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Rani Joseph

Bio: Rani Joseph is an academic researcher from Cochin University of Science and Technology. The author has contributed to research in topics: Natural rubber & Tear resistance. The author has an hindex of 27, co-authored 187 publications receiving 2750 citations.


Papers
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Journal ArticleDOI
TL;DR: In this paper, the microwave absorption, microwave reflection and EMI shielding properties of PANI-polyurethane (PANI-PU) composite were evaluated both at S-band and X-band frequencies.

228 citations

Journal ArticleDOI
TL;DR: A comprehensive overview of reclamation of cured rubber with special emphasis on latex reclamation is depicted in this paper, where the role of different components in the reclamation recipe is explained and the reaction mechanism and chemistry during reclamation are discussed in detail.

167 citations

Journal ArticleDOI
17 Mar 2006-Polymer
TL;DR: In this paper, the authors investigated the crystallization characteristics of melt compounded nanocomposites of poly(ethylene terephthalate) (PET) and single walled carbon nanotubes (SWNTs).

142 citations

Journal ArticleDOI
TL;DR: In this paper, an ultrasonication assisted mixing of aqueous dispersions of multiwalled carbon nanotubes with natural rubber (NR) latex followed by film casting and curing is described.

95 citations

Journal ArticleDOI
TL;DR: The effect of replacing carbon black by rice husk derived type-I nanocellulose (RHNC) in natural rubber vulcanization is presented and shows that RHNC can impart low rolling resistance, which is a crucial parameter for green tire applications.

85 citations


Cited by
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Journal ArticleDOI
TL;DR: In this paper, an extended account of the various chemical strategies for grafting polymers onto carbon nanotubes and the manufacturing of carbon-nanotube/polymer nanocomposites is given.

2,766 citations

Journal ArticleDOI
TL;DR: It is shown that high-shear mixing of graphite in suitable stabilizing liquids results in large-scale exfoliation to give dispersions of graphene nanosheets in liquid volumes from hundreds of millilitres up to hundreds of litres and beyond.
Abstract: To progress from the laboratory to commercial applications, it will be necessary to develop industrially scalable methods to produce large quantities of defect-free graphene. Here we show that high-shear mixing of graphite in suitable stabilizing liquids results in large-scale exfoliation to give dispersions of graphene nanosheets. X-ray photoelectron spectroscopy and Raman spectroscopy show the exfoliated flakes to be unoxidized and free of basal-plane defects. We have developed a simple model that shows exfoliation to occur once the local shear rate exceeds 10(4) s(-1). By fully characterizing the scaling behaviour of the graphene production rate, we show that exfoliation can be achieved in liquid volumes from hundreds of millilitres up to hundreds of litres and beyond. The graphene produced by this method performs well in applications from composites to conductive coatings. This method can be applied to exfoliate BN, MoS2 and a range of other layered crystals.

1,973 citations

Journal ArticleDOI
TL;DR: A review of the literature on the various aspects of cellulosic fibres and biocomposites can be found in this paper, where the pros and cons of using these fibres are enumerated in this review.

1,908 citations

Journal Article
TL;DR: In this article, a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators were developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of 3D micro-optical and micromechanical structures, including photonic-bandgap-type structures.
Abstract: Two-photon excitation provides a means of activating chemical or physical processes with high spatial resolution in three dimensions and has made possible the development of three-dimensional fluorescence imaging, optical data storage, and lithographic microfabrication. These applications take advantage of the fact that the two-photon absorption probability depends quadratically on intensity, so under tight-focusing conditions, the absorption is confined at the focus to a volume of order λ3 (where λ is the laser wavelength). Any subsequent process, such as fluorescence or a photoinduced chemical reaction, is also localized in this small volume. Although three-dimensional data storage and microfabrication have been illustrated using two-photon-initiated polymerization of resins incorporating conventional ultraviolet-absorbing initiators, such photopolymer systems exhibit low photosensitivity as the initiators have small two-photon absorption cross-sections (δ). Consequently, this approach requires high laser power, and its widespread use remains impractical. Here we report on a class of π;-conjugated compounds that exhibit large δ (as high as 1, 250 × 10−50 cm4 s per photon) and enhanced two-photon sensitivity relative to ultraviolet initiators. Two-photon excitable resins based on these new initiators have been developed and used to demonstrate a scheme for three-dimensional data storage which permits fluorescent and refractive read-out, and the fabrication of three-dimensional micro-optical and micromechanical structures, including photonic-bandgap-type structures.

1,833 citations

Journal ArticleDOI
TL;DR: In this paper, a comprehensive survey of electrical percolation of carbon nanotubes (CNT) in polymer composites is presented, together with an attempt of systematization.

1,815 citations