The DOI matches its Crossref record.
Interface and surface effects on the glass-transition temperature in thin polymer films
Abstract
We have measured the thickness dependence of the glass-transition temperature (Tg) of thin films of poly(methyl methacrylate)(PMMA) by using spectroscopic ellipsometry to detect the discontinuity in thermal expansivity occurring at Tg. We studied films on two surfaces: the native oxide of silicon, and evaporated gold. The Tg of PMMA on a gold surface decreases with decreasing film thickness, in accordance with previous results for polystyrene on silicon. We suggest that at the air surface a liquid-like layer exists whose size diverges as Tg is approached from below. For films of PMMA on the native oxide of silicon, however, we find a slight increase in Tg with decreasing thickness. We speculate that hydrogen bonding at the interface restricts mobility and leads to an increase in Tg, outweighing the effect of the free surface.
Overview
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Characteristics and Significance of the Amorphous State in Pharmaceutical Systems
Hancock, B. C., & Zografi, G. (1997) · Journal of Pharmaceutical Sciences · doi:10.1021/js9601896 · Cited by 1,922
Polymer Nanocomposites—A Comparison between Carbon Nanotubes, Graphene, and Clay as Nanofillers
Bhattacharya, M. (2016) · Materials · doi:10.3390/ma9040262 · Cited by 747
Glass Transition of Stereoregular Poly(methyl methacrylate) at Interfaces
Grohens, Y., Brogly, M., Labbe, C., David, M.-O., & Schultz, J. (1998) · Langmuir · doi:10.1021/la971397w · Cited by 256
Leng, C. Z., & Losego, M. D. (2017) · Materials Horizons · doi:10.1039/c7mh00196g · Cited by 224
Zhong, G., Su, R., Zhang, L., Wang, K., Li, Z., Fong, H., & Zhu, L. (2012) · Polymer · doi:10.1016/j.polymer.2012.08.014 · Cited by 29
Metadata
- Authors
- Keddie, J. L., Jones, R. A. L., & Cory, R. A.
- Venue
- Faraday Discussions
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 1994
- Volume
- 98
- Pages
- 219
- ISSN
- 1359-6640 (ISSN-L)
- 1364-5498
- OpenAlex
- W2092055538
- Cited by
- 1,013
- References
- 0
- FWCI
- 7.39
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
Are you an author, or do you see a problem with this page? Request a review
How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Interface and surface effects on the glass-transition temperature in thin polymer films. https://app.cochat.ai/papers/10.1039/fd9949800219
- The paper
- Keddie, J. L., Jones, R. A. L., & Cory, R. A. (1994). Interface and surface effects on the glass-transition temperature in thin polymer films. Faraday Discussions. https://doi.org/10.1039/fd9949800219
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
