6 - LABORATORY WORK
MICROSCOPIC ANALYSIS OF THE CONTENT OF PAPER.
The purpose of the work: to get acquainted with the
methods of evaluating the
whiteness and transparency of paper using a spectrocolorimeter or densitometer, to
study the optical scheme of the densitometer.
Tools and equipment:
Computer system model YG002C
The theoretical part is the order of work
Microscopic studies. Microscopes are used in the digital G002C model
computer system with 40x and 100x magnification to evaluate the color quality of
copies printed on polymer surfaces. The research of
the morphology of the paper
composition is carried out by analyzing microphotographs prepared using an optical
electron microscope of the G 002C computer system.
Ish bajarish tartibi
By placing the
paper sample on a white base, the structure of the fibers in the paper
and the presence of bonds between the fibers are studied from five parallel dimensions.
1.
2.
Images taken from microscopes on a
digital G002C computer system with 40x
and 100x magnification
3.
Job report
1. Effect of the location structure of the fibers in the paper and the level of fiber
bonds on the quality of the product.
2. Comparing the results
obtained for different papers, conclusions are drawn
about the structure of the fibers in the paper and the bonds between the fibers.
Control questions:
1. What indicators can be used to evaluate the structure of the fibers in the paper
and the properties of the fiber bonds?
2. How is the structure of the fibers in the paper
and the bonds between the
fibers evaluated?
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