Enhancing polymer/graphene oxide gas barrier film properties by introducing new crystals

Chen, Jung-Tsai; Fu, Ywu-Jang; An, Quan‐Fu; Lo, Shen–Chuan; Zhong, Yue-Zhe; Hu, Chien‐Chieh; Lee, Kueir‐Rarn; Lai, Juin‐Yih

doi:10.1016/j.carbon.2014.04.024

Cited by 82 publications

(41 citation statements)

References 40 publications

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“…These results demonstrate that semi-crystalline characteristic of Pebax polymer was not disturbed by GO nanosheets. Chen et al, obtained similar results for mixed matrix membranes based on poly (vinyl alcohol) and GO [25]. The characteristic peaks of GO have been shown earlier at 2θ = 11° [26].…”

Section: Instrumental Characterizations Of the Membranesmentioning

confidence: 57%

Pebax®1657/Graphene oxide composite membranes for improved water vapor separation

Akhtar

Kumar

Peinemann

2017

Journal of Membrane Science

104

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In this study composite mixed matrix membranes containing hydrophilic microphaseseparated block copolymer (Pebax ® 1657) and graphene oxide nanosheets were prepared using a dip coating method. Water vapor and N 2 gas permeation were measured as a function of different parameters: (i) layer thickness, (ii) content of graphene oxide (GO), and (iii) content of reduced GO. Surprisingly, a concentration of only 2 wt% of GO nanosheets well dispersed in the Pebax layer boosted the selectivity 8 times by decreasing the water vapor permeance by only 12 % whereas N 2 gas permeance decreased by 70 %. Using reduced GO instead, the water vapor permeance declined by up to 16% with no influence on the N 2 gas permeance. We correlated the permeation properties of the mixed matrix membranes with different models and found, that both the modified Nielsen model and the Cussler model give good correlation with experimental findings.

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Section: Instrumental Characterizations Of the Membranesmentioning

confidence: 57%

Pebax®1657/Graphene oxide composite membranes for improved water vapor separation

Akhtar

Kumar

Peinemann

2017

Journal of Membrane Science

104

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“…Formation of gas barrier film of PVA/graphene oxide with hybrid structure. 146 Liu et al presented a facile approach for the simultaneous in situ reduction of graphene oxide, its surface modification and preparation of polyethylenimine (PEI)/RGO nanocomposites with improved gas barrier properties (see Figure 9). PEI was employed both as reducing agent and surface modifier for the preparation of water dispersible graphene as well as a polymer matrix to obtain PEI/RGO composite for the gas barrier application.…”

Section: Barrier Properties Of Graphene/polymer Nanocompositesmentioning

confidence: 99%

Gas barrier performance of graphene/polymer nanocomposites

Cui¹,

Kundalwal

Kumar

2016

Carbon

563

330

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Abstract:Due to its exceptionally outstanding electrical, mechanical and thermal properties, graphene is being explored for a wide array of applications and has attracted enormous academic and industrial interest.Graphene and its derivatives have also been considered as promising nanoscale fillers in gas barrier application of polymer nanocomposites (PNCs). In this review, recent research and development of the utilization of graphene and its derivatives in the fabrication of nanocomposites with different polymer matrices for barrier application are explored. Most synthesis methods of graphene-based PNCs are covered, including solution and melt mixing, in situ polymerization and layer-by-layer process.Graphene layers in polymer matrix are able to produce a tortuous path which works as a barrier structure for gases. A high tortuosity leads to higher barrier properties and lower permeability of PNCs. The influence of the intrinsic properties of these fillers (graphene and its derivatives) and their state of dispersion in polymer matrix on the gas barrier properties of graphene/PNCs are discussed. Analytical modeling aspects of barrier performance of graphene/PNCs are also reviewed in detail. We also discuss and address some of the work on mixed matrix membranes for gas separation.

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“…[19][20][21][22] This approach has some advantages: it does not require uniform processing and dispersion of the graphene into the polymer matrix; it does not modify the mechanical properties of the polymer, and it can be used also to form multilayered structures. As example, Hurt and coworkers demonstrated that this approach improves the barrier properties toward mercury vapors in bilayers of GO with poly(ethylene terephthalate) (PET).…”

Section: Introductionmentioning

confidence: 99%