UNIVERSITY KUALA LUMPUR
MALAYSIAN INSTITUTE OF CHEMICAL AND
BIOENGINEERING TECHNOLOGY
LATEX SCIENCE AND
TECHNOLOGY LAB REPORT
EXPERIMENT 2:
TO TEST THE DRC AND TSC OF
LATEX CONCENTRATE
PREPARED BY:
MOHD AIZUDDIN SHAHMI B. A’ZIM
55100204156
SECTION 2A
RESULT AND DATA
TSC DATASHEET
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Mass of Petri dish and cover A = 98.7635 g
Mass of Petri dish and cover B = 98.4292 g
Mass of Petri dish and cover A + Mass for sample A =100.8035 g
Mass of Petri dish and cover B + Mass for sample B =102.4592 g
Before drying in oven:
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Mass for sample A, (MO)A = 2.04 g
Mass for sample B, (MO)B = 2.03 g
After drying in oven to a constant weight
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Mass of sample A (with Petri dish and cover) = 100.0827g
Mass of sample A (without Petri dish and cover), (M1)A= 1.3192 g
Mass of sample B (with Petri dish and cover) = 99.7117 g
Mass of sample B (without Petri dish and cover), (M1)B = 1.2825 g
Total solid content for latex sample A = (M1)A/(MO)A x 100%
= (1.3192/2.04)x100%
= 64.67%
Total solid content for latex sample B = (M1)B/(MO)B x100%
= (1.2825/2.03)x100%
= 63.18 %
DRC DATA SHEET
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Mass of sample A before drying , (MO)A= 10.1148 g
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Mass of sample A after drying, (M1)A = 5.9664 g
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Mass of sample B before drying, (MO)B = 10.0409 g
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Mass of sample B after drying, (Mi)B = 6.0028 g
Dry rubber content for latex sample A = (MI)A/(MO)A x 100%
= (5.9664/10.1148)x100%
=58.98%
Dry rubber content for latex sample B = (MI)B/(MO)B x 100%
= (6.0028/10.0409)x100%
=59.78%
DISCUSSION
From the result that I obtained from the experiment for the total solid content, it showed
that the duplicate determinations are differ 3.46 units. That is 3.26 units bigger than the
limitation units. Meanwhile, for the dry rubber content experiment, the duplicate
determinations are smaller than the limitation units that are 0.06 % and the weight of the
both sample is larger than 5g.
The inaccuracy for the experiment total solid content is cause by several errors or
mistaken. First, the latex isn’t evenly covering the bottom surface of the Petri dish. The
latex is not also totally dry when taken out from the oven and instead there are bubbles
bellow the surface of the dry latex. For the dry rubber content experiment, the layer of the
rubber sheet is approximately or almost 2mm because the differences between the two
reading is smaller than 0.1%, but the rubber sheets still contain some small whiteness
spot on the surface.
To solve this problems, for the total solid content experiment, we find that the latex is
suppose to cover the bottom surface evenly in order to make the latex dry uniformly or
totally dry and also to prevent bubbles from appear bellow the surface of the latex when it
dry. For the dry rubber content experiment, the layer of the rubber sheet is suppose to be
2mm and bellow, to minimize the water content in the rubber.
CONCLUSION
From the experiment, I know that the experiment that I carried out is succeed, Why?
because I had follow all the requirements given from the lab report. For example I had
succeed made the rubber sheet’s layer less thicker than 2mm,the latex is currently
covering the whole bottom surface of the Petri dish.
From this experiment I know on how to perform the TSC and DRC tests for latex and to
understand the importance of the test that is the way to conduct the experiment.
TUTORIALS
How does the TSC differ from the DRC?
The TSC differ from the DRC is the TSC is a measure of the total rubber and non rubber
solids in the latex, while the DRC is a measure of the non-rubber solid content or
percentages of the dry rubber content in the latex.