation of syndiotactic poly(methyl methacrylate) in solution[J]. CHEMPHYSCHEM,2004,5(11):1745-1749.
APA Chen, WN,Zhao, Y,Jiang, Y,Yan, DD,&Han, CC.(2004).Light-scattering study of the aggregation of syndiotactic poly(methyl methacrylate) in solution.CHEMPHYSCHEM,5(11),1745-1749.
MLA Chen, WN,et al."Light-scattering study of the aggregation of syndiotactic poly(methyl methacrylate) in solution".CHEMPHYSCHEM 5.11(2004):1745-1749.
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