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Robust Starch/Regenerated Cellulose All‐Polysaccharides Bilayer Films with Excellent Mechanical Properties
Author(s) -
Cheng Geng,
Wei YuJun,
Zhou Mi,
Cheng Fei,
Lin Yi,
Zhu PuXin
Publication year - 2020
Publication title -
starch ‐ stärke
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.62
H-Index - 82
eISSN - 1521-379X
pISSN - 0038-9056
DOI - 10.1002/star.201900153
Subject(s) - materials science , thermogravimetric analysis , cellulose , differential scanning calorimetry , regenerated cellulose , thermal stability , bilayer , starch , chemical engineering , nanocomposite , composite material , polymer , membrane , chemistry , organic chemistry , biochemistry , physics , engineering , thermodynamics
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.