Preparation and characterization of nanocrystalline cellulose/Eucommia ulmoides gum nanocomposite film

Sun, Qianqian; Zhao, Xinkun; Wang, Dongmei; Dong, Juane; She, Diao; Peng, Pai

doi:10.1016/j.carbpol.2017.11.070

Cited by 79 publications

(36 citation statements)

References 40 publications

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“…This might be associated with the best dispersion of CNC in the chitosan matrix where CNC was dispersed uniformly in the nanometer scale in the chitosan matrix, leading to strong hydrogen bonding between the CNC and chitosan molecular chains, resulting in the formation of a rigid network of CNC, which causes an increase in the tensile modulus and elongation at break of the films [37]. Similar findings were also reported by Sun et al [6] where the maximum values in tensile strength, tensile modulus, and elongation at break were achieved for Eucommia ulmoides gum film containing 4 wt% CNC. However, the tensile strength, tensile modulus, and elongation at break decreased drastically as the CNC content was further increased to 8 wt%.…”

Section: Tensile Propertiessupporting

confidence: 82%

“…Some of the main advantages of bio-based packaging films are their environmentally friendly nature, their biodegradability, and the nutritional value of their food products, as well as their contribution to the maintenance of food quality, and provision of microbial safety to users as a protective barrier [3,4]. Due to their environmentally friendly and biodegradable properties, many natural biopolymer materials have been widely used to make biodegradable food packaging materials, including chitosan, cellulose, hemicellulose, lignin, pectin, starch, agar, Eucommia ulmoides gum, and natural rubbers [1,[5][6][7].…”

Section: Introductionmentioning

confidence: 99%

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Fabrication and Characterization of Chitosan/Cellulose Nanocrystal/Glycerol Bio-Composite Films

2021

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Cellulose nanocrystal (CNC)-reinforced bio-composite films containing glycerol were produced using the solution casting technique. The influences of the addition of CNC (2, 4, and 8 wt%) and glycerol (10, 20, and 30 wt%) on the properties of the bio-composite films were studied in the present work. The resulting films were characterized by X-ray diffraction (XRD), Fourier transform infrared (FT-IR) spectroscopy, and thermogravimetry analysis (TGA), and according to their tensile, water absorption, and light transmission behavior. The introduction of 4 wt% CNC into the chitosan film did not affect the thermal stability, but the presence of 20 wt% glycerol reduced the thermal stability. The addition of 4 wt% CNC to the chitosan film increased its tensile strength, tensile modulus, and elongation at break by 206%, 138%, and 277%, respectively. However, adding more than 8 wt% CNC resulted in a drastic reduction in the strength and ductility of the chitosan film. The highest strength and stiffness of the chitosan bio-composite film were attained with 4 wt% CNC and 20 wt% glycerol. The water absorption and light transmission of the chitosan film were reduced dramatically by the presence of both CNC and glycerol.

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Section: Tensile Propertiessupporting

confidence: 82%

Section: Introductionmentioning

confidence: 99%

Fabrication and Characterization of Chitosan/Cellulose Nanocrystal/Glycerol Bio-Composite Films

2021

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“…Cellulose nanocrystals (CNCs) have been used for various applications, such as antimicrobial/antiviral systems, tissue engineering, drug/gene delivery, biosensors, adsorbents in wastewater treatment, super-capacitors, conductive films, electronic sensors, Pickering emulsifier, drilling fluid, antioxidant or food additive/packaging. In recent years, there has been an increasing interest in the production of transparent thin films of CNCs with special properties and the number of research papers published in this field has been growing exponentially (Lagerwall et al, 2014;Majoinen, Kontturi, Ikkala, & Gray, 2012;Sun et al, 2018;Tang et al, 2017). CNC films are highly hydrophilic and this property can limit their applications in certain areas.…”

Section: Introductionmentioning

confidence: 99%

Cellulose nanocrystal/amino-aldehyde biocomposite films

Nagy

Csiszár

Kun

et al. 2018

Carbohydrate Polymers

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From the suspensions of cellulose nanocrystals (CNCs) derived from cotton and flax by acidic hydrolysis, transparent and smooth films were produced with different plasticizers and an amino-aldehyde based cross-linking agent in a wide composition range by a simultaneous casting and wet cross-linking process. The effect of cross-linker concentration on the optical and tensile properties and on the morphology of CNC films was investigated by various measurements. The interaction of films with liquid water and water vapour was also characterized by water sorption and water contact angle as well as performing a sinking test. Cross-linking improved the transparency, reduced the porosity and surface free energy, and prevented the delamination of CNC films in water at a concentration of 10% or higher. The surface of CNC films is basic in character and has an electron donor property. The CNC/amino-aldehyde films had a high tensile strength (45 MPa) and modulus (11 GPa).

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“…Therefore, almost no EUG was used alone in the rubber industry. In most cases, EUG was blended with other materials, such as cis‐ polyisoprene, 19–22 chlorobutadiene rubber, 23 cellulose, 24,25 poly(ε‐caprolactone), 26 polylactide, 27 polypropylene, 28 to improve the properties of composites or was used to prepare shape memory materials 29–35 …”

Section: Introductionmentioning

confidence: 99%

A high toughness elastomer based on naturalEucommia ulmoidesgum

Zhao

et al. 2020

J of Applied Polymer Sci

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Eucommia ulmoides gum (EUG) is a kind of bio-based polymer with similar structure to natural rubber (NR). However, it behaves as hard plastic at room temperature due to crystallization, which makes it not as widely used as NR. Herein, a new bio-based elastomer (HEUG) was prepared by rhodiumcatalyzed hydrogenation of EUG for the first time. 1 H-NMR and 13 C-NMR spectroscopy confirmed the structure of HEUG, and wide angle X-ray diffraction, polarizing light microscopy showed that the crystal was gradually destroyed in the hydrogenation process, finding that when the degree of hydrogenation is more than 16.5%, HEUG transformed from plastic to elastomer at room temperature. Besides, the Synchrotron Radiation experiment showed that HEUG with hydrogenation of 85.9% could be self-reinforced by strain-induced crystallization during stretching, which make it has excellent tensile strength and toughness (21.4 MPa and 68.1 MJ m −3 , respectively). This new bio-based elastomer has the potential to replace NR and has a wide application prospect in rubber industry.

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Preparation and characterization of nanocrystalline cellulose/Eucommia ulmoides gum nanocomposite film

Cited by 79 publications

References 40 publications

Fabrication and Characterization of Chitosan/Cellulose Nanocrystal/Glycerol Bio-Composite Films

Fabrication and Characterization of Chitosan/Cellulose Nanocrystal/Glycerol Bio-Composite Films

Cellulose nanocrystal/amino-aldehyde biocomposite films

A high toughness elastomer based on naturalEucommia ulmoidesgum

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