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CNT Based and Graphene Based Polymer Nanocomposites for Radar Absorbing Applications

材料科学与工程（中英文B版） 2012年第6期2卷 368-375页

作者： chapal kumar das Chakkirala Venkata Sudhakar Materials Science Centre Indian Institute of Technology Kharagpur West Bengal 721302 India

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Synthesis and Characterisations of TiO<sub>2</sub>Coated Multiwalled Carbon Nanotubes/Graphene/Polyaniline Nanocomposite for Supercapacitor Applications

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Open Journal of Applied Sciences 2012年第2期2卷 70-77页

作者： Debasis Ghosh Soumen Giri Swinderjeetsingh Kalra chapal kumar das Department of Chemistry Dayanand Anglo-Vedic (D.A.-V.) College Kanpur India Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India

Nowadays with ever increasing demand of energy, developing of alternative power sources is an important issue all over the world. In this respect we have prepared nanocomposites based on metal oxide (titanium oxide) coated multiwalled carbon nanotubes (MWCNTs)/polyaniline (PANI) with graphene and without graphene and studied their electrochemical performance. The formation of the polymer in the nanocomposites was confirmed by the Fourier Transform Infrared Spectroscopy (FTIR) study. The morphological characterisations were carried out by the Field Emission Scanning Electron Microscopy (FESEM) and Transmission Electron Microscopy (TEM). To characterize the prepared nanocomposites electrode, a cyclic voltammetry test for measuring specific capacitance, and an impedance test were conducted. The highest value of specific capacitance obtained for the TiO2 coated MWCNTs/PANI nanocomposite was 443.57 F/g at 2 mV/s scan rate. Upon addition of graphene nanosheet to the TiO2 coated MWCNTs in a weight ratio of (9:1) the specific capacitance value increased to 666.3 F/g at the same scan rate, also resulting in an increase in energy density and power density.

关键词： Supercapacitors Polyaniline Nanocomposites Graphene Nanosheet

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Mechanical and Crystalline Behavior of Polymeric Nanocomposites in Presence of Natural Clay

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Open Journal of Applied Sciences 2012年第4期2卷 277-282页

作者： Parthajit Pal Mrinal Kanti Kundu Swinderjeetsingh Kalra chapal kumar das Department of Chemistry Dayanand Anglo-Vedic (D. A.-V.) College Kanpur India Materials Science Centre Indian Institute of Technology Kharagpur Kharagpur India

Fabrication of nanocomposites from immiscible polymer blend system has been represented in this work. A new type of natural clay named Halloysite nanotubes (HNTs) are modified by Polyethyleneimine (PEI) and these PEI grafted HNTs are incorporated into the immiscible blend system during melt mixing process to prepare halloysite based nanocomposites. Fourier Transform Infrared Spectroscopy (FTIR) study confirms the formation of PEI grafted HNTs. The nanocomposites are characterized by SEM for morphological study and, the dispersion manners of nanoclays by Transmission Electron Microscopy (TEM). Storage modulus is studied by Dynamic mechanical thermal analysis (DMTA) instrument. The tensile measurement explored better tensile property of nanocomposites as compared to the virgin blend. XRD is performed to determine the crystalline behavior of the nanocomposites as well as for blend. The above investigations reveal that the HNTs act as reinforcing as well as nucleating agent in the blend system.

关键词： Nanocomposite Mechanical Crystallinity Halloysite Polyethyleneimine

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One Pot Synthesis of Graphene by Exfoliation of Graphite in ODCB

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Graphene 2013年第1期2卷 42-48页

作者： Sumanta Sahoo Goutam Hatui Pallab Bhattacharya Saptarshi Dhibar chapal kumar das Materials Science Centre Indian Institute of Technology Kharagpur India

Graphene, an extraordinary allotropy of carbon, the 2D nanosheet, have been synthesized through exfoliation of graphite in ortho dichloro benzene by sonication. The morphological changes in different interval of sonication have been investigated by Scanning Electron Microscopy (SEM) andTransmission Electron Microscopy (TEM). Raman Spectra confirmed the formation of defect free Graphene sheets. As prepared Graphene showed high thermal stability under N2 atmosphere. It has been observed that sonication for 4 hours, effectively exfoliates graphite to form Graphene sheets. However, further sonication leads to restacking of Graphene sheets. The formation of Graphene is supposed to be due to the Sonopolymerization of the solvent (ortho-dichloro benzene)and graphite solvent interaction.

关键词： Graphene Graphite Ortho-Dichloro Benzene Sonication Raman Spectra

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XNBR/NR并用胶在翻新工程机械轮胎中的应用

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轮胎工业 2009年第11期29卷 678-683页

作者： Kaushik Pal Tanya das Samir K. Pal chapal. das 肖大玲（摘译）耿新亭（校） Department of Mining Engineering Indian Institute of TeehnologyKharagpur 721302West BengalIndia Materials Science Centre Indian Institute of TechnologyKharagpur 721302West BengalIndia 《轮胎工业》编辑部北京橡胶工业研究设计院

矿山用工程机械轮胎价格十分昂贵、使用周期短、更换新胎成本很高,因此需要对其进行定期维护.刺扎、污染、磨耗和速度波动较大等恶劣的工作环境,致使工程机械轮胎使用寿命缩短.对于自卸车载重轮胎来说,使用时易发生胎面脱层、胎侧刺扎... 详细信息

矿山用工程机械轮胎价格十分昂贵、使用周期短、更换新胎成本很高,因此需要对其进行定期维护.刺扎、污染、磨耗和速度波动较大等恶劣的工作环境,致使工程机械轮胎使用寿命缩短.对于自卸车载重轮胎来说,使用时易发生胎面脱层、胎侧刺扎、冲击破裂和胎圈损坏等问题.为了满足矿山运输要求,必须改善轮胎胎面胶配方,从而提高胎面耐磨性能.

关键词：工程机械轮胎 XNBR 并用胶应用翻新 NR 胎面胶使用周期

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