Facile synthesis of fluorine-free cellulosic paper with excellent oil and grease resistance
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ORIGINAL RESEARCH
Facile synthesis of fluorine-free cellulosic paper with excellent oil and grease resistance Junxian Xie . Jun Xu . Zheng Cheng . Junjun Chen . Zhili Zhang . Tong Chen . Rendang Yang . Jie Sheng
Received: 1 December 2019 / Accepted: 20 May 2020 Ó Springer Nature B.V. 2020
Abstract Fluorine-free cellulosic paper was successfully obtained by coating the glassine base paper with eco-friendly cellulosic coating, which was made from dissolving cellulose in 8 wt% NaOH/12 wt% urea aqueous solution. Then the coated paper was severally immersed into CH3COOH, Na2SO4, and H2O solution to coagulate and regenerate. Benefiting from the compact matrix and fully covered surface, the resultant cellulosic paper exhibited favorable barrier properties and mechanical performance. Notably, the paper coagulated with CH3COOH displayed the reduction in water–vapor transmission rate, air permeability, and uptake of organic solvents due to its low porosity (26.8%) and narrow pore size distribution (0.1–0.36 lm). The tensile strength and elongation at
J. Xie J. Xu Z. Cheng (&) J. Chen T. Chen R. Yang (&) J. Sheng State Key Laboratory of Pulp and Paper Engineering, Plant Fiber Research Center, South China University of Technology, Guangzhou 510640, CN, China e-mail: [email protected] R. Yang e-mail: [email protected]
break of papers treated by CH3COOH at coating weight of 5 g/m2 were increased by 72.1% and 34.0%, respectively. In summary, the fluorine-free cellulosic paper with high oil and grease resistance is attractive for the development of high-performance materials for food packing applications. Graphic abstract Fluorine-free paper was obtained from the glassine base paper coated with eco-friendly, non-fluorinated, and degradable cellulosic coating, then coagulated with CH3COOH, Na2SO4, and H2O solution, respectively. The resultant functional papers displayed enhanced barrier properties (oil, organic solvent, vapor, and gas) and mechanical performance.
Z. Cheng School of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou 510640, CN, China Z. Zhang School of Light Industry and Engineering, Qilu University of Technology, Jinan 250353, China
J. Xu Tianjin Key Laboratory of Pulp and Paper, Tianjin University of Science and Technology, Tianjin 300457, China
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Cellulose
Keywords Fluorine-free Cellulosic paper Oil and grease resistance Barrier properties Food packaging
Introduction With the improvement of environmental awareness and consumption level, many attempts have been undertaken to achieve renewable and biodegradable material to replace glass, plastic, and metal in packaging applications (Wro´blewska-Krepsztul et al. 2018; Farmahini-Farahani et al. 2015). Cellulosebased paper has attracted considerable attention in recent decades owing to its world-wide availability of raw materials and excellent mechanical properties (Li et al. 2019; Tang et al. 2016). The glassine base papers are generally used for packagin
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