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PubMed1985

[Cleansing of the skin of metabolic products and microorganisms by the wearing of children's outer clothing made of polyacrylonitrile fibers].

The rate of absorption of metabolite products and accumulation of microorganisms on the skin from knitted wear, with different combination of wool /W/ and polyacrylonitrile fibers /PAN/ and of 100% PAN regular production and modified /11 types of products/, is examined in laboratory and natural conditions, as well as bacteriostatic effect related to some important microorganisms. A clearly expressed reverse dependence is established between the absorbing properties of the knitted wear and the metabolite products on the skin and the progressive increase of synthetic PAN fibres in the content. Especially evident is the difference in the quantity of products between the knitted wear of 100% PAN /regular production and modified/ and 100% wool. Considerable are also the differences in the products with the participation of PAN above 50%. This presuppose bad cleaning ability of these articles and accumulation of residual products. Two vague tendencies--bacteriostatic effect and bad cleaning of skin from the knitted wear with large per cent of PAN fibres /70 and 100%/, which are to be investigated additionally.

Absorption↗
PubMed1985

The effect of leakage on the insulation provided by immersion-protection clothing.

The effect of controlled, incremental water leakage on the thermal insulation provided by three immersion-protection assemblies has been measured using a thermal manikin. The results show an average loss of 30% of the initial insulation for a leak of 500 g, 40% for a leak of 1000 g, and nearly 60% for a leak of 3000 g. The assemblies differed only in the thermal insulation layer which consisted of: A. A single thickness of wool (initial immersed insulation 0.63 clo) B. A double thickness of wool (initial immersed insulation 0.79 clo) and C. A layer of polypropylene batting between nylon covers (initial immersed insulation 0.76 clo). Differences between the assemblies in loss of insulation with leakage were small and no evidence was found to support claims that the insulating properties of polypropylene are more resistant to wetting than those of wool. It is considered that the substantial loss of insulation even with small leaks makes it essential that tests of the water-excluding performance of immersion suits are undertaken in realistic conditions rather than in calm water.

Body Temperature Regulation↗