期刊
JOURNAL OF POLYMER SCIENCE PART B-POLYMER PHYSICS
卷 48, 期 18, 页码 1955-1959出版社
WILEY
DOI: 10.1002/polb.22073
关键词
crystallization; surfaces; spherulites; nanolayers; layer growth; lamellar
资金
- National Science Foundation Center for Sensor Materials at Michigan State University
- Department of Energy Office of Basic Energy Sciences
Isothermal crystallization rates of semicrystalline poly(methoxypoly(ethylene glycol) methacrylate) brushes on gold-coated substrates were measured by polarized optical microscopy. Growth rates for crystal radii, which were essentially constant for each film, initially increased with film thickness and then leveled off for film thicknesses >300 nm. Avrami-Evans theory suggests that the spherulites exhibit one-dimensional growth with heterogeneous nucleation. Compared with physisorbed analogs, polymer brushes crystallized slower due to the restriction of chain mobility. (C) 2010 Wiley Periodicals, Inc. J Polym Sci Part B: Polym Phys 48: 1955-1959, 2010
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