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首页> 外文期刊>Langmuir: The ACS Journal of Surfaces and Colloids >Correlation of Surface Morphology and Interfacial Adhesive Behavior between Cellulose Surfaces: Quantitative Measurements in Peak-Force Mode with the Colloidal Probe Technique
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Correlation of Surface Morphology and Interfacial Adhesive Behavior between Cellulose Surfaces: Quantitative Measurements in Peak-Force Mode with the Colloidal Probe Technique

机译：纤维素表面表面形态和界面粘合剂行为的相关性：胶体探针技术的峰值模式中的定量测量

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摘要

A better understanding of cellulose-cellulose interactions is needed in applications such as paper making and all-cellulose composites. To date, cellulose-cellulose studies have been chemistry-oriented. In these studies, the sample surfaces have been modified with different chemicals and then tested under an atomic force microscope (AFM) using a colloidal probe (CP). Studies of cellulose-cellulose interaction based on sample morphology and mechanical properties have been rare as a result of the complex surface structure and the soft texture of the cellulose. The current surface interaction models, such as the Johnson-Kendall-Roberts (JKR) model in which the studied bodies are assumed to have smooth surfaces, can no longer fully reveal the interfacial behavior between two cellulose surfaces. Therefore, we propose a new type of contact model for rough-rough interaction by dividing the surface contacts into primary and secondary levels. The main idea of the new model is to take into account local individual contact details between rough surfaces. The model considers the effect of the surface topography by including the asperities and valleys on a cellulose sphere used as the colloidal probe in imaging the topography of a cellulose membrane (CM). In addition, the correlation between the surface morphology and adhesion is studied. To verify the importance of including the effect of the surface roughness in contact analysis and validate our hypothesis on the correlation between the surface morphology and adhesion, an extensive set of experiments was performed. In the experiments, a combination of the AFM peak-force mode (PFM) and the CP technique was employed to acquire a massive amount of information on cellulose-cellulose interactions by measuring the adhesion among six CSs of different sizes and a CM.
机译：需要在应用程序中，如造纸和全纤维素复合纤维素，纤维素相互作用的更好的理解。迄今为止，纤维素，纤维素研究已经化学为主。在这些研究中，样品表面已经被改性以不同的化学品，然后使用胶体探针（CP）的原子力显微镜（AFM）下进行测试。已经基于样本的形态和机械性能纤维素纤维素相互作用的研究已经罕见作为复杂表面结构的结果和纤维素的质地柔软。目前表面相互作用的模型，如约翰逊 - 肯德尔 - 罗伯茨（JKR），其中所研究的身体都被认为具有光滑的表面模型，可以不再完全露出两颗纤维素表面之间的界面行为。因此，我们通过将表面接触到初级和次级水平提出了一种新类型的用于粗糙相互作用接触模型的。新模式的主要思想是考虑到粗糙表面之间考虑当地个人联系方式。该模型考虑了表面形貌的通过包括在成像纤维素膜（CM）的形貌用作胶体探针纤维素球的凹凸和谷的效果。另外，表面形态和粘合之间的相关性进行了研究。为了验证包括接触分析的表面粗糙度的影响的重要性，并验证了我们对表面形态和粘合之间的相关性的假设，进行了广泛的一组实验。在实验中，在AFM峰值力模式（PFM）和CP技术的组合物中使用，通过测量在六个CS的不同的尺寸和CM的粘附以获得对纤维素的纤维素相互作用信息的巨量。

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