Thermogravimetric analysis
Thermogravimetric analysis or TGa is a thermoanalytical technique
that measures the weight changes of the sample at a given time and
temperature.. The equipment provides quantitative and qualitative
information about physical changes whether weight loss or gain in
the sample in response to the current temperature heating rate in the
atmosphere, whether it is inert or oxygen rich.. A typical graph that is
outputted from a TGa test of a polymeric material is plotted with
temperature on the horizontal axis.. Some analysts prefer to plot TGa
results with respect to time the percentage of the original weight
remaining of the sample is plotted on the vertical axis. the weight
percent curve is primarily used to determine the amount of weight
changes for each decomposition step in the plastic.. The TGa results
are highly dependent on the heating rate. The atmosphere in the
furnace and the maximum temperature achieved during testing.
variation in these three things could change the data so that
experiments with different parameters can not be directly compared.
when performing calculations on the graph. A good place to start
with interpretation is the derivative of the weight percent curve. The
derivative curve will clearly show you how many decomposition
steps there are in your sample..
A quantification of constituents can be used for reverse engineering
of a plastic material.. quantification is beneficial for comparison
between parts or lots of the same material Say a series of fiber
reinforced parts are experiencing failure in the field. A failed part and
reference part can both be subjected to TGa analysis and their graphs
can be compared. another use of TGa is assessment of the thermal
stability of polymers. any parameter that changes. The reaction rate
will affect the general shape and temperatures at which those
reactions will occur.. parameters include heating rate and maximum
temperature achieved the purge gas or atmosphere of the furnace the
sample mass shape form and morphology as well as the pan material
shape and size. of our new content. If you have any specific problem,
Thermogravimetric analysis or TGa is a thermoanalytical technique
that measures the weight changes of the sample at a given time and
temperature.. The equipment provides quantitative and qualitative
information about physical changes whether weight loss or gain in
the sample in response to the current temperature heating rate in the
atmosphere, whether it is inert or oxygen rich.. A typical graph that is
outputted from a TGa test of a polymeric material is plotted with
temperature on the horizontal axis.. Some analysts prefer to plot TGa
results with respect to time the percentage of the original weight
remaining of the sample is plotted on the vertical axis. the weight
percent curve is primarily used to determine the amount of weight
changes for each decomposition step in the plastic.. The TGa results
are highly dependent on the heating rate. The atmosphere in the
furnace and the maximum temperature achieved during testing.
variation in these three things could change the data so that
experiments with different parameters can not be directly compared.
when performing calculations on the graph. A good place to start
with interpretation is the derivative of the weight percent curve. The
derivative curve will clearly show you how many decomposition
steps there are in your sample..
A quantification of constituents can be used for reverse engineering
of a plastic material.. quantification is beneficial for comparison
between parts or lots of the same material Say a series of fiber
reinforced parts are experiencing failure in the field. A failed part and
reference part can both be subjected to TGa analysis and their graphs
can be compared. another use of TGa is assessment of the thermal
stability of polymers. any parameter that changes. The reaction rate
will affect the general shape and temperatures at which those
reactions will occur.. parameters include heating rate and maximum
temperature achieved the purge gas or atmosphere of the furnace the
sample mass shape form and morphology as well as the pan material
shape and size. of our new content. If you have any specific problem,
