Lab 10 - Santiago Rubio April 30, 2010 Exercise 10:...

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Santiago Rubio April 30, 2010 Exercise 10: Identification of an Unknown Fiber Blend 1. Abstract Fiber identification test methods learned throughout the semester were used to determine the identity of a blended yarn consisting of two unknown fibers. The test methods consisted of burn tests, stain tests, and microscope tests. The microscope tests were longitudinal views, cross- sectional views, and polarizer tests. These tests were done on the yarn blend to indentify the two fibers. 2. Introduction This exercise was a laboratory practicum test. In this experiment, different methods learned in the laboratory to identify fibers were applied on an unknown blended yarn. It is easy to indentify natural fibers under the microscope because they all have a unique structure. Synthetic fibers are more difficult to distinguish, so destructive methods such as burn tests and stain tests are used to tell them apart. For the unknown fiber blend, tests under the microscope were conducted first to distinguish the fibers. Then, destructive methods were applied to confirm the possible identity of the fibers. Conclusions on the fibers were reached at the end of the experiment. 3. Objective The first objective of this experiment was to apply the methods of fiber identification to an unknown blend yarn in order to determine the two fibers. Such methods include burn tests, stain tests, and microscope tests. The second objective was to determine the percent blend of each component fiber. 4. Materials Microscope Glass Slides Cover Slides Razor Cutting Block Thread Needle Cork Water Unknown Yarn T.I.S. Stain #1 T.I.S. Stain #3A Candle Matches
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Tweezers Safety Glasses 5. Procedure 1. Bring all materials to the laboratory station. 2.
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This note was uploaded on 11/06/2010 for the course TX TMS 211 taught by Professor Hamouda during the Spring '10 term at N.C. State.

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Lab 10 - Santiago Rubio April 30, 2010 Exercise 10:...

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