Amylose/cellulose nanofiber composites for all-natural, fully biodegradable and flexible bioplastics
Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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Amylose/cellulose nanofiber composites for all-natural, fully biodegradable and flexible bioplastics. / Xu, Jinchuan; Sagnelli, Domenico; Faisal, Marwa; Perzon, Alixander; Taresco, Vincenzo; Mais, Marco; Giosafatto, Concetta Valeria L.; Hebelstrup, Kim H.; Ulvskov, Peter; Jorgensen, Bodil; Chen, Ling; Howdle, Steven M.; Blennow, Andreas.
I: Carbohydrate Polymers, Bind 253, 117277, 2021.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Amylose/cellulose nanofiber composites for all-natural, fully biodegradable and flexible bioplastics
AU - Xu, Jinchuan
AU - Sagnelli, Domenico
AU - Faisal, Marwa
AU - Perzon, Alixander
AU - Taresco, Vincenzo
AU - Mais, Marco
AU - Giosafatto, Concetta Valeria L.
AU - Hebelstrup, Kim H.
AU - Ulvskov, Peter
AU - Jorgensen, Bodil
AU - Chen, Ling
AU - Howdle, Steven M.
AU - Blennow, Andreas
PY - 2021
Y1 - 2021
N2 - Thermoplastic, polysaccharide-based plastics are environmentally friendly. However, typical shortcomings include lack of water resistance and poor mechanical properties. Nanocomposite manufacturing using pure, highly linear, polysaccharides can overcome such limitations. Cast nanocomposites were fabricated with plant engineered pure amylose (AM), produced in bulk quantity in transgenic barley grain, and cellulose nanofibers (CNF), extracted from agrowaste sugar beet pulp. Morphology, crystallinity, chemical heterogeneity, mechanics, dynamic mechanical, gas and water permeability, and contact angle of the films were investigated. Blending CNF into the AM matrix significantly enhanced the crystallinity, mechanical properties and permeability, whereas glycerol increased elongation at break, mainly by plasticizing the AM. There was significant phase separation between AM and CNF. Dynamic plasticizing and anti-plasticizing effects of both CNF and glycerol were demonstrated by NMR demonstrating high molecular order, but also non-crystalline, and evenly distributed 20 nm-sized glycerol domains. This study demonstrates a new lead in functional polysaccharide-based bioplastic systems.
AB - Thermoplastic, polysaccharide-based plastics are environmentally friendly. However, typical shortcomings include lack of water resistance and poor mechanical properties. Nanocomposite manufacturing using pure, highly linear, polysaccharides can overcome such limitations. Cast nanocomposites were fabricated with plant engineered pure amylose (AM), produced in bulk quantity in transgenic barley grain, and cellulose nanofibers (CNF), extracted from agrowaste sugar beet pulp. Morphology, crystallinity, chemical heterogeneity, mechanics, dynamic mechanical, gas and water permeability, and contact angle of the films were investigated. Blending CNF into the AM matrix significantly enhanced the crystallinity, mechanical properties and permeability, whereas glycerol increased elongation at break, mainly by plasticizing the AM. There was significant phase separation between AM and CNF. Dynamic plasticizing and anti-plasticizing effects of both CNF and glycerol were demonstrated by NMR demonstrating high molecular order, but also non-crystalline, and evenly distributed 20 nm-sized glycerol domains. This study demonstrates a new lead in functional polysaccharide-based bioplastic systems.
KW - Bioplastics
KW - Amylose
KW - Starch
KW - Cellulose nanofibers
KW - Composite films
U2 - 10.1016/j.carbpol.2020.117277
DO - 10.1016/j.carbpol.2020.117277
M3 - Journal article
C2 - 33278948
VL - 253
JO - Carbohydrate Polymers
JF - Carbohydrate Polymers
SN - 0144-8617
M1 - 117277
ER -
ID: 255111934