Abstract
| Language | English |
|---|---|
| Pages | 434-441 |
| Number of pages | 8 |
| Journal | Macromolecules |
| Volume | 19 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 1986 |
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Keywords
- semidilute polymer solution
- swollen polymer network
- small-angle neutron-scattering
- polystyrene gel
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Determination of correlation lengths in swollen polymer networks by small-angle neutron-scattering. / Davidson, N.S.; Richards, R.W.; Maconnachie, A.
In: Macromolecules, Vol. 19, No. 2, 02.1986, p. 434-441.Research output: Contribution to journal › Article
TY - JOUR
T1 - Determination of correlation lengths in swollen polymer networks by small-angle neutron-scattering
AU - Davidson, N.S.
AU - Richards, R.W.
AU - Maconnachie, A.
PY - 1986/2
Y1 - 1986/2
N2 - The analogy between semidilute polymer solutions and swollen polymer networks is reviewed and some implications of current theories are considered. Small-angle neutron scattering has been used to measure a characteristic correlation length in randomly cross-linked polystyrene gels at swelling equilibrium in cyclohexane over the range 308-333 K and in toluene at ambient temperature. The equilibrium polymer volume fraction ranged from ca. 0.01 to 0.3, depending on the cross-link density and the solvent used. These results, together with those from earlier quasi-elastic light scattering measurements, were compared with reported scaling laws for polymer solutions. Although similar behavior was noted, the presence of permanent cross-links restricts the region wherein strong excluded volume effects are evident.
AB - The analogy between semidilute polymer solutions and swollen polymer networks is reviewed and some implications of current theories are considered. Small-angle neutron scattering has been used to measure a characteristic correlation length in randomly cross-linked polystyrene gels at swelling equilibrium in cyclohexane over the range 308-333 K and in toluene at ambient temperature. The equilibrium polymer volume fraction ranged from ca. 0.01 to 0.3, depending on the cross-link density and the solvent used. These results, together with those from earlier quasi-elastic light scattering measurements, were compared with reported scaling laws for polymer solutions. Although similar behavior was noted, the presence of permanent cross-links restricts the region wherein strong excluded volume effects are evident.
KW - semidilute polymer solution
KW - swollen polymer network
KW - small-angle neutron-scattering
KW - polystyrene gel
U2 - 10.1021/ma00156a034
DO - 10.1021/ma00156a034
M3 - Article
VL - 19
SP - 434
EP - 441
JO - Macromolecules
T2 - Macromolecules
JF - Macromolecules
SN - 0024-9297
IS - 2
ER -