Preparation and characterization of starch-based composite films reinforced by cellulose nanofibers

Zinc oxide (ZnO)/cellulose nanofiber (CNF) nanocomposite films were prepared using cellulose nanofibers and ZnO nanoparticles. First, suspensions of CNF and ZnO mixtures were blended with different CNF/ZnO ratios; then, the mixtures were stirred, homogenized, filtered, and hot pressed to form nanofilms with various ZnO weight ratios (0–50 wt%). Rheological tests showed that the CNF shear thinning behavior was not affected by the addition of ZnO. X-ray diffraction and scanning electron microscopy studies proved the existence of ZnO nanoparticles in the nanocomposite films. Thermogravimetric results indicated that the presence of ZnO had almost no effect on the thermal properties of the composite. As the ZnO content increased, the tensile strength and strain-to-failure rate decreased. In comparison with neat CNF nanofilms, the nanocomposite films showed greater antimicrobial ability against Gram-positive Staphylococcus aureus due to the presence of ZnO nanoparticles, allowing the CNF/ZnO films to be used in some targeted biomedical applications.

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Characterization of conductive composite films based on TEMPO-oxidized cellulose nanofibers and polypyrrole

Journal of Materials Science ◽

10.1007/s10853-011-6226-9 ◽

2012 ◽

Vol 47 (8) ◽

pp. 3752-3762 ◽

Cited By ~ 36

Author(s):

Khalil Jradi ◽

Benoit Bideau ◽

Bruno Chabot ◽

Claude Daneault

Keyword(s):

Cellulose Nanofibers ◽

Composite Films ◽

Oxidized Cellulose ◽

Conductive Composite

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Characterization of Rockfish Skin Gelatin Composite Films

Journal of the Korean Society of Food Science and Nutrition ◽

10.3746/jkfn.2017.46.3.394 ◽

2017 ◽

Vol 46 (3) ◽

pp. 394-399 ◽

Cited By ~ 1

Author(s):

Song-Ee Beak ◽

Hyeri Kim ◽

Kyung Bin Song

Keyword(s):

Composite Films

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Preparation and characterization of the acrylic latex-laminating adhesives applied in BOPP/PE composite films

Polymer Bulletin ◽

10.1007/s00289-018-2588-3 ◽

2018 ◽

Vol 76 (9) ◽

pp. 4469-4483

Author(s):

Liang Jiang ◽

Bo Wu ◽

Yuan Lei ◽

Yuanyuan Jiang ◽

Jingxin Lei

Keyword(s):

Composite Films ◽

Acrylic Latex

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Characterization of polyvinyl alcohol/starch composite films incorporated with p-coumaric acid modified chitosan and chitosan nanoparticles: A comparative study

Carbohydrate Polymers ◽

10.1016/j.carbpol.2021.117930 ◽

2021 ◽

Vol 262 ◽

pp. 117930

Author(s):

Shaoxiang Lee ◽

Meng Zhang ◽

Guohui Wang ◽

Wenqiao Meng ◽

Xin Zhang ◽

...

Keyword(s):

Polyvinyl Alcohol ◽

Comparative Study ◽

Chitosan Nanoparticles ◽

Composite Films ◽

Coumaric Acid ◽

Modified Chitosan

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Facile Synthesis and Characterization of Palm CNF-ZnO Nanocomposites with Antibacterial and Reinforcing Properties

International Journal of Molecular Sciences ◽

10.3390/ijms22115781 ◽

2021 ◽

Vol 22 (11) ◽

pp. 5781

Author(s):

Janarthanan Supramaniam ◽

Darren Yi Sern Low ◽

See Kiat Wong ◽

Loh Teng Hern Tan ◽

Bey Fen Leo ◽

...

Keyword(s):

Plant Biomass ◽

Cellulose Nanofibers ◽

High Strength ◽

Salmonella Typhi ◽

Particle Sizes ◽

Mechanical Reinforcement ◽

Uniform Size ◽

Preparation Methods ◽

Potential Applications

Cellulose nanofibers (CNF) isolated from plant biomass have attracted considerable interests in polymer engineering. The limitations associated with CNF-based nanocomposites are often linked to the time-consuming preparation methods and lack of desired surface functionalities. Herein, we demonstrate the feasibility of preparing a multifunctional CNF-zinc oxide (CNF-ZnO) nanocomposite with dual antibacterial and reinforcing properties via a facile and efficient ultrasound route. We characterized and examined the antibacterial and mechanical reinforcement performances of our ultrasonically induced nanocomposite. Based on our electron microscopy analyses, the ZnO deposited onto the nanofibrous network had a flake-like morphology with particle sizes ranging between 21 to 34 nm. pH levels between 8–10 led to the formation of ultrafine ZnO particles with a uniform size distribution. The resultant CNF-ZnO composite showed improved thermal stability compared to pure CNF. The composite showed potent inhibitory activities against Gram-positive (methicillin-resistant Staphylococcus aureus (MRSA)) and Gram-negative Salmonella typhi (S. typhi) bacteria. A CNF-ZnO-reinforced natural rubber (NR/CNF-ZnO) composite film, which was produced via latex mixing and casting methods, exhibited up to 42% improvement in tensile strength compared with the neat NR. The findings of this study suggest that ultrasonically-synthesized palm CNF-ZnO nanocomposites could find potential applications in the biomedical field and in the development of high strength rubber composites.

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