Introduction
In this experiment, we will determine the effectiveness of various nonwoven medical gowns as barriers against UV radiation. We will also be determining if this gown acts as bacterial resistance or not. The success of this experiment will help us in making ultraviolet protective fabrics.
Aim
To determine the effectiveness various nonwoven medical gown as ultraviolet radiation.
Theory
1. Non-Woven medical fabrics are important in the medical, thermal insulation industry, and surgery.
2. These are used in bandages, surgical clothing, adhesive tapes, wound dressing, etc.
3. Nonwoven fabrics can be made naturally and synthetically.
4. They are used widely because of the low cost and give 100% performance.
Requirements
1. 17 non-woven medical gown fabrics
2. Spectronic 20+ spectrophotometer
3. Electron microscope
4. Notebook
5. Homemade frames
6. UV light
Procedure
Step 1: Take 17 non-woven medical gown fabrics.
Step 2: Using a Spectronic 20+ spectrophotometer, test the absorption and transmission of UV rays through the fabrics.
Step 3: Take a homemade frame and sandwich a sample of the non-woven medical gown into this frame.
Step 4: Use an empty frame as a controller.
Step 5: Place this sample inside a testing chamber and penetrate the UV light through it.
Step 6: To determine the characteristics of the sample, scan it through an electron microscope.
Step 7: Record your observations.
Observation
1. By scanning the sample through an electron microscope, we find that the non-woven fabrics are made up of threads.
2. The higher-ranked fabrics were composed of many threads to create a closer entanglement. For instance, 55/45 polyester of wood pulp, the best performer
3. The lower-ranked fibers were the ones that had large holes and loose weaves. For instance, light 100% polyester fabrics are the worst performers.
Result
1. We saw that the performance of thinner and lighter fabrics was lower than the thicker and heavier fabrics.
2. The area of air space helps the most in determining the better fabrics.
3. The presence of small holes in a piece of fabric means less transmission of UV radiation and higher performance.
4. The presence of large holes in nonwoven fabrics means the large transmission of UV radiation and lower performance.
Precaution
1. Take help from a lab assistant.
2. Record your observation cautiously.
3. Make sure fabrics are not torn.
Conclusion
In this experiment, we tested the performance of non-woven medical gowns when they came into contact with UV radiation.
VIVA Questions With Answers
Q.1 What was the aim of your experiment?
ANS. We aimed to determine the effectiveness of nonwoven medical gowns as barriers against UV radiation.
Q.2 Which kind of fabric does not allow ultraviolet radiation to pass through it?
ANS. The fabrics that have small holes and are thick and heavy do not allow UV radiation to pass through them.
Q.3 Which kind of fabric allowed the UV light to pass through it?
ANS. The fabrics that have large holes and are thin and light allow the UV light to pass through them.
Saquib Siddiqui is a Mechanical Engineer and a content creator. He has special interest in science experiments and teaches the same to school and college students. He is also a technical lead at RUDE LABS PVT. LTD.
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