The DOI matches its Crossref record; 21 of the 21 references it cites were found in a registry or an index.
Effects of end group polarity and molecular weight on the lower critical solution temperature of poly(N‐isopropylacrylamide)
Abstract
The lower critical solution temperatures (LCSTs) for mass fractionated samples of poly(N‐isopropylacrylamide) (PNIPAM) were studied to determine the effect of polymer molecular weight on the LCST using a high throughput temperature gradient apparatus. PNIPAM fractions prepared by a conventional radical polymerization using azoisobutyronitrile (AIBN) as the initiator had LCSTs that were largely invariant with molecular weight or dispersity. Only slight deviations were noted with lower molecular weight samples. An 18‐kDa sample had a 0.6 °C higher LCST. A 56‐kDa sample had a 0.2 °C higher LCST. PNIPAM derivatives prepared with a triphenylmethyl (trityl) functionalized azo initiator were also prepared and mass fractionated. These samples' LCSTs were identical to those of PNIPAM samples prepared using AIBN initiation when higher molecular weight samples were compared. The trityl‐containing PNIPAM fractions' LCSTs varied when the molecular weight decreased below 100 kDa. Acidolysis of the trityl end groups provided a third set of PNIPAM derivatives whose LCST differed only with samples with Mw values < 60 kDa. These results show there is no effect of molecular weight on LCST until the degree of polymerization is such that end group structure becomes significant. © 2006 Wiley Periodicals, Inc. J Polym Sci Part A: Polym Chem 44: 1492–1501, 2006
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
Cites
Solution Properties of Poly(N-isopropylacrylamide)
Heskins, M., & Guillet, J. E. (1968) · Journal of Macromolecular Science: Part A - Chemistry · doi:10.1080/10601326808051910 · Cited by 3,117
Specific Ion Effects on the Water Solubility of Macromolecules: PNIPAM and the Hofmeister Series
Zhang, Y., Furyk, S., Bergbreiter, D. E., & Cremer, P. S. (2005) · Journal of the American Chemical Society · doi:10.1021/ja0546424 · Cited by 1,414
Self-citationFujishige, S., Kubota, K., & Ando, I. (1989) · The Journal of Physical Chemistry · doi:10.1021/j100345a085 · Cited by 1,145
Microcalorimetric detection of lower critical solution temperatures in aqueous polymer solutions
Schild, H. G., & Tirrell, D. A. (1990) · The Journal of Physical Chemistry · doi:10.1021/j100373a088 · Cited by 954
Chong, ). Y. K., Krstina, J., Le, T. P. T., Moad, G., Postma, A., Rizzardo, E., & Thang, S. H. (2003) · Macromolecules · doi:10.1021/ma020882h · Cited by 793
Taylor, L. D., & Cerankowski, L. D. (1975) · Journal of Polymer Science: Polymer Chemistry Edition · doi:10.1002/pol.1975.170131113 · Cited by 597
Xia, Y., Yin, X., Burke, N. A. D., & Stöver, H. D. H. (2005) · Macromolecules · doi:10.1021/ma050261z · Cited by 503
Kikuchi, A., & Okano, T. (2002) · Progress in Polymer Science · doi:10.1016/s0079-6700(02)00013-8 · Cited by 413
Free Volume and Polymer Solubility. A Qualitative View
Patterson, D. (1969) · Macromolecules · doi:10.1021/ma60012a021 · Cited by 363
Chung, J. E., Yokoyama, M., Aoyagi, T., Sakurai, Y., & Okano, T. (1998) · Journal of Controlled Release · doi:10.1016/s0168-3659(97)00244-7 · Cited by 319
Cited by
Hydrogel nanoparticles in drug delivery
Hamidi, M., Azadi, A., & Rafiei, P. (2008) · Advanced Drug Delivery Reviews · doi:10.1016/j.addr.2008.08.002 · Cited by 2,067
Poly(N‐isopropylacrylamide) Phase Diagrams: Fifty Years of Research
Halperin, A., Kröger, M., & Winnik, F. M. (2015) · Angewandte Chemie International Edition · doi:10.1002/anie.201506663 · Cited by 1,083
Multi-stimuli responsive polymers – the all-in-one talents
Schattling, P., Jochum, F. D., & Theato, P. (2014) · Polymer Chemistry · doi:10.1039/c3py00880k · Cited by 542
Moradi Kashkooli, F., Soltani, M., & Souri, M. (2020) · Journal of Controlled Release · doi:10.1016/j.jconrel.2020.08.012 · Cited by 514
pH- and ion-sensitive polymers for drug delivery
Yoshida, T., Lai, T. C., Kwon, G. S., & Sako, K. (2013) · Expert Opinion on Drug Delivery · doi:10.1517/17425247.2013.821978 · Cited by 367
Metadata
- Authors
- Furyk, S., Zhang, Y., Ortiz‐Acosta, D., Cremer, P. S., & Bergbreiter, D. E.
- Venue
- Journal of Polymer Science Part A: Polymer Chemistry
- Publisher
- Wiley
- Published
- 2006-01-11
- Volume
- 44
- Issue
- 4
- Pages
- 1492-1501
- ISSN
- 0887-624X (ISSN-L)
- 1099-0518
- OpenAlex
- W2144142196
- Cited by
- 309
- References
- 21
- FWCI
- 8.38
- 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: Effects of end group polarity and molecular weight on the lower critical solution temperature of poly(N‐isopropylacrylamide). https://app.cochat.ai/papers/10.1002/pola.21256
- The paper
- Furyk, S., Zhang, Y., Ortiz‐Acosta, D., Cremer, P. S., & Bergbreiter, D. E. (2006). Effects of end group polarity and molecular weight on the lower critical solution temperature of poly(N‐isopropylacrylamide). Journal of Polymer Science Part A: Polymer Chemistry. https://doi.org/10.1002/pola.21256
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.
