ISSN:
1600-5767
Source:
Crystallography Journals Online : IUCR Backfile Archive 1948-2001
Topics:
Geosciences
,
Physics
Notes:
Aggregation of methylcellulose in aqueous dilute solution is studied by light and small angle neutron scattering. For temperature T〈293.15K, the free chains adopt a swollen conformation. For T〉313.15K, a slow aggregation kinetics occurs. At qRg〈1, the association number is found to vary as Rg3. However at qRg〉1, the scattered intensity decreases as q−(1〈d≤1.3) depending on the temperature. At even higher q, one observes a local compaction as aggregation proceeds, as revealed by a more and more pronounced Porod's behaviour. Results are discussed in terms of non self-similar growing aggregates, having neither a rod-like nor a dense structure.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1107/S0021889899013278
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