Properties enhancement of cassava starch based bioplastics with addition of graphene oxide

Amri, Amun; Ekawati, L; Herman, Syamsu; Yenti, Silvia Reni; Zultiniar,; Aziz, Yelmida; Utami, Syelvia Putri; Bahruddin,

doi:10.1088/1757-899x/345/1/012025

Cited by 13 publications

(4 citation statements)

References 8 publications

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“…The mechanical properties of bioplastics have certain disadvantages compared to conventional plastics, but they can be improved. In the development of a cassava flour bioplastic, 3.2 MPa and 748.7 MPa were obtained for tension and modulus of elasticity, with the flour gelatinization [69] and with addition of graphene oxide [70]. It has been proven that the use of TiO2 improves the mechanical strength and elasticity of thermoplastic materials [71].…”

Section: Resultsmentioning

confidence: 99%

Biofilms Production from Avocado Waste

Sánchez

Ponce

Brito

et al. 2021

IyU

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Objective: To obtain biofilms from starch and cellulose present in the avocado (Persea americana) peel and seed. Materials and methods: The starch characterization included humidity, gelatinization temperature, paste clarity, absorption index, solubility index, swelling power, amylose, amylopectin, amount, and starch yield. Five mixtures were made with 3 g of starch, 5 mL of 30 % NaOH (w/v), 3 g of cellulose, and different proportions for glycerin: 2 g; 2.5 g; 3 g; 3.5 g; 4 g, and PVA: 2 g, 3 g, 4 g, 5 g, and 6 g. Films were formed on acrylic plates, using the casting method. The bioplastic was characterized in terms of moisture, solubility in water, density, thickness, biodegradability, stress, deformation, and modulus of elasticity. Results and discusión: The addition of cellulose to the mixture does not contribute to film formation, unlike PVA which did. The film had the best physical appearance with a mixture of 2 g of glycerin and 6 g of PVA. The bioplastic characterization was 23.43 % humidity, 39.39 % for water solubility, 1.52 g/cm3 density, 0.58 mm thickness, 21.03 % weight loss for the biodegradability test, 1.53 MPa for tension, 21.25 % deformation, and 10,04 MPa for the modulus of elasticity. Conclusions: The bioplastic obtained did not show the resistance of traditional plastic. However, the results obtained serve as a starting point for the realization of other formulations, aimed at producing a bioplastic capable of competing with its synthetic relatives.

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Section: Resultsmentioning

confidence: 99%

Biofilms Production from Avocado Waste

Sánchez

Ponce

Brito

et al. 2021

IyU

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“…On the other hand, authors such as Chegdani et al, [84] studied the tribological properties of polypropylene reinforced with different types of natural fibers (bamboo, sisal and miscanthus), observing a viscoelastic behavior of the fiber that contributed to a deformation on the surface of the material during machining, increasing the surface strength in the contact area. Amri et al, [85] added graphene oxide to a bioplastic based on cassava starch, observing improvements in tensile strength and Young's modulus with increasing graphene oxide concentration, although elongation tended to decrease. Chaka et al, [86] studied the compressive strength of recycled PET reinforced with natural banana and sisal fibers, showing that natural fiber-based composites were 36% lighter than glass-reinforced polymers and showed a maximum compression set of 3.1 MPa, suggesting that the use of natural fibers is a viable and economical alternative for the recycling of plastics such as PET.…”

Section: Mechanical and Physical Properties Of Compositesmentioning

confidence: 99%

Reinforced Polymers with Natural Fiber

Rolon,

Cruz

2024

Preprint

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The interest in obtaining new composite materials with diverse properties has created a growing interest in natural fi-bers as reinforcement in polymers, which has generated an impact in sectors such as automotive and construction, dis-placing synthetic fibers. Properties such as low density, low cost, and rene.wable make these fibers an attractive alterna-tive to reduce environmental impact. Their application in polymers, such as polypropylene, polyethylene, and epoxy resins, has allowed the modification of polymeric composite materials' mechanical and physical properties (NFRP). This review focuses on investigating the status of natural fiber-reinforced polymers. It analyzes their worldwide demand, chemical characteristics, physical and mechanical properties, and various applications in different sectors and indus-tries. In addition, the advantages and disadvantages of NFRPs are highlighted, highlighting their potential for new ap-plications.

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“…The absorption band at 1024 cm -1 is a vibration C-O strain. C-O group indicates the successful oxidation of graphite and indicates that GO has hydrophilic properties (Amri et al, 2018;Cheng et al, 2017;Gaidukevic et al, 2018;Narayanan et al, 2019). Graphite oxide is highly hydrophilic and quickly hydrates when exposed to moisture or immersion in water, resulting in a marked increase in inter-planar distance (up to 1.2 nm in the saturated state).…”

Section: Graphene Oxidementioning

confidence: 99%

Synthesis of Graphene Oxide Enriched Natural Kaolinite Clay and Its Application For Biodiesel Production

Syukri

Fadhil

Rilda

et al. 2020

Int. J. Renew. Energy Dev.

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A heterogeneous catalyst is one type of catalyst which is very effective for biodiesel production; thus, in this study, a novel heterogeneous bifunctional catalyst was prepared by kaolinite clay obtained from Padang of West Sumatera and impregnated with graphene oxide and potassium hydroxide (KOH) for the simultaneous esterification and transesterification reactions of palm oil into biodiesel. For comparison, two other catalysts were also prepared. The first catalyst was the same clay which was heated at 450ºC for 4 hours, and the second catalyst was the same clay which was impregnated with potassium hydroxide (KOH) only. The three catalysts were characterized using X-Ray Fluorescence (XRF), X-Ray Diffraction (XRD), and Fourier Transform Infra-Red (FTIR). XRF analysis showed that the clay sample’s main composition consisted of 54% silica, 35% alumina, and 7% hematite. The XRD analysis results showed that the most dominant crystal composition was quartz, kaolinite, and hematite. The analysis results using FTIR showed a change in intensity and shift in wave numbers indicating a cation exchange. The catalytic activity test was carried out with a ratio of oil and methanol 1:6, catalyst amount 5%, 60ºC reaction temperature, and 4 hours of reaction time.The results showed that the catalytic activity of clays impregnated with graphene oxide and potassium hydroxide was better with a yield of 58% compared to clays without impregnation and other clays that were only impregnated with KOH under the yields of 0.8% and 0.4%, respectively

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Properties enhancement of cassava starch based bioplastics with addition of graphene oxide

Cited by 13 publications

References 8 publications

Biofilms Production from Avocado Waste

Biofilms Production from Avocado Waste

Reinforced Polymers with Natural Fiber

Synthesis of Graphene Oxide Enriched Natural Kaolinite Clay and Its Application For Biodiesel Production

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