Journal
ACS MACRO LETTERS
Volume 11, Issue 6, Pages 818-824Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsmacrolett.1c00778
Keywords
-
Categories
Funding
- U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Material Sciences and Engineering [DE-SC0020847, DE-SC0018135, DE-SC0018111]
- U.S. Department of Energy (DOE) [DE-SC0020847] Funding Source: U.S. Department of Energy (DOE)
Ask authors/readers for more resources
In this study, the migration of silica nanoparticles from a poly(ethylene oxide) melt into the interlamellar region was tracked using in situ atomic force microscopy. The results confirmed that under slow crystallization conditions, the nanoparticles are rejected by the growing crystal as defects and can be tracked as they migrate into the amorphous zones. The study also extended the atomic force microscopy technique to estimate lamellar growth rates, which correlated with spherulite growth rates determined by polarized light optical microscopy.
We present in situ tracking of silica nanoparticle (NP) migration from a poly(ethylene oxide) (PEO) melt into interlamellar region using in situ atomic force microscopy (AFM). Our results confirm the previous hypothesis that NPs migrate into the interlamellar regions at crystallization growth rates smaller than a critical value under isothermal conditions. Under these slow crystallization conditions, bare silica NPs are rejected as defects by the growing crystal of PEO, and the in situ imaging on the large (50 nm) NPs helps track the migration into the amorphous zones. We extend this AFM technique to estimate lamellar growth rates that correlate with spherulite growth rates determined by polarized light optical microscopy (PLOM) but at smaller undercoolings than are typical for PLOM.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available