Quality control of solar protection films via design of experiments
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2019
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INTERNATIONAL CONFERENCE ON DOSIMETRY AND ITS APPLICATIONS, 3rd
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Introduction
Solar radiation reaching the earth surface is broadly divided into infrared, visible and
ultraviolet radiation (UVR). Individual dosimetry and monitoring of the sun rays in humans and
environments is of interest since in homes, shops and cars the effects of UVR radiation can
bring irreparable damage to the skin and eyes. The effi cacy of solar protective fi lms has been
recognized as an important public health product. The objective of this work was the quality
control of solar fi lms using the UV-Vis spectroscopy technique via 2k Experimental Factor.
Methods
Four types of solar protective fi lms were tested: G05, G20, G35 and WB (Windom Blue), which
follow the blocking of UVR rays by 95%, 80%, 65% and 0% (76% transparent). The samples
had dimensions of 1.0 x 3.0 cm2 and the readings were taken on a GENESYS™ 10S UV-Vis
Spectrophotometer with an optical step of 1 nm from 190 nm to 400 nm. The absorbances were
used in a 2k Experimental Factor, in which the four fi lms were read individually and also with
overlap (two fi lms together). It was possible to obtain results of all the interactions among the
fi lms, with or without overlap.
Results
The results about the absorption of the sunscreen fi lms were modeled from the 2k Experimental.
This factor indicates that the best regions of the spectrum are blocked and/or where they
produce a better quality control of these materials. The region studied in this work was where
the ultraviolet radiation dosimetry can be of interest. The proposed spectrophotometric method
is rapid, simple and cost effective for the evaluation on quality control of protection fi lms.
Conclusions
The results provide information on ultraviolet radiation and they can be useful for the medical
physics community. The proposed methodology may be useful as a rapid quality control tool. It
can be used during the production process, in the analysis of the fi nal product, and can offer
important information for the scientifi c community.
Como referenciar
NASCIMENTO, ERIBERTO O.; BECATTI, MATHEUS J.P.; ANTONIO, PATRICIA L.; VIEIRA, SILVIO L.; OLIVEIRA, LUCAS N. de; CALDAS, LINDA V.E. Quality control of solar protection films via design of experiments. In: INTERNATIONAL CONFERENCE ON DOSIMETRY AND ITS APPLICATIONS, 3rd, May 27-31, 2019, Lisboa, Portugal. Abstract... Lisboa, Portugal: C2TN, Instituto Superior Técnico, Universidade de Lisboa, 2019. Disponível em: http://repositorio.ipen.br/handle/123456789/31010. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.