期刊
ACS MACRO LETTERS
卷 5, 期 4, 页码 523-527出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.6b00164
关键词
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资金
- National Science Foundation [DMR-1408323]
- Scientific User Facilities Division, Office of Basic Energy Sciences, U.S. Department of Energy
- Northwestern University
- E.I. DuPont de Nemours Co.
- Dow Chemical Company
- DOE Office of Science [DE-AC02-06CH11357]
- Division Of Materials Research
- Direct For Mathematical & Physical Scien [1408323] Funding Source: National Science Foundation
Chain behavior has been determined in polymer nanocomposites (PNCs) comprised of well-dispersed 12 nm diameter silica nanoparticles (NPs) in poly(methyl methacrylate) (PMMA) matrices by Small-Angle Neutron Scattering (SANS) measurements under the Zero Average Contrast (ZAC) condition. In particular, we directly characterize the bound polymer layer surrounding the NPs, revealing the bound layer profile. The SANS spectra in the high-q region also show no significant change in the bulk polymer radius of gyration on the addition of the NPs. We thus suggest that the bulk polymer conformation in PNCs should generally be determined using the high q region of SANS data.
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