Reinforcing polyamide 1212 with graphene oxide via a two-step melt compounding process

Cai, Ziqing; Meng, Xiaoyu; Han, Yingshuai; Ye, Hai‐Mu; Cui, Lishan; Zhou, Qiong

doi:10.1016/j.compositesa.2014.11.011

Cited by 40 publications

(28 citation statements)

References 46 publications

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“…The sharp enhancement in the mechanical properties of the 1 mGO nanocomposite is due to the uniform dispersion of polyethylene-grafted mGO in the HU royalsocietypublishing.org/journal/rsif J. R. Soc. Interface 16: 20180273 blend polymer matrix, as seen in electronic supplementary material, figure S3c; figures 4b and 5b [63]. The uniform dispersion of nanoparticles in 1 mGO shows that the surface modification of GO with mPE leads to better dispersion, less agglomeration and better compatibilization in the matrix.…”

Section: Dispersion Of Graphene Oxide/modified Graphene Oxide Nanofilmentioning

confidence: 93%

HDPE/UHMWPE hybrid nanocomposites with surface functionalized graphene oxide towards improved strength and cytocompatibility

Bhusari

Bose

Basu

2019

J. R. Soc. Interface.

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High-density polyethylene (HDPE)-based and ultra-high molecular weight polyethylene (UHMWPE)-based composites with carbonaceous reinforcements are being widely investigated for biomedical applications. The enhancement of material properties critically depends on the nature, amount and compatibility of the reinforcement with the polymeric matrix. To this end, this study demonstrates the efficacy of a ‘dual’ hybrid approach of incorporating modified inorganic nanofiller into an optimized polyethylene blend. In particular, a unique synthesis strategy was adopted to design a covalently bonded maleated polyethylene (mPE) grafted modified graphene oxide (mGO) hybrid nanocomposite. In this scheme, polyethyleneimine (PEI) was initially attached onto GO to synthesize amine functionalized GO (GO–PEI). This is followed by mPE grafting, resulting in mGO. Melt-extrusion together with injection moulding of a polymer mix (60% HDPE–40% UHMWPE) with different proportions (less than or equal to 3 wt%) of surface functionalized GO was conducted to develop nanocomposites of different sizes and shapes. When compared with unreinforced PE blend, the nanocomposites with 1 wt% mGO exhibited an increase in ultimate tensile strength by 120% (up to 65 MPa) and elastic modulus by 40% (up to 908 MPa). The uniform dispersion of modified GO nanofillers, confirmed using X-ray micro-computed tomography and transmission electron microscopy, facilitated effective interfacial adhesion and compatibility with the hybrid polymer matrix. The variation in mechanical properties with GO/mGO addition to PE blend was critically discussed in reference to the structural modification of GO, crystallinity and nature of dispersion of fillers. Importantly, the nanocomposites support the attachment and proliferation of C2C12 murine myoblast cells over 3 days in culture in a statistically insignificant manner with respect to polymer blends without any nanofiller. Taken together, the experimental results suggest that HDPE/UHMWPE/mGO is a promising biomaterial for bone tissue engineering applications.

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Section: Dispersion Of Graphene Oxide/modified Graphene Oxide Nanofilmentioning

confidence: 93%

HDPE/UHMWPE hybrid nanocomposites with surface functionalized graphene oxide towards improved strength and cytocompatibility

Bhusari

Bose

Basu

2019

J. R. Soc. Interface.

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“…The presence of these groups makes GO attractive to be used as reinforcing filler in polymer composites, particularly when the polymer matrix also has polar groups, capable of forming hydrogen bondings with the groups introduced to the GO structure. In this context, melt-compounded polyamide 1212/GO (Cai et al, 2015) materials and epoxy resin/GO nanocomposites (Li et al, 2013) were obtained.…”

Section: Introductionmentioning

confidence: 99%

Characterization of glycerol-plasticized starch and graphene oxide extruded hybrids

Ferreira

Andrade

2015

Industrial Crops and Products

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“…On the other hand, despite reporting good interfacial interactions and good results that agree with HT predictions (i.e., uniform dispersion and parallel filler alignment), the t/T:V f ratio of graphene oxide (GO)–PA1212 is poor at ~0.3, when assuming parallel filler alignment in the modified RoM, for 0.7%·w/w filled composites. While a significant level of reinforcement was achieved, the filler–matrix interface may not be as good as otherwise indicated.…”

Section: Resultsmentioning

confidence: 89%

“…The robustness of this approach was investigated by applying it against other studies on graphene–polyamide composites in the literature where E c had exceeded HT predictions . The results are presented in Table .…”

Section: Resultsmentioning

confidence: 99%

Low‐defect graphene–polyamide‐6 composites and modeling the filler–matrix interface

Lee

Czajka

Shanks

et al. 2019

J of Applied Polymer Sci

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Low‐defect graphene (G) was prepared via the thermal reduction of expanded graphite in a carbon monoxide environment. G exfoliated and suspended in p‐xylene was compounded in polyamide‐6 (PA6) with filler content ranging from 0.1 to 6%·w/w. Interactions between G and PA6 were characterized via Fourier‐transform infrared spectroscopy (FTIR), differential scanning calorimetry (DSC), and scanning electron microscopy (SEM). Elastic modulus (E) had increased with increasing G content, and had exceeded idealized Halpin–Tsai predictions at 0.1–1.0%·w/w G content, indicating good dispersion and filler–matrix interactions. However, further analysis with a modified rule‐of‐mixtures (RoM) mathematical model indicate that the quality of filler–matrix interface had been suboptimal and had deteriorated drastically with increasing G content. The evaluation of interface quality is in agreement with observed changes in thermal behavior trends. The modified RoM can be applied as a useful tool toward interpreting the mechanical properties of graphene‐reinforced composites. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48630.

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Reinforcing polyamide 1212 with graphene oxide via a two-step melt compounding process

Cited by 40 publications

References 46 publications

HDPE/UHMWPE hybrid nanocomposites with surface functionalized graphene oxide towards improved strength and cytocompatibility

HDPE/UHMWPE hybrid nanocomposites with surface functionalized graphene oxide towards improved strength and cytocompatibility

Characterization of glycerol-plasticized starch and graphene oxide extruded hybrids

Low‐defect graphene–polyamide‐6 composites and modeling the filler–matrix interface

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