Qualification: 
Ph.D, MSc, BSc
m_kannan@cb.amrita.edu

Dr. Kannan M. currently serves as Assistant Professor at Department of Chemical Engineering, School of Engineering, Coimbatore Campus. His areas of research include Polymer Blends, Testing and Characterization.

AFFILIATIONS

QUALIFICATIONS

YEAR DEGREE/PROGRAM INSTITUTION
2012 Ph. D., (Polymer Blend) MG University, Kottayam
1986 MSc. in Applied Chemistry GCT, Coimbatore 
1984 BSc. in Applied Science CIT, Coimbatore 

CERTIFICATES, AWARDS, HONORS, AND SOCIETIES

  • ISTE Member

Publications

Publication Type: Journal Article

Year of Publication Publication Type Title

2017

Journal Article

M. Remanan, Dr. Kannan M., Rao, R. Subba, Shantanu Bhowmik, Lalit Varshney, Mathew Abraham, and Dr. Jayanarayanan K., “Microstructure Development, Wear Characteristics and Kinetics of Thermal Decomposition of Hybrid Nanocomposites Based on Poly Aryl Ether Ketone, Boron Carbide and Multi Walled Carbon Nanotubes”, Journal of Inorganic and Organometallic Polymers, pp. 1–15, 2017.[Abstract]


In the present study a high performance polymer poly aryl ether ketone (PAEK) is reinforced with micro and nano boron carbide (B4C) and functionalized multi walled carbon nanotubes (F-MWCNT) to investigate the individual and hybrid effect of the fillers. Optical microscopy and transmission electron microscopy suggested the dispersion of micro and nano fillers respectively in PAEK matrix. The inclusion of B4C nano fillers increased the hardness of the composites which aided the wear resistance of the composites. The morphological features of the worn surface of the samples are analyzed using scanning electron microscopy. It is found from the izod impact test analysis that the impact strength of the composite enhanced by the F-MWCNT inclusion. The thermal properties of PAEK in the composites are studied using differential scanning calorimetry and it revealed dominant effect of F-MWCNT influencing the thermal transitions than the B4C particles. The kinetics of thermal degradation of various composites is analyzed using Coats–Redfern method. The positive influence of B4C in the matrix indicates that the thermal degradation is delayed due to the higher activation energy it possesses. The overall results shows that the hybrid nanocomposite exhibits better properties compared to individual micro and nano composites.

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2015

Journal Article

Dr. Kannan M., Joseph, K., and Thomas, S., “Dynamic mechanical properties of nanoclay filled TPU/PP blends with compatibiliser”, Plastics, Rubber and Composites, vol. 44, pp. 245-251, 2015.[Abstract]


Blends of thermoplastic polyurethane (TPU) and polypropylene (PP) are highly incompatible because of large differences in polarities and high interfacial tensions. On one hand, PP is added to TPU to improve TPU's thermal stability, chemical properties, mechanical properties (modulus, strength and hardness) and processing performance and to reduce TPU's cost. On the other hand, TPU is blended with PP to improve PP's properties (e.g. abrasion, flexibility, tear strength, shock absorbing capabilities, impact strength, adhesion and paintability/printability). Earlier works in polyurethane/organoclay nanocomposites, PP/organoclay nanocomposites and TPU/PP blends were studied. In our experimental work, both ester and ether based TPU nanocomposites were prepared by melt blending using 3 wt-% Cloisite 10A (organically modified montmorillonite clay) as the nanoscale reinforcement and blended with PP with/without PP-graft-maleic anhydride as the compatibiliser. Blends of nanoclay filled TPU/PP were evaluated for dynamic mechanical properties such as storage modulus E′, loss modulus E″ and dissipation factor tanδ. © Institute of Materials, Minerals and Mining 2015.

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2014

Journal Article

Dr. Kannan M., Bhagawan, S. S., Thomas, S., and Joseph, K., “Studies on electrical properties of nanoclay filled thermoplastic polyurethane/polypropylene blends”, Polymer Composites, vol. 35, pp. 1671–1682, 2014.[Abstract]


The electrical properties of ester/ether-based thermoplastic polyurethane (TPU) and polypropylene (PP) blends are presented in this article. Special attention has been paid to analyze the effect of blend ratio, compatibilization, and effect of nanoclay on the electrical properties of TPU/PP blends. The electrical properties measured were dielectric constant (ε′), volume resistivity (ρυ), loss factor (ε″), and dissipation factor (tan δ). Addition of PP into TPU increases the volume resistivity and reduces the dissipation and loss factor due to the decrease in the overall polarity of the system. Further addition of compatibilizer and nanoclay to this system reduced the dissipation factor and loss factor with increased volume resistivity. Compared with the ether-TPU based blend nanocomposites, the ester-TPU blends show better compatibility as confirmed by analysis.

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2013

Journal Article

Dr. Kannan M., Bhagawan, S. S., Thomas, S., and Joseph, K., “Nanoclay effect on transport properties of thermoplastic polyurethane/polypropylene (TPU/PP) blends”, Journal of Polymer Research, vol. 20, pp. 1–15, 2013.[Abstract]


In this paper the diffusion of water through the nanoclay filled TPU/PP blends was investigated at various temperatures. The effect of blend ratio, compatibilisation and nanoclay addition on the transport properties was studied in detail. Special attention has been given to study the mechanism of diffusion. Thermodynamics and Arrhenius parameters were evaluated from the diffusion data. The various parameters such as diffusion coefficient (D), permeation coefficient (P), sorption coefficients (S) were evaluated at different diffusion conditions. Attempts were made to correlate the observed morphology of the blends with transport properties. Addition of PP into TPU decreases water sorption of the system due to the decrease in overall polarity of the system and further reduced by addition of compatibiliser and nanoclay into the system. Compared to the ether-TPU based blend nanocomposites, the ester-TPU blends show better compatibility as confirmed by analysis.

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2013

Journal Article

Dr. Kannan M., Bhagawan, S. S., Thomasb, S., and Joseph, K., “Thermogravimetric analysis and differential scanning calorimetric studies on nanoclay-filled TPU/PP blends”, Journal of Thermal Analysis and Calorimetry, vol. 112, pp. 1231-1244, 2013.[Abstract]


Thermal stability of ester-thermoplastic polyurethane (TPU)/polypropylene (PP) and ether-TPU/PP blends was evaluated by thermogravimetric studies. Thermal studies were made as a function of blend ratio. Effects of compatibilization using MA-g-PP and nanoclay addition on thermal stability were evaluated. Mass loss at 400 C was found to decrease with increasing PP content were determined. Finally the compatibility and crystallization behavior of the blends were studied by differential scanning calorimetry. Compared to the ether-TPU blend nanocomposites, the ester-TPU blends showed better compatibility and thermal stability. © 2012 Akadémiai Kiadó, Budapest, Hungary.

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2012

Journal Article

Dr. Kannan M., Bhagawan, S. S., Thomas, S., and Joseph, K., “Comparison of theory with experimental data for nanoclay-filled TPU/PP blend”, Industrial and Engineering Chemistry Research, vol. 51, pp. 13379-13392, 2012.[Abstract]


The mechanical properties of thermoplastic polyurethane (TPU)/polypropylene (PP) blends were investigated with special reference to the effect of type of polyurethane (ester- or ether-based), blend ratio, compatibilizer, and sequence addition of nanoclay. Tensile strength, stress at different elongations, flexural modulus, and abrasion resistance were analyzed and correlated with morphology. Blends of nanoclay filled thermoplastic polyurethane (TPU)/polypropylene (PP) of various compositions were evaluated by dynamic mechanical properties such as storage modulus (E'), loss modulus (E''), and dissipation factor (tan δ), at a frequency of 10 Hz over a temperature range from -100 to 200 °C. Finally different theoretical models were used to compare the experimental results with theoretical predictions. © 2012 American Chemical Society.

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2011

Journal Article

Bab Suresh, Maruthamuthu, Sa, Khare, Ac, Palanisamy, Na, Muralidharan, V. Sd, Ragunathan, Rb, Dr. Kannan M., and Pandiyaraj, K. Nf, “Influence of thermal oxidation on surface and thermo-mechanical properties of polyethylene”, Journal of Polymer Research, vol. 18, pp. 2175-2184, 2011.[Abstract]


Blown low density polyethylene (LDPE) films added with oxo-biodegradable additive containing pro-oxidant were subjected to thermo-oxidation in an oven at 70 °C for varying time periods. The changes in mechanical and surface properties were studied using tensile strength, elongation at break, wettability, surface morphology using SEM, surface topology by AFM, functional groups by FTIR spectroscopy, absorbance spectra by UV-Vis spectroscopy. The thermally aged films with pro-oxidant additive added polyethylene (PE) exhibited a higher level of oxidation as revealed by increase in their carbonyl index than the pristine PE. In addition to it, the DSC melting behavior showed a slight increase in crystallinity (%C) and melting temperature (Tm) of the polymer containing oxo-biodegradable additive. The SEM micrograph reveals the increase in the size of cracks and grooves, according to the increase in the concentration of pro-oxidant additive. The surface roughness also supports the same through AFM image. The increase in the wettability and surface free energy of the thermally aged samples were attributed to the formation of hydrophilic groups on the polymer surface by thermo-oxidation. The pro-oxidant additive offers a new insight into the thermo-oxidation strategy for PE and can be widely used in packaging industry. © 2011 Springer Science+Business Media B.V.

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2011

Journal Article

Bab Suresh, Maruthamuthu, Sa, Dr. Kannan M., and Chandramohan, Ad, “Mechanical and surface properties of low-density polyethylene film modified by photo-oxidation”, Polymer Journal, vol. 43, pp. 398-406, 2011.[Abstract]


Mechanical and surface properties are considered important in governing the physical strength of polymers. A commercially available oxo-biodegradable polymer additive, which has induced surface and mechanical property changes during photo-oxidation in low-density polyethylene (LDPE) films, has been studied. LDPE films containing the oxo-biodegradable additive were irradiated with ultraviolet (UV)-B lamps at 30 ± 1 °C for an extended time period. The changes manifested on the polymer surface and in the mechanical properties were studied with respect to surface wettability, surface morphology using scanning electron microscope, surface topology by atomic force microscopy, functional groups by Fourier transformed infrared spectroscopy, absorbance spectra by UV-visible spectroscopy and elongation at break and tensile strength through mechanical testing. The increase in the wettability and surface-free energy of the irradiated samples was attributed to the formation of hydrophilic groups on the polymer surface by photo-oxidation, which occurs by the exposure of PE to UV irradiation in the presence of air. The degree of reduction in the mechanical strength and surface property modifications in our study are appreciable through the use of an oxo-biodegradable additive added to LDPE film samples. © The Society of Polymer Science, Japan (SPSJ) All rights reserved.

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2010

Journal Article

Dr. Kannan M., Bhagawan, S. Sa, Jose, Tb, Thomas, Sc, and Joseph, Kd, “Preparation and characterization of nanoclay-filled polyurethane/ polypropylene blends”, Polymer Engineering and Science, vol. 50, pp. 1878-1886, 2010.[Abstract]


Ester-based thermoplastic polyurethane (TPU) nanocomposites were prepared by melt blending at 190°C, using 3 wt% Cloisite 10A (organically modified montmorillonite clay) as the nanoscale reinforcement [TPU(C10A)]. The nanocomposites were subsequently melt-blended with polypropylene (PP) using maleic anhydride-grafted polypropylene (MA-g-PP) as a compatibilizer [in the ratio of 70/30-TPU/PP, 70/25/5-TPU/PP/MA-g-PP, 70/25/5-TPU (C10A)/PP/MA-g-PP]. Besides giving substantial increase in modulus, tensile strength, and other properties, organoclay reinforcement functions as a surface modifier for TPU hard segment resulting in improved dispersion. The morphology and other characteristics of the nanocomposite blends were investigated in terms of X-ray diffraction, fourier transform infrared spectroscopy, differential scanning calorimetry, dynamic mechanical analysis, tensile properties, scanning electron microscopy, and atomic force microscopy. The results indicate that the ester-TPU(C10A)/PP/MA-g-PP exhibited better dispersion than other blend systems; abrasion resistance and water absorption resistance were also better for this system. © 2010 Society of Plastics Engineers.

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2010

Journal Article

Dr. Kannan M., Bhagawan, S. Sa, Jose, Tb, Thomas, Sc, and Joseph, Kd, “Effect of sequence of nanoclay addition in TPU/PP blends: Thermomechanical properties”, Journal of Materials Science, vol. 45, pp. 1078-1085, 2010.[Abstract]


Nanoclay filled thermoplastic polyurethane (TPU)/polypropylene (PP) blends compatibilized with maleic anhydride grafted polypropylene (MA-g-PP) have been studied with emphasis on sequence of nanoclay addition. In sequence I [TPU(nano)/PP/MA-g-PP], nanoclay was first added to TPU and this nano composite was blended with PP, using MA-g-PP as compatibilizer. In the case of sequence II [TPU/PP(nano)/MA-g-PP], nanoclay was added first to PP and blended with TPU, using MA-g-PP as compatibilizer. These blend systems were evaluated by DSC, FTIR, DMA, SEM, XRD and tensile properties. The results indicated that sequence I imparted greater compatibility to the polymers and better nanoclay dispersion than sequence II. Overall the TPU(nano)/PP/MA-g-PP blend system shows better dispersion than TPU/PP(nano)/MA-g-PP. © 2009 Springer Science+Business Media, LLC.

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2010

Journal Article

S. .S.Bhagawan, Thomas, S., Joseph, K., and Dr. Kannan M., “Characterization of nanoclay filled polymer blends”, SPE Plastics research: Online: Plastics Nanotechnology, 2010.

2009

Journal Article

Dr. Kannan M., Bhagawan, S. S., Joseph, K., and Thomas, S., “Mechanical properties and morphology of nanoclay-filled different TPU/PP blends”, Polymer-Plastics Technology and Engineering, vol. 48, pp. 871–876, 2009.[Abstract]


Thermoplastic polyurethanes (TPU) (based on ether and ester polyols) were blended with nonpolar material of PP. Nanoclay was used to reduce the surface energy of the TPU hard segments and makes them more compatible with the non-polar PP. More compatible blends have been obtained by using MA-g-PP as the compatibiliser. Blends were produced by melt mixing using a twin crew extruder. Compared to the ether-TPU based blend nano- composites, the ester-TPU blends show better compatibility as con- firmed by DMA, Tensile strength, XRD, SEM, and AFM analysis.

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2009

Journal Article

Dr. Kannan M., Bhagawan, S. S., Joseph, K., and Thomas, S., “Mechanical Properties and Morphology of Nanoclay Filled Different TPU/PP Blend Nanocomposites: Structure-Property Relations”, Journal of composite materials, vol. 43, no. 18, pp. 1915-1926, 2009.[Abstract]


Thermoplastic polyurethanes (TPU) (based on ether and ester polyols) were blended with nonpolar polypropylene (PP). Nanoclay was used to reduce the surface energy of the TPU hard segments and make them more compatible with the nonpolar PP. More compatible blends were obtained by using MA-g-PP as the compatibilizer. Blends were produced by melt mixing using a twin screw extruder. Compared to the ether-TPU-based blend nanocomposites, the ester-TPU blends show better compatibility as confirmed by DMA, Tensile strength, XRD, SEM, and AFM analysis

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2008

Journal Article

Dr. Kannan M., Bhagawan, S. Sa, Joseph, Kb, and Thomas, Sc, “Thermomechanical behavior of nanoclay filled TPU/PP blends”, E-Polymers, 2008.[Abstract]


Both ester- and ether- based thermoplastic polyurethane (TPU) nanocomposites were prepared by melt blending, using 3 wt % Cloisite 10A (organically modified montmorillonite clay) as the nano scale reinforcement. The nanocomposites were subsequently melt-blended with polypropylene (PP) using maleic anhydride grafted polypropylene (MA-g-PP) as a compatibilizer (in the ratio of 70/30- TPU nano/PP, 70/25/5-TPU nano/PP/MA-g-PP). Besides giving substantial increase in modulus, tensile strength and other properties organoclay reinforcement functions as a surface modifier for TPU hard segment. X-ray diffraction studies revealed that compatibilization is further improved by introducing functionalized PP (MA-g-PP) in the organoclay containing blends. The blend system was evaluated by DSC, DMA, SEM, mechanical properties and X-ray diffraction. The results indicate that the ester- TPU exhibited greater miscibility than ether-TPU. Abrasion resistance and water absorption were also better for compatibilised ester- TPU blends as compared to the ether-TPU materials.

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2006

Journal Article

Dr. Kannan M., Bhagawan, S. S., Joseph, K., and Thomas, S., “Thermoplastic polyurethane based blends and nanocomposites: Structure - properties relations”, International Journal of Plastic Technology, vol. 10, no. 1, pp. 575-585, 2006.

Courses

CODE SUBJECT
CL 721 Polymer Nanocomposites
CL 705 Polymer Materials
CH 240 Inorganic and Physical Chemistry
  Instrumental methods of analysis, Catalysts, Testing and characterization. 
207
PROGRAMS
OFFERED
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AMRITA
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15
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