Effect of lignin on performance of lignocellulose nanofibrils for durable superhydrophobic surface
- 57 Downloads
In this work, lignocellulose nanofibrils (LCNFs) were initially prepared from 4, 8 and 16% sodium hydroxide pretreated wheat straw by mechanical grinding to evaluate the effect of lignin on the fibrillation process, and then superhydrophobic surface was prepared through coating fluoroalkyl silane modified LCNFs on glass and filter paper. The LCNFs with various amounts of lignin possess a fine structure with an average diameter of 13–17 nm and the length in microscale. The superhydrophobic surface was obtained by the LCNFs modified with the fluoroalkyl silane at an extremely low dosage (0.31 v/v%) owing to the presence of inherent hydrophobic lignin for synergetic effect. Although the high content of lignin in LCNFs has minor negative effect on the abrasion resistance of the as-prepared superhydrophobic surfaces, such a superhydrophobic surface has excellent water repellency and self-cleaning properties that offer LCNFs many promising applications.
KeywordsLignocellulose nanofibrils (LCNFs) Lignin Superhydrophic surface Water Contact angle (WCA) Modification Silane
This work was supported by the National Natural Science Foundation of China (Grant Nos. 31770623 and 31730106).
- Ballner D, Herzele S, Keckes J, Edler M, Griesser T, Saake B, Liebner F, Potthast A, Paulik C, Gindl-Altmutter W (2016) Lignocellulose nanofiber-reinfored polystyrene produced from composite microspheres obtained in suspension polymerization shows superior mechanical performance. ACS Appl Mater Interfaces 8(21):13520–13525CrossRefGoogle Scholar
- Browning BL (1967) Methods of wood chemistry, vol 2. Wiley, New YorkGoogle Scholar
- Figueiredo P, Lintinen K, Kiriazis A, Hynninen V, Liu Z, Bauleth-Ramos T, Rahikkala A, Correia A, Kohout T, Sarmento B, Yli-Kauhaluoma J, Hirvonen J, Ikkala O, Kostiainen MA, Santos HA (2017) In vitro evaluation of biodegradable lignin-based nanoparticles for drug delivery and enhanced antiproliferation effect in cancer cells. Biomaterials 121:97–108CrossRefGoogle Scholar
- Li YY, Wang CG, Zhang SY (2018) Study on combustion characteristics of lignin in black liquor of kraft pulp. J For Eng 3(2):59–63Google Scholar
- Nagatani A (2017) Characteristics and applications of cellulose nanofiber reinforced rubber composites. Int Polym Sci Technol 44:7–14Google Scholar
- Sluiter A, Hames B, Ruiz R, Scarlata C, Sluiter J, Templeton, D, Crocker D (2008) Determination of structural carbohydrates and lignin in biomass. Laboratory Analytical Procedure, NREL, Report No. TP-510-42618Google Scholar
- Wen JL, Chen TY, Sun RC (2017) Research progress on separation and structural analysis of lignin in lignocellulosic biomass. J For Eng 2(5):76–84Google Scholar
- Wu QL, Mei CT, Han JQ, Yue YY, Xu XW (2018) Preparation technology and industrialization status of nanocellulose. J For Eng 3(1):1–9Google Scholar
- Zhang TM, Zhang Y, Jiang H, Liu S, Yao Y (2018) Characterization of CNF/CNC composite aerogel. J For Eng 3(5):91–96Google Scholar