聚二甲基硅氧烷
大气压等离子体
胶粘剂
材料科学
粘附
复合材料
喷射(流体)
大气压力
等离子体
机械
气象学
量子力学
物理
图层(电子)
作者
José Antonio Jofre-Reche,Jerome Pulpytel,Farzaneh Arefi-Khonsari,José Miguel Martín-Martínez
标识
DOI:10.1088/0022-3727/49/33/334001
摘要
The surface properties of polydimethylsiloxane (PDMS) were modified by treatment with
an atmospheric pressure rotating plasma jet (APPJ) and the surface modifications were
studied to assess its hydrophilicity and adhesion to acrylic adhesive tape intended for
medical applications. Furthermore, the extent of hydrophobic recovery under different
storage conditions was studied. The surface treatment of PDMS with the APPJ under optimal
conditions noticeably increased the oxygen content and most of the surface silicon species
were fully oxidized. A brittle silica-like layer on the outermost surface was created showing
changes in topography due to the formation of grooves and cracks. A huge improvement in
T-peel and the shear adhesive strength of the APPJ-treated PDMS surface/acrylic tape joints
was obtained. On the other hand, the hydrophilicity of the PDMS surface increased noticeably
after the APPJ treatment, but 24 h after treatment almost 80% hydrophobicity was recovered
and the adhesive strength was markedly reduced with time after the APPJ treatment. However,
the application of an acrylic adhesive layer on the just-APPJ-treated PDMS surface retained
the adhesive strength, limiting the extent of hydrophobic recovery.
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