Distribution and alignment of carbon nanotubes and nanofibrils in a polymer matrix

Cooper, C. A.; Ravich, Diana; Lips, David; Mayer, Joerg; Wagner, H. Daniel

doi:10.1016/s0266-3538(02)00056-8

Cited by 380 publications

(184 citation statements)

References 15 publications

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“…To achieve this, it is important to easily process and control the nano-network formation to manufacture composites with one or several preferential orientation (s) controlled by a relatively simple process. Some studies have been conducted on the orientation of nanoparticles in a matrix using different techniques such as infiltration [31], shear force [32], mechanical stretching [33], electrospinning [34], in-situ polymerisation, or by use of a magnetic or electric field [35]. Figure 1 shows the different steps of the manufacture of GNP/epoxy composites.…”

Section: Fabrication Challengesmentioning

confidence: 99%

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

Poutrel

Wang

et al. 2016

Appl Compos Mater

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Graphene nanoplatelet (GNP) modified epoxy nanocomposites are becoming attractive to aerospace due to possible improvements in their mechanical, electrical and thermal properties at no weight cost. The process of obtaining reliable material systems provides many challenges, especially at larger scale (a volume effect). This paper reports on the main fabrication stages of GNP-based epoxy composites, namely (i) pre-dispersion, (ii) dispersion, and (iii) post-dispersion. Each stage is developed to show the interest and potential it delivers for property enhancement. Chemical modification of GNP is presented; functionalisation by Triton X-100 shows elastic modulus improvements of the epoxy at low particle content (≤3%). The post-dispersion step as an alignment of GNP into the epoxy by an electrical field is discussed. The electrical conductivity is below the simulated percolation threshold and an improvement of the thermal diffusivity of 220% when compared to non-oriented GNP epoxy sample is achieved. The work demonstrates how the addition of functionalised graphene platelets to an epoxy resin will allow it to act as electrical and thermal conductor rather than as insulator

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Section: Fabrication Challengesmentioning

confidence: 99%

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

Poutrel

Wang

et al. 2016

Appl Compos Mater

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“…However, the reported results about these properties are scattered and still far from satisfactory. Analyses of these research results show that the performance of these composites depends on many factors, such as the types of CNTs (SWNTs or MWNTs) and their morphology and structure (diameter, length and chirality, for example) [34], the processing method, the choice of matrix [34,35], the CNT dispersion within matrix [36], the interfacial interaction between CNTs and matrix, and so on. In this article, we will present a comprehensive review about the preparation and processing, the properties and application of CNT/polymer composites.…”

Section: Introductionmentioning

confidence: 99%

The present status and key problems of carbon nanotube based polymer composites

Du¹,

Bai²,

Cheng³

2007

Express Polym. Lett.

419

250

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Abstract. The state-of-art and key problems of carbon nanotube (CNT) based polymer composites (CNT/polymer composites) including CNT/polymer structural composites and CNT/polymer functional composites are reviewed. Based on the results reported up to now, CNTs can be an effective reinforcement for polymer matrices, and the tensile strength and elastic modulus of CNT/polymer composites can reach as high as 3600 MPa and 80 GPa, respectively. CNT/polymer composites are also promising functional composite materials with improved electrical and thermal conductivity, etc. Due to their multi-functional properties, CNT/polymer composites are expected to be used as low weight structural materials, optical devices, thermal interface materials, electric components, electromagnetic absorption materials, etc. However, the full potential of CNT/polymer composites still remains to be realized. A few key problems, such as how to prepare structurecontrollable CNTs with high purity and consistently dependable high performance, how to break up entangled or bundled CNTs and then uniformly disperse and align them within a polymer matrix, how to improve the load transfer from matrix to CNT reinforcement, etc, still exist and need to be solved in order to realize the wide applications of these advanced composites.

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“…Furthermore, it has been found that the size and dispersion characteristics of inorganic particles have a great effect on the comprehensive properties of polymer composites [4][5][6]. These findings reflect that the application of nano-size fillers is a promising method for property modification of polymer materials.…”

Section: Introductionmentioning

confidence: 88%

The Effect Zeolite Addition in Natural Rubber Polypropylene Composite on Mechanical, Structure, and Thermal Characteristics

Bukit¹,

Frida²

2014

MST

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This study was conducted to determine the effect of zeolite as filler on mechanical properties, and thermal structure blends of natural rubber and polypropylene (NR/PP). In this study, NR/PP/PP-g-MA blends was filled uncalcined zeolite and calcined zeolite at different weight percent of the 2, 4, and 6%. Samples were characterized to determine the tensile strength, fracture elongation and Young's modulus. Structure of the samples was investigated using XRD method and thermal characteristics were analyzed using DTA/TGA technique. The results obtained for tensile strength showed a significant influence with the addition zeolite of the NR/PP blends at 2% by weight of the composition (8 MPa) and decreased with increasing zeolite composition uncalcined zeolite or calcined zeolite. At 2% to 6% by weight of an increase in Young's modulus, for which uncalcined zeolite function more effectively than the calcined zeolite. On the other hand, the addition of uncalcined zeolite and calcined zeolite did not result in decreased fracture elongation. The XRD analysis zeolite indicate the existence of amorphous phase and crystalline mineral type mordenite (CaAl 2 Si 10 O 24 .7 H 2 O). In general, cristality of samples filled with calcined zeolite slightly higher than the uncalcined zeolite at the same amount and intercalation occurs between the zeolite matrix NR/PP. Thermal analysis showed that the samples are filled with calcined zeolite has a thermal resistance higher than the uncalcined zeolite, the melting point NR/PP 165.0 °C with the addition of 6 wt% zeolite melting point to 186.7 °C. AbstrakPengaruh Penambahan Zeolit pada Komposit Karet Alam Polipropilena terhadap Sifat Mekanik, Struktur dan Termal. Penelitian ini dilakukan untuk mengetahui pengaruh zeolit sebagai bahan pengisi terhadap sifat mekanik, struktur dan termal dari campuran karet alam dan polypropylene (NR/PP). Dalam penelitian ini, campuran NR/PP/PP-g-MA diisi dengan zeolit tanpa kalsinasi dan zeolit kalsinasi pada persen berat yang berbeda yakni 2, 4, dan 6%. Sampel dikarakterisasi untuk menentukan kekuatan tarik, perpanjangan putus dan modulus Young. Struktur sampel diteliti menggunakan metode XRD dan karakteristik termal dianalisis dengan menggunakan DTA/TGA. Hasil yang diperoleh untuk kekuatan tarik menunjukkan adanya pengaruh yang signifikan dengan penambahan zeolit pada campuran NR/PP pada komposisi 2% berat (8 MPa) dan terjadi penurunan dengan bertambahnya komposisi zeolit baik kalsinasi maupun tanpa kalsinasi. Pada 2% sampai 6% berat modulus Young terjadi peningkatan, untuk zeolit yang tidak dikalsinasi berfungsi lebih efektif dibandingkan dengan zeolit kalsinasi. Di sisi lain, penambahan zeolit kalsinasi dan tidak dikalsinasi menghasilkan penurunan perpanjangan putus. Analisis XRD dari zeolit menunjukkan adanya fase amorf dan kristal tipe mineral mordenite (CaAl 2 Si 10 O 24 .7 H 2 O). Secara umum, kristalitas dari sampel yang diisi dengan zeolit kalsinasi sedikit lebih tinggi dari pada zeolit tanpa kalsinasi pada jumlah yang sama dan terjadi ...

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Distribution and alignment of carbon nanotubes and nanofibrils in a polymer matrix

Cited by 380 publications

References 15 publications

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

Effect of pre and Post-Dispersion on Electro-Thermo-Mechanical Properties of a Graphene Enhanced Epoxy

The present status and key problems of carbon nanotube based polymer composites

The Effect Zeolite Addition in Natural Rubber Polypropylene Composite on Mechanical, Structure, and Thermal Characteristics

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