Effect of Oligomer Segregation on the Aggregation State and Strength at the Polystyrene/Substrate Interface,ACS Macro Letters

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Effect of Oligomer Segregation on the Aggregation State and Strength at the Polystyrene/Substrate Interface
ACS Macro Letters ( IF 5.1 ) Pub Date : 2022-03-23 , DOI: 10.1021/acsmacrolett.2c00062
Manabu Inutsuka ₁ , Hirohmi Watanabe ₁ , Masaru Aoyagi ₁ , Norifumi L Yamada ₂ , Chisa Tanaka ₃ , Takayuki Ikehara ₃ , Daisuke Kawaguchi ₄ , Satoru Yamamoto ₅ , Keiji Tanaka ₄

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The interfacial strength of polystyrene (PS) with and without PS oligomers in contact with a glass substrate was examined to determine the relationship between the interfacial aggregation state and adhesion. The shear bond strength and adsorbed layer thickness of neat PS exhibited a similar dependence on the thermal annealing time: they increased to constant values within almost the same time. This implies that the adhesion of the polymer is closely related to the formation of an adsorbed layer at the adhesion interface. Nevertheless, in the case of PS with a small amount of oligomer, the shear bond strength decreased, while the adsorbed layer thickness was almost the same as that of neat PS. Based on the results of interfacial analyses, we propose that the interfacial segregation of the oligomer reduced the entanglement between the interfacial free chains in the adsorbed layer and the bulk chains.

中文翻译：

低聚物偏析对聚苯乙烯/基材界面聚集状态和强度的影响

检测了有和没有 PS 低聚物的聚苯乙烯 (PS) 与玻璃基材接触的界面强度，以确定界面聚集状态和粘附力之间的关系。纯 PS 的剪切粘合强度和吸附层厚度对热退火时间表现出类似的依赖性：它们几乎在同一时间内增加到恒定值。这意味着聚合物的粘附性与粘附界面处吸附层的形成密切相关。然而，在具有少量低聚物的 PS 的情况下，剪切粘合强度降低，而吸附层厚度与纯 PS 几乎相同。根据界面分析的结果，

更新日期：2022-03-23

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