Enhanced UV blocking, tensile and thermal properties of bendable TEMPO-oxidized bacterial cellulose powder-based films immersed in PVA/Uncaria gambir/ZnO solution

Rahmadiawan, Dieter; Abral, Hairul; Ilham, Mohammad Khalid; Puspitasari, Poppy; Nabawi, Rahmat Azis; Shi, Shih-Chen; Sugiarti, Eni; Muslimin, Ahmad Novi; Chandra, Devi; Ilyas, R.A.; Zainul, Rahadian

doi:10.1016/j.jmrt.2023.08.267

Cited by 16 publications

(7 citation statements)

References 55 publications

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“…In the previous work, Uncaria gambir extract (UGE), which has about 50% tannic, was found to provide a more stable CoF profile compared to those without UGE 18 , 39 , 40 . Another recent work also reported that adding TA improved or reduced the CoF 41 , 42 .…”

Section: Resultsmentioning

confidence: 97%

Enhanced Stability, Superior Anti-Corrosive, and Tribological Performance of Al2O3 Water-based Nanofluid Lubricants with Tannic Acid and Carboxymethyl Cellulose over SDBS as Surfactant

Rahmadiawan,

Shi

2024

Sci Rep

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In this research work, the stability, tribological, and corrosion properties of a water-based Al2O3 nanofluid (0.5 wt%) formulated with tannin acid (TA) and carboxymethyl cellulose (CMC) as dispersants or surfactants were investigated. For comparative purposes, sodium dodecylbenzene sulfonate (SDBS) was also incorporated. The stability of the nanofluid was assessed through zeta potential measurements and photo-capturing, revealing the effectiveness of TA and CMC in preventing nanoparticle agglomeration. Tribological properties were examined using a pin-on-disk apparatus, highlighting the tribofilm of Al2O3 that enhanced lubricating properties of the nanofluid by the SEM, resulting in reduced friction and wear of the contacting surfaces. Sample with the addition of both TA and CMC exhibited the best tribological performance, with a ~ 20% reduction in the friction coefficient and a 59% improvement in wear rate compared to neat nanofluid without TA and CMC. Additionally, the corrosion resistance of the nanofluids were evaluated via weight loss and electrochemical impedance spectroscopy. The nanofluid sample containing both TA and CMC exhibited the lowest corrosion rate, with 97.6% improvement compared to sample without them. This study provides valuable insights into the potential applications of TA and CMC-based Al2O3 nanofluids as effective and environmentally friendly solutions for coolant or lubrication in cutting processes.

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Section: Resultsmentioning

confidence: 97%

Enhanced Stability, Superior Anti-Corrosive, and Tribological Performance of Al2O3 Water-based Nanofluid Lubricants with Tannic Acid and Carboxymethyl Cellulose over SDBS as Surfactant

Rahmadiawan,

Shi

2024

Sci Rep

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“…Furthermore, the cellulose was dissolved in 6% NaOH and shaken at a speed of 150 rpm at 25 o C for 3 h to obtain cellulose xanthate. Cellulose xanthate was characterized using FTIR (Varian Scimitar 1000) [25,26].…”

Section: Preparation Of Cellulose Xanthatementioning

confidence: 99%

Untitled

2024

J. Med. Chem. Sci.

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“…A polymer blend and composite system represent a straightforward and efficient approach to achieving desired material properties. To enhance the ductility, reduce costs, and accelerate the degradation rate of PLA, various low-cost additives have been proposed, including calcium carbonate [ 10 ], biochar [ 11 ], wood powder [ 12 ], natural fiber [ 13 , 14 ], nanoparticles [ 15 , 16 ], phenolic compound [ 16 ], vegetable oils [ 17 ], and other biopolymers like natural rubber [ 18 , 19 ] and starch-based plastic [ 20 , 21 ]. Thermoplastic starch, owing to its low cost, renewability, biodegradability, ease of handling, and availability, has emerged as a promising candidate to complement PLA’s limitations [ 22 ].…”

Section: Introductionmentioning

confidence: 99%

Sustainable Materials with Improved Biodegradability and Toughness from Blends of Poly(Lactic Acid), Pineapple Stem Starch and Modified Natural Rubber

Tessanan,

Phinyocheep,

Amornsakchai

2024

Polymers

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Poly(lactic acid) (PLA), derived from renewable resources, plays a significant role in the global biodegradable plastic market. However, its widespread adoption faces challenges, including high brittleness, hydrophobicity, limited biodegradability, and higher costs compared to traditional petroleum-based plastics. This study addresses these challenges by incorporating thermoplastic pineapple stem starch (TPSS) and modified natural rubber (MNR) into PLA blends. TPSS, derived from pineapple stem waste, is employed to enhance hydrophilicity, biodegradability, and reduce costs. While the addition of TPSS (10 to 40 wt.%) marginally lowered mechanical properties due to poor interfacial interaction with PLA, the inclusion of MNR (1 to 10 wt.%) in the PLA/20TPSS blend significantly improved stretchability and impact strength, resulting in suitable modulus (1.3 to 1.7 GPa) and mechanical strength (32 to 52 MPa) for diverse applications. The presence of 7 wt.% MNR increased impact strength by 90% compared to neat PLA. The ternary blend exhibited a heterogeneous morphology with enhanced interfacial adhesion, confirmed by microfibrils and a rough texture on the fracture surface. Additionally, a downward shift in PLA’s glass transition temperature (Tg) by 5–6 °C indicated improved compatibility between components. Remarkably, the PLA ternary blends demonstrated superior water resistance and proper biodegradability compared to binary blends. These findings highlight the potential of bio-based plastics, such as PLA blends with TPSS and MNR, to contribute to sustainable economic models and reduce environmental impact for using in plastic packaging applications.

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Enhanced UV blocking, tensile and thermal properties of bendable TEMPO-oxidized bacterial cellulose powder-based films immersed in PVA/Uncaria gambir/ZnO solution

Cited by 16 publications

References 55 publications

Enhanced Stability, Superior Anti-Corrosive, and Tribological Performance of Al2O3 Water-based Nanofluid Lubricants with Tannic Acid and Carboxymethyl Cellulose over SDBS as Surfactant

Enhanced Stability, Superior Anti-Corrosive, and Tribological Performance of Al2O3 Water-based Nanofluid Lubricants with Tannic Acid and Carboxymethyl Cellulose over SDBS as Surfactant

Untitled

Sustainable Materials with Improved Biodegradability and Toughness from Blends of Poly(Lactic Acid), Pineapple Stem Starch and Modified Natural Rubber

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