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Branched Crystalline Patterns Formed Around Poly(ethylene oxide) Dots in Humidity
Author(s) -
Wang Mingtai,
Braun HansGeorg,
Meyer Evelyn
Publication year - 2002
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(20021001)23:14<853::aid-marc853>3.0.co;2-h
Subject(s) - branching (polymer chemistry) , ethylene oxide , materials science , crystallization , humidity , diffusion , oxide , fractal , polymer , poly ethylene , diffusion limited aggregation , ethylene , chemical engineering , crystal (programming language) , polymer chemistry , chemical physics , fractal dimension , composite material , chemistry , copolymer , thermodynamics , organic chemistry , mathematics , mathematical analysis , computer science , engineering , metallurgy , programming language , catalysis , physics
Branched patterns reminiscent of diffusion‐limited aggregation form around poly(ethylene oxide) dots on Au surfaces in humidity by crystallization of polymer chains in water‐assisted diffusion, involving fractal‐like structure and dense branching‐like morphology (DBM). Higher humidity leads to a slower growth of crystal lamellae. Crystal growth promotes outward diffusion. Fractal‐like lamellae are viewed flat‐on. Due to the reduction of chain availability in the diffusion field, the fractal‐like structure turns into DBM.