This paper provides evidence for the adsorption of suberin onto cellulose and illustrates the effect of suberin and suberin fatty acid (SFA) treatment on the physicochemical surface properties of the modified cellulose substrate. Suberin and SFA were extracted from the outer bark of birch (Betula pendula Roth) and characterized by Fourier transform infrared spectroscopy and gas chromatography-mass spectrometry (GC–MS). The results confirmed the extracts to comprise primarily of depolymerised suberin and SFA. The adsorption of suberin and SFA on cellulose was studied by treating the filter paper with solutions of suberin and SFA. Changes in the surface topography of the filter paper following treatment were analysed with atomic force microscopy and the effect on wettability assessed through contact angle measurement. X-ray photoelectron spectroscopy analysis showed that the cellulose substrate was evenly covered. GC–MS analysis showed which suberin monomers were preferentially adsorbed on the cellulose surfaces. Based on these results, it can be inferred that suberin and SFA have the potential for cellulose surface modification. This finding supports the view that suberin and SFA could be used to improve the interfacial properties of cellulose fibre reinforced composites. The novelty in this study is that it provides detailed information, derived though advanced experimental techniques, about the manner and mechanisms behind changes in surface physiochemical properties of cellulose obtained through suberin and SFA adsorption.

本文提供了将Suberin吸附到纤维素上的证据，并说明了Suberin和Suberin脂肪酸（SFA）处理对改性纤维素底物的理化表面性能的影响。从桦树（Betula pendula）外树皮中提取了Suberin和SFA。Roth），并通过傅立叶变换红外光谱和气相色谱-质谱（GC-MS）进行表征。结果证实提取物主要包含解聚的木栓质和SFA。通过用苏木精和SFA溶液处理滤纸，研究了苏木精和SFA在纤维素上的吸附。用原子力显微镜分析处理后滤纸表面形貌的变化，并通过接触角测量来评估对润湿性的影响。X射线光电子能谱分析表明纤维素底物被均匀覆盖。GC-MS分析表明，哪些suberin单体优先吸附在纤维素表面。基于这些结果，可以推断出木脂蛋白和SFA具有纤维素表面改性的潜力。该发现支持以下观点：木栓质和SFA可用于改善纤维素纤维增强复合材料的界面性能。这项研究的新颖之处在于，它通过先进的实验技术，提供了详细信息，这些信息涉及通过木栓质和SFA吸附获得的纤维素表面理化性质变化的方式和机理。