Transmission Rate and Ultraviolet Protection Factor of five Different Fibers against Ultraviolet Radiation

Document Type : Original Article

Authors

1 Department of Medical Physics, Faculty of Medicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Ahvaz, Iran.

2 Department of Radiology Technology, Faculty of Behbahan Paramedicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran.

3 Department of Instructor of Radiology Technology, Faculty of Paramedicine, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Ahvaz, Iran.

Abstract

Background and Objectives: Iran is located between the tropic of Capricorn and tropic of cancer, which is exposed to the high amount of ultraviolet radiation. The study was aimed to assess transmission rate and ultraviolet protection factor of five artificial and natural, synthetic fibers at different distances from sources and with two of different sources of radiation.
Subjects and Methods:In this descriptive and analytical study five different samples of fibers were used. All fibers had equal thicknesses, surface of contact areas and strain rates. Both natural of sunlight and artificial (point and wide) sources of ultraviolet lamps were used. The fibers are placed directly in front of each source at distances of 1, 3, and 9cm. In each test, the measurement was repeated three times and the average of measurements was recorded.
Results: The transmission of cotton fibers and combination of wool and polyester exposed to ultraviolet radiation was highest and lowest, respectively. While the transmission rate decreased, the quantity of ultraviolet protection factor increased. The transmission rate for woolen fibers was lower than 0.05 w /m2. Therefore, the quantity of ultraviolet protection factor was higher.  
Conclusion: In contrast to other fibers, fibers that have wool in their structure have higher quantities of ultraviolet protection factor. So, because of the low transmission rate and high absorption rate, woolen fibers can be considered as the best fiber in the classification of materials for protection against the ultraviolet radiation.

Keywords

References

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Jundishapur Scientific Medical Journal
Volume 14, Issue 1 - Serial Number 94
May and June 2015
Pages 41-51

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History

  • Receive Date: 16 November 2014
  • Revise Date: 26 January 2015
  • Accept Date: 07 February 2018

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