Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 21 - Shawl Weaving Artisan - TP
P. 21

    Textile & Handloom                                                                Exercise 1.1.07

                Shawl Weaving Artisan - Textile Fibers and Safety

                Identification of fibers by burning and microscopic test

                Objectives : At the end of this exercise you shall be able to
                •  identify fibers with burning test
                •  identify fibers with microscopic test.

                  Requirements

                   Tools/Equipment’s/Instruments                      •   Eraser                            - 1 No.
                   •  Microscope (Medium)              - 1 No         •  Wool fiber                         - 5 gms
                                                                      •  Cotton Fiber                       - 5 gms
                   Materials                                          •  Silk fiber                         - 5 gms
                   •  Notebook                         - 1 No.        •  Nylon fiber                        - 5 gms
                   •  Pencil                           - 1 No.        •  Acrylic fiber                      - 5 gms

                PROCEDURE

                TASK 1: Identify different types of fibers with burning test

                                                   Refer Exercise No. 1.1.01 in Task 2

                TASK 2: Identify different types of fibers with microscopic test
                1  Take one small sample from the given samples.      9  Adjust the light source and focus.
                2  Give identification  code  nos like  1,2,3,…6, to the   10 Look for the overall structure of the fibres, such as
                   fiber samples.                                       their shape, arrangement, and uniformity.
                3  Clean the  sample to  remove dust  or impurities, if   11 Switch to a higher  magnification  (e.g., 40x) for a
                   necessary.                                           closer look at finer details.
                4  Place the fibre sample on a clean glass microscope   12 Observe the characteristic of given fibre.
                   slide.
                                                                      13 Note the fibre’s Surface structure (smoothness  or
                5  Than spread the fibre so individual  strands are     roughness), Diameter and uniformity, presence  of
                   visible.                                             any impurities in your notebook.
                6  Add a drop of water or mounting medium to enhance   14 Take photos or sketch what you see under the
                   visibility and prevent movement.(if needed).         microscope.
                7  Gently place a coverslip over the fibre to  flatten it   15 Remove the sample, clean the slide and coverslip.
                   and protect it during observation.
                                                                      16 Repeat the exercise with other fiber samples from
                8  Turn on the microscope and select the appropriate    step1 to 14.
                   objective lens (start with a low magnification, e.g., 4x   17 Note all the characteristics you observe during the
                   or 10x).                                             microscopic test in the following table 1.

                                                                Table 1

                                             Surface structure
                  S No.    Sample code                            Diameter and uniformity   Presence of any  impurity
                                             (smooth or rough)
                    1
                    2

                    3
                    4

                    5

                                                                                                                     9

| 16 17 18 19 20 21 22 23 24 25 26 |