Preparation and characterization of polypropylene-graft-thermally reduced graphite oxide with an improved compatibility with polypropylene-based nanocomposite

Hsiao, Min-Chien; Liao, Shu-Hsien; Lin, Yuping; Wang, Chung-An; Pu, Nen-Wen; Tsai, Hung Yin; Chen‐Chi, M.

doi:10.1039/c0nr00981d

Cited by 88 publications

(68 citation statements)

References 51 publications

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“…However, this improvement seems to be limited by the restacking effect of graphene sheets due to the strong van der Waals interactions between them especially when high amounts of graphene are incorporated into non-polar polyolefin matrices [12]. Therefore, it is imperative to enhance the dispersion of graphene sheets in polyolefin matrices to attain better oxygen barrier performance, which is beneficial to improve the thermo-oxidative stability of graphene-based composites.…”

Section: Introductionmentioning

confidence: 99%

The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

Yang

Huang

et al. 2015

Carbon

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Section: Introductionmentioning

confidence: 99%

The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

Yang

Huang

et al. 2015

Carbon

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“…The graphene/PP composites with good filler dispersion can also be prepared through a solution mixing manner [39][40][41]. In most studies, PPgMA was used either as the matrix polymer [24,42] or as the compatibilizer for PP/functionalized graphite oxide (fGO) nanocomposites [39,41]. But the effect of the molecular weight of PPgMA was rarely discussed, and it is apparent that a timely study is needed.…”

mentioning

confidence: 99%

“…An alternative to prepare nanoscale dispersed graphene/PP composites via in-situ Ziegler-Natta polymerization in the presence of graphene supported catalyst has been reported [38], but its industrial application is limited by the requirement of sophisticated polymerization techniques. The graphene/PP composites with good filler dispersion can also be prepared through a solution mixing manner [39][40][41]. In most studies, PPgMA was used either as the matrix polymer [24,42] or as the compatibilizer for PP/functionalized graphite oxide (fGO) nanocomposites [39,41].…”

mentioning

confidence: 99%

Role of surfactant molecular weight on morphology and properties of functionalized graphite oxide filled polypropylene nanocomposites

Wang

Jc²,

Sz³

2014

Express Polym. Lett.

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Conductive polymer composites have aroused wide interests from both academia and industry in the field of functional materials. Addition of diverse conducting fillers such as carbon black [1,2], graphite [3], and metal fiber or powder [4] into thermoplastic polymers through melt mixing is an effective approach to fabricate conductive composites. Because a great amount of the fillers, generally greater than 15 wt% [5], were required for the host polymer to become conductive, resulting in both poor processability and inferior mechanical properties, the practical applications of these conventional composites were largely restricted. On the other hand, commercial exploitation of isotactic polypropylene has been expanded rapidly due to its attractive characters of low cost, low weight, heat distortion above 100°C, and extraordinary versatility in terms of properties, applications and recycling. The introduction of nanoscopic fillers of high anisotropy enhances a wide range of performance of the polypropylene nanocomposites, such as mechanical, thermal and conductive properties, at a relatively small loading [6]. Graphite is a layered mineral composed of weakly bonded graphene sheets with a large aspect ratio. Abstract. Various surfactants of different molecular weights, including alkylamine, poly(oxypropylene) diamine (POP), and maleic anhydride grafted polypropylene (PPgMA) oligomers, were used for simultaneous funtionalization and reduction of graphite oxide (fGO). In this study, the effect of molecular weight and compatibility of the surfactants on the morphology and properties of the nanocomposites are reported. Wide-angle X-ray diffraction (WAXD) exhibited a definite interlayer thickness for GOA (alkylamine intercalated GO), however, the diffraction peaks were nearly suppressed for fGOs combining ODA with either POP (GOAP) or PPgMA (GOAE). The uniform dispersion of the fGO flakes in the polypropylene matrix resulted in the significant increase in both the degradation temperature and the crystallization temperature. A single characteristic melting peak of monoclinic (!) crystalline phase was observed from DSC traces, which was consistent with WAXD results. Dynamic mechanical analysis clearly indicated increase in both the storage modulus and the glass transition temperature of the nanocomposites due to the enhanced affinity between fGO and the polypropylene matrix. However, GOAP composite showed lower E" and T g than GOAE because POP is less compatible with the matrix than PPgMA oligomer. Dielectric analysis also showed significant increase in both dielectric permittivity and dielectric loss at low frequency regimes with GOAE showing maximum dielectric properties. The finely dispersed GOAE and its compatibility with polymer matrix manifested the interfacial polarization, which gave rise to much greater #" and #$ than other nanocomposites.

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“…The authors observed that the PP-g-GO acts as multifunctional filler for PP/PPO blends and it enhances the thermal stability and flame-retardant behavior of PP/ PPO blends. Similarly, Ma et al successfully grafted the PP on the surface of TRG covalently and studied the effect of compatibility and thermal stability of isotactic polypropylene (iPP) matrix with the incorporation of PP-g-TRG [108]. It was observed that the PP-g-TRG acts as a heterogeneous nucleation agent and shows a significant improvement in thermal stability of iPP.…”

Section: Thermal and Flame-retardant Behaviors Of Polyolefin/ Graphenmentioning

confidence: 93%

Polyolefin/Graphene Nanocomposite Materials

Vengatesan¹,

Mittal²

2015

Handbook of Nanoceramic and Nanocomposite Coatings and Materials

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Preparation and characterization of polypropylene-graft-thermally reduced graphite oxide with an improved compatibility with polypropylene-based nanocomposite

Cited by 88 publications

References 51 publications

The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

The synergistic mechanism of thermally reduced graphene oxide and antioxidant in improving the thermo-oxidative stability of polypropylene

Role of surfactant molecular weight on morphology and properties of functionalized graphite oxide filled polypropylene nanocomposites

Polyolefin/Graphene Nanocomposite Materials

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