The DOI matches its Crossref record; 6 of the 6 references it cites were found in a registry or an index.
Molecular Parameters of Hyperbranched Polymers Made by Self-Condensing Vinyl Polymerization. 2. Degree of Branching
Abstract
Using a modified definition, the average degree of branching,, the fraction of branchpoints,, as well as the fractions of various structural units are calculated as a function of conversion of double bonds for hyperbranched polymers formed by self-condensing vinyl polymerization (SCVP) of monomers (or “inimers”) with the general structure AB*, where A is a vinyl group and B* is an initiating group. The results are compared to those for the polycondensation of AB 2 -type monomers. At full conversion, is somewhat smaller for SCVP ( ∞ ≈ 0.465) than for AB 2 systems ( ∞ = 0.5). There are two kinds of linear groups in SCVP whereas there is only one kind in AB 2 systems. Since there are two different active centers in SCVP, i.e., initiating B* and propagating A* centers, the effect of nonequal reactivities on is also discussed. At a reactivity ratio of the two kinds of active centers, r = k A /k B ≈ 2.59, a maximum value of ∞ = 0.5 is reached. For the limiting case r << 1, a linear polymer resembling a polycondensate will be formed whereas for r >> 1 a weakly branched vinyl polymer is expected. NMR experiments allow for the determination of reactivity ratio r .
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Cites
One-step synthesis of hyperbranched dendritic polyesters
Hawker, C. J., Lee, R., & Frechet, J. M. J. (1991) · Journal of the American Chemical Society · doi:10.1021/ja00012a030 · Cited by 1,122
Self-Condensing Vinyl Polymerization: An Approach to Dendritic Materials
Fréchet, J. M. J., Henmi, M., Gitsov, I., Aoshima, S., Leduc, M. R., & Grubbs, R. B. (1995) · Science · doi:10.1126/science.269.5227.1080 · Cited by 845
Flory, P. J. (1952) · Journal of the American Chemical Society · doi:10.1021/ja01131a008 · Cited by 798
Hawker, C. J., Frechet, J. M. J., Grubbs, R. B., & Dao, J. (1995) · Journal of the American Chemical Society · doi:10.1021/ja00148a027 · Cited by 543
Hyperbranched Aliphatic Polyesters
Malmstroem, E., Johansson, M., & Hult, A. (1995) · Macromolecules · doi:10.1021/ma00109a049 · Cited by 501
Wooley, K. L., Hawker, C. J., Lee, R., & Fréchet, J. M. J. (1994) · Polymer Journal · doi:10.1295/polymj.26.187 · Cited by 144
Cited by
Facile, versatile and cost effective route to branched vinyl polymers
O'Brien, N., McKee, A., Sherrington, D. C., Slark, A. T., & Titterton, A. (2000) · Polymer · doi:10.1016/s0032-3861(00)00016-1 · Cited by 262
Chan, C. Y. K., Lam, J. W. Y., Jim, C. K. W., Sung, H. H. Y., Williams, I. D., & Tang, B. Z. (2013) · Macromolecules · doi:10.1021/ma402066k · Cited by 44
New developments in hyperbranched polymers
Voit, B. (2000) · Journal of Polymer Science Part A: Polymer Chemistry · doi:10.1002/1099-0518(20000715)38:14<2505::aid-pola10>3.0.co;2-8
Metadata
- Authors
- Yan, D., Müller, A. H. E., & Matyjaszewski, K.
- Venue
- Macromolecules
- Publisher
- American Chemical Society (ACS)
- Published
- 1997-11-01
- Volume
- 30
- Issue
- 23
- Pages
- 7024-7033
- ISSN
- 0024-9297 (ISSN-L)
- 1520-5835
- OpenAlex
- W2019939608
- Cited by
- 301
- References
- 6
- FWCI
- 11.66
- Type
- journal article
- Language
- en
- Open access
- closed
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