Comparison of Properties of PVA Nanocomposites Containing Reduced Graphene Oxide and Functionalized Graphene

Park, Gi Tae; Chang, Jin‐Hae

doi:10.3390/polym11030450

Cited by 25 publications

(6 citation statements)

References 49 publications

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“…Enhancements in the performance of the final nanocomposites depends largely on the morphological aspects of these fillers, such as their sizes and shapes. Among the nanofillers, two-dimensional (2D) nanofillers, including layered silicate, layered double hydroxide (LDH), boron nitride (BN), graphene and graphene oxide (GO), have attracted extensive interest due to the high aspect ratio [4,5,6,7,8,9,10,11,12,13]. Compared to the bulk polymers, the polymer nanocomposites filled with 2D nanofillers usually exhibit dramatically different or superior overall performance.…”

Section: Introductionmentioning

confidence: 99%

Structure and Mechanical Performance of Poly(vinyl Alcohol) Nanocomposite by Incorporating Graphitic Carbon Nitride Nanosheets

Wang

et al. 2019

Polymers

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Owing to the high aspect ratio, the two-dimensional (2D) inorganic nanofillers have attracted extensive interest in the field of polymer reinforcement. In this work, graphitic carbon nitride (g-C3N4) nanosheets were obtained via thermal condensation of melamine and were then ultrasonically exfoliated in water, which was confirmed by atomic force microscopy (AFM) and TEM. Poly(vinyl alcohol) (PVA)/g-C3N4 nanocomposites were achieved by solution casting using water as the solvent. The structure and mechanical performance of PVA/g-C3N4 nanocomposites were studied. It was found that the g-C3N4 nanosheets were well dispersed in the PVA matrix. The introduction of g-C3N4 nanosheets increased the glass transition temperature and crystallinity of the nanocomposites, leading to the improved mechanical performance. Compared with the pure PVA, the PVA/g-C3N4 nanocomposite with 0.50 wt% g-C3N4 nanosheets showed ~70.7% enhancement in tensile strength, up from 51.2 MPa to 87.4 MPa.

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Section: Introductionmentioning

confidence: 99%

Structure and Mechanical Performance of Poly(vinyl Alcohol) Nanocomposite by Incorporating Graphitic Carbon Nitride Nanosheets

Wang

et al. 2019

Polymers

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“…Third, the ink solidification time after the extrusion is important because of the trade‐off relations between layer adhesion and printing resolution. [ 13 ] Figure 2c shows that both the pure PVBVA and PVBVA/graphene inks exhibit shear‐rate‐dependent viscosity behaviors (shear thinning). However, the viscosity of the PVBVA/graphene ink is relatively higher than that of the PVBVA ink owing to its faster gelation, resulting in more spatially precise 3D patterns.…”

Section: Resultsmentioning

confidence: 99%

Ecofriendly Polymer–Graphene‐Based Conductive Ink for Multifunctional Printed Electronics

Joshi

Kumar

Kim

2023

Adv Materials Technologies

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The ongoing research on printed and flexible electronics is primarily focused on conductive three‐dimensional (3D) print patterning. However, due to the nonhomogeneous distribution of conductive elements in a polymer matrix and their tendency to shrink, 3D‐printed patterns often suffer from low‐printing accuracies and poor mechanical and electrical properties. Herein, poly(vinyl butyral‐co‐vinyl alcohol‐co‐vinyl acetate) (PVBVA) is reinforced with microwave‐exfoliated graphene to develop a conductive ink for 3D printing. Compared with the pure PVBVA patterns, the PVBVA/graphene patterns exhibit a high‐electrical conductivity, a twofold enhancement in tensile strength, an improved printing accuracy, and a high stability because of the graphene addition. The PVBVA/graphene inks flow well during the printing; loading of up to 0.1 wt% graphene in the PVBVA gel results in notable changes in the rheological properties of the ink. The printed conductive patterns show a high flexibility suitable for wearable electronics. Additionally, multifunctional electronic operations such as photoinduced heating, temperature sensing, and motion sensing are possible. This study may pave the way for the development of a new class of smart wearable electronics for healthcare and soft robotics.

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“…As displayed in Table 3 , up to a TrGO concentration of 1.5 wt.%, the degradation temperature at the weight loss of 5% increased gradually ( Figure 6 b) from 135 ℃ to 219 ℃. This indicated that the high heat resistance of TrGO contributes significantly to the thermal stability of PVA films [ 50 ]. However, for the TrGO-2 wt.% sample, it decreased to 215 ℃, which could be due to the high amount of TrGO in the PVA matrix causing agglomeration of the TrGO sheets, and thus, a decrease in heat resistance.…”

Section: Resultsmentioning

confidence: 99%

Enhanced Mechanical and Antibacterial Properties of Nanocomposites Based on Poly(vinyl Alcohol) and Biopolymer-Derived Reduced Graphene Oxide

et al. 2021

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Functionalized graphene–polymer nanocomposites have gained significant attention for their enhanced mechanical, thermal, and antibacterial properties, but the requirement of multi-step processes or hazardous reducing agents to functionalize graphene limits their current applications. Here, we present a single-step synthesis of thermally reduced graphene oxide (TrGO) based on shellac, which is a low-cost biopolymer that can be employed to produce poly(vinyl alcohol) (PVA)/TrGO nanocomposites (PVA–TrGO). The concentration of TrGO varied from 0.1 to 2.0 wt.%, and the critical concentration of homogeneous TrGO dispersion was observed to be 1.5 wt.%, below which strong interfacial molecular interactions between the TrGO and the PVA matrix resulted in improved thermal and mechanical properties. At 1.5 wt.% filler loading, the tensile strength and modulus of the PVA–TrGO nanocomposite were increased by 98.7% and 97.4%, respectively, while the storage modulus was increased by 69%. Furthermore, the nanocomposite was 96% more effective in preventing bacterial colonization relative to the neat PVA matrix. The present findings indicate that TrGO can be considered a promising material for potential applications in biomedical devices.

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Comparison of Properties of PVA Nanocomposites Containing Reduced Graphene Oxide and Functionalized Graphene

Cited by 25 publications

References 49 publications

Structure and Mechanical Performance of Poly(vinyl Alcohol) Nanocomposite by Incorporating Graphitic Carbon Nitride Nanosheets

Structure and Mechanical Performance of Poly(vinyl Alcohol) Nanocomposite by Incorporating Graphitic Carbon Nitride Nanosheets

Ecofriendly Polymer–Graphene‐Based Conductive Ink for Multifunctional Printed Electronics

Enhanced Mechanical and Antibacterial Properties of Nanocomposites Based on Poly(vinyl Alcohol) and Biopolymer-Derived Reduced Graphene Oxide

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