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Open volume in bioadhesive detected by positron annihilation lifetime spectroscopy.

机译:通过正电子an没寿命光谱法检测生物粘合剂中的开放体积。

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Barnacles attach to a wide variety of surfaces underwater and show substrate-specific adhesion mechanisms. Investigating and understanding these mechanisms is a key for developing new technical adhesives. We expected open volume (porosity) at the sub-nanometre scale to occur in barnacle adhesive. With positron annihilation lifetime spectroscopy (PALS) it is possible to detect porosity at the nanometre scale by determining the lifetime of positrons. This method has not been applied to bioadhesives so far. We showed that PALS is a suitable technique for the investigation of the barnacle base and its adhesive with respect to open volume. The results were interpreted using a standard model adapted from polymers. We thereby estimated pore sizes of 0.5 nm.
机译:藤壶附着在水下的各种表面上,并表现出特定于基材的粘附机制。研究和理解这些机制是开发新技术粘合剂的关键。我们预计在藤壶粘合剂中会出现亚纳米级的开口体积(孔隙率)。使用正电子an没寿命谱(PALS),可以通过确定正电子的寿命来检测纳米级的孔隙率。迄今为止,该方法尚未应用于生物粘合剂。我们表明,PALS是一种合适的技术,用于研究藤壶底座及其相对于开口体积的粘合剂。使用从聚合物改编的标准模型解释结果。因此,我们估计孔径为0.5 nm。

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