The DOI matches its Crossref record.
Ultrapermeable, Reverse-Selective Nanocomposite Membranes
Abstract
Polymer nanocomposites continue to receive tremendous attention for application in areas such as microelectronics, organic batteries, optics, and catalysis. We have discovered that physical dispersion of nonporous, nanoscale, fumed silica particles in glassy amorphous poly(4-methyl-2-pentyne) simultaneously and surprisingly enhances both membrane permeability and selectivity for large organic molecules over small permanent gases. These highly unusual property enhancements, in contrast to results obtained in conventional filled polymer systems, reflect fumed silica–induced disruption of polymer chain packing and an accompanying subtle increase in the size of free volume elements through which molecular transport occurs, as discerned by positron annihilation lifetime spectroscopy. Such nanoscale hybridization represents an innovative means to tune the separation properties of glassy polymeric media through systematic manipulation of molecular packing.
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
Cellulose nanomaterials review: structure, properties and nanocomposites
Moon, R. J., Martini, A., Nairn, J., Simonsen, J., & Youngblood, J. (2011) · Chemical Society Reviews · doi:10.1039/c0cs00108b · Cited by 6,756
Rufford, T. E., Smart, S., Watson, G. C. Y., Graham, B. F., Boxall, J., Diniz da Costa, J. C., & May, E. F. (2012) · Journal of Petroleum Science and Engineering · doi:10.1016/j.petrol.2012.06.016 · Cited by 676
Transport and structural characteristics of crosslinked poly(ethylene oxide) rubbers
LIN, H., WAGNER, E., SWINNEA, J., FREEMAN, B., PAS, S., HILL, A., KALAKKUNNATH, S., & KALIKA, D. (2006) · Journal of Membrane Science · doi:10.1016/j.memsci.2005.09.040 · Cited by 327
Self-citationSynthesis of hierarchically porous silica film with controllable surface wettability
Tao, S., & Wang, Y. (2014) · International Nano Letters · doi:10.1007/s40089-014-0102-y · Cited by 23
Metadata
- Authors
- Merkel, T. C., Freeman, B. D., Spontak, R. J., He, Z., Pinnau, I., Meakin, P., & Hill, A. J.
- Venue
- Science
- Published
- 2002-04-19
- Volume
- 296
- Issue
- 5567
- Pages
- 519-522
- ISSN
- 0036-8075 (ISSN-L)
- 1095-9203
- OpenAlex
- W1978983577
- Cited by
- 1,039
- References
- 0
- FWCI
- 62.02
- 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: Ultrapermeable, Reverse-Selective Nanocomposite Membranes. https://app.cochat.ai/papers/10.1126/science.1069580
- The paper
- Merkel, T. C., Freeman, B. D., Spontak, R. J., He, Z., Pinnau, I., Meakin, P., & Hill, A. J. (2002). Ultrapermeable, Reverse-Selective Nanocomposite Membranes. Science. https://doi.org/10.1126/science.1069580
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.
