The influence of poly(acrylic acid) molar mass and concentration on the properties of polyalkenoate cements Part III Fracture toughness and toughness
Source abstract
Abstract
The influence of poly(acrylic acid), PAA molar mass and concentration on fracture toughness and toughness of glass polyalkenoate cements was investigated. Fracture toughness and toughness increased with both the molar mass of the PAA and its concentration. The fracture toughness and toughness increased dramatically with concentration for the highest molar mass PAA studied. However the increase in fracture toughness and toughness with PAA concentration was small for the lowest molar mass PAA. The influence of molar mass was greatest at the highest PAA concentration studied and least for the lowest PAA concentration. The toughness results were analysed with a reptation chain pull-out model. The greater dependance of toughness on PAA concentration for high molar mass cements can be explained by the critical molar mass for chain entanglements to form (M e) being concentration dependant and M e decreasing with increasing PAA concentration.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Polymer Nanocomposites and Properties · Epoxy Resin Curing Processes · Drilling and Well Engineering
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (20)
Show source-provided references
1. B. Fennel and R. G. Hill, Part I, this issue.
2. E. Rabinowich, “Friction and Wear of Materials” Wiley, New York, 1965.
3. A. D. Wilson, R.G. Hill, C. P. Warrens and B. G. Lewis, J. Dent. Res. 68 (1989) 89.10.1177/00220345890680021401 ↗
4. C. H. Lloyd and L. Mitchell, J. Oral Rehab. 11 (1984) 257.10.1111/j.1365-2842.1984.tb00575.x ↗
5. M. Goldman, J. Biomed. Mater. Res. 19 (1985) 771.10.1002/jbm.820190705 ↗
6. C. A. Mitchell, W. H. Douglas and Y.-S. Cheng, Dent. Mater. 15 (1999) 7.10.1016/S0109-5641(99)90024-6 ↗
7. B. Fennell and R. Hill, ibid. 14 (1998) 358.10.1016/S0109-5641(99)00006-8 ↗
8. R. G. Hill, C. P. Warrens and A. D. Wilson, J. Mater. Sci. 24 (1989) 363.10.1007/BF00660982 ↗
9. R. G. Hill, ibid. 28 (1993) 3851.10.1007/BF00353190 ↗
10. S. Griffin and R. Hill, ibid. 33 (1998) 5383.10.1023/A:1004498217028 ↗
11. E. De Barra and R. Hill, ibid. 33 (1998) 5487.10.1023/A:1004479108367 ↗
12. P. Prentice, ibid. 20 (1985) 1445.10.1007/BF01026342 ↗
13. Idem, Polymer. 24 (1983) 344.10.1016/0032-3861(83)90275-6 ↗
14. A. Fujishima and J. L. Ferracene, Dent. Mater. 12 (1996) 38.10.1016/S0109-5641(96)80062-5 ↗
15. P. S. Leevers and J. G. Williams, J. Mater. Sci. 20 (1985) 77.10.1007/BF00555901 ↗
16. J. A. Kies and B. J. Clarke, Fracture, edited by P. L. Pratt (Chapman and Hall, London 1969), p. 483.
17. B. Fennell and R. G. Hill.
18. R. J. Martin, J. F. Johnson and A. R. Cooper, J. Macromol. Sci. Rev. Macromol. Chem. C8.
19. D. W. Krevelen and P. J. Hoftyzer, “Properties of Polymers-Their Estimation and Correlation with Chemical Structure,” 2nd ed. (Elsevier Scientific, 1976).
20. E. A. Wasson and J. W. Nicholson, J. Dent. Res. 72 (1983) 481.10.1177/00220345930720020201 ↗