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How To Measure Work of Adhesion and Surface Tension of Soft Polymeric Materials
Macromolecules ( IF 5.1 ) Pub Date : 2018-05-18 00:00:00 , DOI: 10.1021/acs.macromol.8b00738 Yuan Tian 1 , Maria Ina 2 , Zhen Cao 1 , Sergei S. Sheiko 2 , Andrey V. Dobrynin 1
Macromolecules ( IF 5.1 ) Pub Date : 2018-05-18 00:00:00 , DOI: 10.1021/acs.macromol.8b00738 Yuan Tian 1 , Maria Ina 2 , Zhen Cao 1 , Sergei S. Sheiko 2 , Andrey V. Dobrynin 1
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Knowledge of the work of adhesion and surface tension directs the design of new materials for coatings, adhesives, and lubricants. We develop an approach to determine both properties from analysis of equilibrium indentations of rigid particles in contact with soft polymeric materials. In accord with coarse-grained molecular dynamics simulations, the indentation depth is described by the crossover expression combining together the adhesion and wetting models, which takes into account both the elastic energy of the contact and full surface free energy change outside and inside the contact area. The crossover expression is applied to obtain the work of adhesion and substrate surface tension for polystyrene (PS), carboxyl-modified polystyrene (PS-COOH), and poly(methyl methacrylate) (PMMA) particles in contact with poly(dimethylsiloxane) (PDMS) networks made of brush-like and linear chains. This analysis results in the work of adhesion W = 48.0 ± 2.9 mN/m for PS/PDMS, W = 268.4 ± 27.0 mN/m for PS-COOH/PDMS, and W = 56.2 ± 2.4 mN/m for PMMA/PDMS and the surface tension of the PDMS substrate to be γs = 23.6 ± 2.1 mN/m.
中文翻译：
如何测量软聚合物材料的粘附力和表面张力
对粘附力和表面张力的了解，指导了用于涂料，粘合剂和润滑剂的新材料的设计。我们开发了一种通过与软质聚合物材料接触的刚性颗粒的平衡压痕分析来确定两种性能的方法。与粗粒分子动力学模拟相一致，压痕深度由结合粘合和润湿模型的交叉表达式描述，该模型兼顾了接触的弹性能和接触区域内外的整个表面自由能的变化。应用交叉表达式获得聚苯乙烯（PS），羧基改性聚苯乙烯（PS-COOH），与聚甲基丙烯酸甲酯（PMMA）颗粒接触，该聚二甲基硅氧烷（PDMS）网络由刷状和线性链制成。该分析导致粘附工作PS / PDMS的W = 48.0±2.9 mN / m，PS -COOH / PDMS的W = 268.4±27.0 mN / m，PMMA / PDMS的W = 56.2±2.4 mN / m是γ小号= 23.6±2.1 mN / m的。
更新日期：2018-05-18
中文翻译：
如何测量软聚合物材料的粘附力和表面张力
对粘附力和表面张力的了解，指导了用于涂料，粘合剂和润滑剂的新材料的设计。我们开发了一种通过与软质聚合物材料接触的刚性颗粒的平衡压痕分析来确定两种性能的方法。与粗粒分子动力学模拟相一致，压痕深度由结合粘合和润湿模型的交叉表达式描述，该模型兼顾了接触的弹性能和接触区域内外的整个表面自由能的变化。应用交叉表达式获得聚苯乙烯（PS），羧基改性聚苯乙烯（PS-COOH），与聚甲基丙烯酸甲酯（PMMA）颗粒接触，该聚二甲基硅氧烷（PDMS）网络由刷状和线性链制成。该分析导致粘附工作PS / PDMS的W = 48.0±2.9 mN / m，PS -COOH / PDMS的W = 268.4±27.0 mN / m，PMMA / PDMS的W = 56.2±2.4 mN / m是γ小号= 23.6±2.1 mN / m的。
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