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Novel Polymer Clusters with a Uniform Chain Density
Author(s) -
Wu Chi,
Niu Aizhen,
Zhao Yue,
Li Chengming,
Yang Yuliang
Publication year - 2001
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/1521-3927(20010601)22:9<704::aid-marc704>3.0.co;2-3
Subject(s) - molar mass , radius of gyration , polystyrene , polymer , branching (polymer chemistry) , materials science , polymer chemistry , chain (unit) , molar mass distribution , thermal decomposition , chemistry , composite material , organic chemistry , physics , astronomy
The thermal decomposition of polystyrene clusters prepared by using 4‐methacryloyloxy‐2,2,6,6‐tetramethylpiperidine‐ N ‐oxyl as a branching agent was studied. The weight‐average molar mass ( M̄ w ) and the radius of gyration ( R g ) of the resultant clusters can be scaled as M̄ w ∝ R g 3.0 ± 0.1 , revealing that these clusters have a uniform chain density. Moreover, the dynamic properties of such clusters converge unexpectedly faster than the static properties as the molar mass decreases.