In the present study, a simple approach was used to investigate the effect of UV-exposure on two high density polyethylene materials (PE-HD), commonly used for storage tanks, on fuel sorption behavior and colonization by microorganisms. The aim was to investigate whether the sorption behavior of the fuels (diesel/biodiesel) and the colonization by microorganisms, frequently occurring in the fuel, is affected and may lead to undesirable or safety-relevant material changes. We showed that the UV-irradiation leads to significant changes of the sorption behavior due to chemi-crystallization and crosslinking. The fuel sorption is affected by the UV-induced formation of polar carbonyl and hydroxyl groups predominantly occurring at the surface. With respect to microbial colonization behavior for Bacillus subtilis and Pseudomonas aeruginosa, isolated from a contaminated diesel sample, differences of the initial adhesion could be shown depending on the initial type of polyethylene as well as on the degree of UV-induced degradation.

在本研究中，采用一种简单的方法来研究紫外线照射对通常用于储罐的两种高密度聚乙烯材料（PE-HD）的燃料吸附行为和微生物定殖的影响。目的是研究燃料（柴油/生物柴油）的吸附行为和燃料中频繁发生的微生物定植是否受到影响，并可能导致不期望的或与安全相关的材料变化。我们显示，由于化学结晶和交联，紫外线辐射导致吸附行为发生重大变化。燃料的吸收受紫外线诱导的极性羰基和羟基基团的形成的影响，这些极性基团主要发生在表面。关于枯草芽孢杆菌的微生物定殖行为从污染的柴油样品中分离出的铜绿假单胞菌和铜绿假单胞菌，可能会显示出初始粘合力的差异，这取决于聚乙烯的初始类型以及紫外线引起的降解程度。