Controlling Surface Hydrophobicity of Cellulose-Lignin Composite Coatings

Q2 Materials Science

Polymers from Renewable Resources Pub Date : 2018-09-04 DOI:10.1177/204124791800900201

A. A. Y. Mbiada, S. Musa, O. Richter, A. Kneer, S. Barbe

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引用次数: 3

Abstract

In the first part of this study, lignin esters were prepared by acylating lignin with organic acid anhydrides containing short saturated chains of various lengths (C2 to C4). The prepared esters were then mixed at different ratios with cellulose acetate in order to produce hydrophilic cellulose-lignin composite coatings. The impact of the chain length and the ratio of lignin ester on the surface hydrophobicity of the coatings were determined by measuring contact angles with deionized water. The second part of this contribution was dedicated to the development of hydrophobic cellulose-lignin composite coatings with controlled surface hydrophobicity. For this purpose, cellulose oleate and lignin oleate were both prepared by acylating cellulose and lignin with oleyl chloride (C18:1). Contact angles up to 175° were measured at the surface of the prepared coatings and a technical approach for the control of surface hydrophobicity was presented. Finally, a process for the manufacture of hydrophobic cellulose-lignin composite coatings was designed. Polymers involved in this process are exclusively derived from renewable resources (Wood & High Oleic Sunflower Oil).

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纤维素-木质素复合涂层的表面疏水性控制

在本研究的第一部分中，通过用含有不同长度的短饱和链（C2至C4）的有机酸酐酰化木质素来制备木质素酯。然后将制备的酯与乙酸纤维素以不同比例混合，以制备亲水性纤维素-木质素复合涂层。通过测量与去离子水的接触角，确定了链长和木质素酯比例对涂层表面疏水性的影响。该贡献的第二部分致力于开发具有可控表面疏水性的疏水性纤维素-木质素复合涂层。为此，油酸纤维素和油酸木质素都是通过用油酰氯（C18:1）酰化纤维素和木质素来制备的。在制备的涂层表面测量了高达175°的接触角，并提出了控制表面疏水性的技术方法。最后，设计了一种疏水性纤维素-木质素复合涂料的制备工艺。该工艺中涉及的聚合物完全来自可再生资源（木材和高油酸向日葵油）。

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来源期刊

Polymers from Renewable Resources Materials Science-Polymers and Plastics

CiteScore

3.50

自引率

0.00%

发文量

期刊介绍： Polymers from Renewable Resources, launched in 2010, publishes leading peer reviewed research that is focused on the development of renewable polymers and their application in the production of industrial, consumer, and medical products. The progressive decline of fossil resources, together with the ongoing increases in oil prices, has initiated an increase in the search for alternatives based on renewable resources for the production of energy. The prevalence of petroleum and carbon based chemistry for the production of organic chemical goods has generated a variety of initiatives aimed at replacing fossil sources with renewable counterparts. In particular, major efforts are being conducted in polymer science and technology to prepare macromolecular materials based on renewable resources. Also gaining momentum is the utilisation of vegetable biomass either by the separation of its components and their development or after suitable chemical modification. This journal is a valuable addition to academic, research and industrial libraries, research institutions dealing with the use of natural resources and materials science and industrial laboratories concerned with polymer science.