A control stress rheometer, model AR-G2 from TA-Instruments
(Crawley, England) with a Peltier heating system, was employed.
The batters were maintained at 25 C for 60 min after preparation
as equilibration time before the rheological test. A 40 mm diameter
plateeplate sensor geometry with a serrated surface and a 1 mm
gap was employed. An equilibration time of 5 min was used in the
measurement position.