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| Effect of Cellulose Nanofibers on the Property of Cellulose Nanofiber/Polyvinyl Alcohol Composite Film |
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| DOI：10.11981/j.issn.1000-6842.2017.04.27 |
| Key Words:cellulose nanofiber； composite film； polyvinyl alcohol； high strength； tensile property |
| Fund Project:国家林业公益性行业科研专项(201304609)；中国博士后科学基金资助项目(164845)。 |
| Author Name | Affiliation | | 王志国 | 南京林业大学江苏省制浆造纸科学与技术重点实验室，江苏省生物质绿色燃料与化学品重点实验室，江苏南京，210037 | | 蒋 杰 | 南京林业大学江苏省制浆造纸科学与技术重点实验室，江苏省生物质绿色燃料与化学品重点实验室，江苏南京，210037 | | 司玉丹 | 南京林业大学江苏省制浆造纸科学与技术重点实验室，江苏省生物质绿色燃料与化学品重点实验室，江苏南京，210037 | | 范一民 | 南京林业大学江苏省制浆造纸科学与技术重点实验室，江苏省生物质绿色燃料与化学品重点实验室，江苏南京，210037 |
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| Abstract: |
| Cellulose nanofibers (CNF) prepared from 2,2,6,6-tetramethylpiperidiine-1-oxyl (TEMPO) oxidized bagasse pulp had large aspect ratio with diameters of 4~10 nm. Polyvinyl alcohol (PVA) was mixed with CNF to prepare CNF/PVA composite film, and the effects of glycerol and polyethylene glycol-400 (PEG-400) on light transmittance and mechanical properties of CNF/PVA film were studied. The application of pure CNF or PVA film was limited by their unsatisfied mechanical properties. The results showed that CNF/PVA film had both high mechanical strength and extensibility. The film containing 25% CNF had high light transmittance (>90%) in 400~700 nm, high Young’s modulus of 4.72 GPa and elongation at break of 6.92%. The light transmittances of the composite film declined with the addition of either glycerol or PEG-400. The glycerol and PEG-400 made the film more flexible but less stiff. |
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