Robust Starch/Regenerated Cellulose All‐Polysaccharides Bilayer Films with Excellent Mechanical Properties,Starch

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Robust Starch/Regenerated Cellulose All‐Polysaccharides Bilayer Films with Excellent Mechanical Properties
Starch ( IF 2.6 ) Pub Date : 2020-03-11 , DOI: 10.1002/star.201900153
Geng Cheng ₁ , Yu‐Jun Wei ₁ , Mi Zhou ₁ , Fei Cheng ₁ , Yi Lin ₁ , Pu‐Xin Zhu ₁

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Starch‐regenerated cellulose bilayer films containing cellulose nanofibers in the casted regenerated cellulose layer are obtained by using a dissolution‐regeneration‐suction filtration approach. Scanning electron micrograph, thermogravimetric analysis, differential scanning calorimetry, and X‐ray diffraction are used to characterize the properties of the composite films. The tensile strength and modulus of the nanocomposite containing 40 wt% regenerated cellulose are increased by 156% and 111%, respectively, compared with pure starch film. Additionally, the obtained films displayed low water absorption, excellent thermal stability, and optical performance. More importantly, the film fabrication process adopted is environmentally benign, cost‐effective, and easy to operate. The all‐polysaccharides bilayer films can be used as a renewable material for industrial applications such as packaging to substitute petroleum‐based polymers in a wide range of applications.

中文翻译：

具有优异机械性能的坚固的淀粉/再生纤维素全多糖双层薄膜

通过溶解-再生-吸滤法获得的流延再生纤维素层中包含纤维素纳米纤维的淀粉再生纤维素双层薄膜。扫描电子显微照片，热重分析，差示扫描量热法和X射线衍射用于表征复合膜的性能。与纯淀粉薄膜相比，含有40 wt％再生纤维素的纳米复合材料的拉伸强度和模量分别提高了156％和111％。另外，获得的膜显示出低吸水率，优异的热稳定性和光学性能。更重要的是，采用的薄膜制造工艺对环境无害，具有成本效益且易于操作。

更新日期：2020-03-11

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