SOLID-LIQUID ADHESION OF OXIDIZED POLYETHYLENE FILMS - EFFECT OF TEMPERATURE
SOLID-LIQUID ADHESION OF OXIDIZED POLYETHYLENE FILMS - EFFECT OF TEMPERATURE
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DOI：
10.1016/0021-9797(76)90311-8
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发表时间：
1976-01-01
影响因子：
9.9
通讯作者：
TERMINASSIANSARAGA, L
中科院分区：
文献类型：
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作者：
BASZKIN, A;NISHINO, M;TERMINASSIANSARAGA, L
温度对表面密度已知的氧化聚乙烯薄膜润湿性的影响表明，对于具有不同数量羟基的不同液体，在约 85°C 时，粘合自由能会降低。通过差热分析获得的热分析图显示熔化转变开始于约85°C。熔融转变开始时的温度与氧化聚乙烯薄膜润湿性的降低之间的密切一致可以解释为链流动性的增加导致最初位于固-空气界面的外部极性基团的重新分布。我们将观察到的现象表示为大分子链翻转的程度。讨论了与液体中存在的 OH 基团数量及其形成氢键的能力相关的结果。
The temperature effect on the wettability of oxidized polyethylene films with known surface densities shows a decrease in the free energy of adhesion at about 85°C for different liquids employed with varying numbers of OH groups. The thermograms obtained by differential thermal analysis show that the beginning of the melting transition is at about 85°C. The close agreement between the temperature at the beginning of the melting transition and the decrease of the wettability of oxidized polyethylene films is interpreted by the increase of the chain mobility leading to the redistribution of external polar groups initially located at the solid—air interface. We express the observed phenomenon as a degree of the overturn of macromolecular chains. The results obtained are discussed in relation to the number of OH groups present in the liquids and their ability to form hydrogen bonds.