Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 123, Issue -, Pages 654-660Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.indcrop.2018.07.043
Keywords
Starch; Cellulose nanofibers; Composite films; Morphology; Mechanical properties
Categories
Funding
- Higher Educational Scientific Research Projects of Inner Mongolia Autonomous Region [NJZY17304]
- Beijing Municipal Science and Technology Commission Project [Z121100001312010, D12110003112002]
- National Natural Science Foundation of China [31000813, 21563002]
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Starch nanocomposites films were successfully prepared using the isolated cellulose nanofibers (CNFs) at loading from 5 to 20% by solution casting. The morphology, crystallinity, surface hydrophobicity, water vapor permeability, opacity, and mechanical test of nanocomposites films were studied. The CNFs were uniformly distributed within these films up to 15% of CNFs. The incorporation of 20% CNFs in the composite film produced selective aggregation and, thus, inhomogeneity of the CNFs. The contact angle values increased from 49.46 (starch-only films) to 88.57 degrees (CNFs loading at 20%). The incorporation of CNFs hinders the diffusion or permeability of water vapor through the composite. Addition of CNFs to starch films resulted in significant improvement in glass transition temperature (T-g), tensile strength and modulus of elasticity of nanocomposites films.
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