1. K.R.Prakash ,B.M.Satish, P.K.Jain and S.H.Kameshwari Devi,” Need for optimization of graphite partical reinforcement in ZA-27 Alloy Composites for Tribological Applications” Material science and engineering A530, 2011;82-388.
2. S.H.Kameshwari Devi and G.M.Shashidhara “Studies on PP/SBS Blends with and without Nanoclay” Indian Journal of Engineering and Material Sciences, 2011; 18: 69-79. ISSN: 0975- 1017 (Online)
3. S.H.Kameshwari Devi, G.M.Shashidhara and A.K.Ghosh “Characterization of HDPE/MMT based Nanocomposites ” Composite interfaces 17(2010), 217-222.
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RESEARCH INTERESTS
Biopolymers and biodegradable polymer development
Recycling of single use polymers into value added products
7
Scopus Publications
98
Scholar Citations
5
Scholar h-index
5
Scholar i10-index
Scopus Publications
Mechanical and Morphological Analysis of 3D-Printed Polylactic Acid-Polybutylene Adipate Terephthalate Composite Suchetha N. Raju, S.H. Kameshwari Devi, K.P. Ajeya, K. Prashantha Journal of Research Updates in Polymer Science, 2026 In this research paper, a detailed examination of the mechanical properties and morphologies of PLA and PBAT polymer blend materials which were produced through 3D printing techniques was conducted. The examination was completed using a PLA/PBAT/Joncryl blended material with a composition ratio of 77/20/3 wt% and manufactured through FDM techniques and an experimental design technique known as the Taguchi method to evaluate the effects of various manufacturing parameters on the mechanical characteristics of the material. This study investigates the mechanical and morphological performance of FDM-printed PLA/PBAT/Joncryl blend specimens using a Taguchi L9 design. A PLA/PBAT/Joncryl blend (77/20/3 wt%) was fabricated and printed by varying layer height (0.16–0.24 mm), printing temperature (190–210 °C), and infill density (50–100%). The optimal condition (0.16 mm, 210 °C, 100% infill) produced a maximum tensile strength of 41.20 N/mm² and elongation of 12.42%. ANOVA results confirmed infill density as the most significant parameter contributing 81.35% of the variance (P = 0.009). SEM revealed reduced voids and improved interlayer fusion at higher infill levels, while DMA showed higher storage modulus (~2200 MPa) for 100% infill specimens. The findings provide a process–structure–property relationship for optimizing biodegradable PLA/PBAT components for high-strength applications. This study illustrates that the infill % is the primary parameter that should be adjusted, while the layer height and printing temperature contribute but to a lesser extent to the improved performance of biodegradable PLA/PBAT/Joncryl blends.
Mechanical, Thermal, and Morphological Analysis of 3D-Printed Polylactic Acid–Polyester Urethane Blends with Varied Infill and Material Compositions Suchetha N. Raju, Suchetha N. Raju, S.H. Kameshwari Devi, K.P. Ajeya, K. Prashantha Journal of Research Updates in Polymer Science, 2025 Multimaterial 3D printing allows for the production of intricate parts with customized mechanical properties, enhancing the versatility of material extrusion additive manufacturing. Typically, 3D printing machines are fed with commercially available filament feedstock, which limits the 3D printing of multiple materials. Hence, this study introduces in-house prepared filaments for creating polymer blend structures with improved properties. In this study, polylactic acid and thermoplastic poly ester urethane (PEU) blends with different composition ratios were processed by varying the infill densities to evaluate their impacts on their thermal, mechanical and morphological properties. The effects of infill percentage on the mechanical, thermal and morphological behaviour were investigated. The results indicate that increasing the infill percentage tends to significantly increase the elastic modulus and tensile strength. The maximum strain increased as the infill percentage increased. Overall, the mechanical results indicated that, without sacrificing any tensile strength, the composite with 25% PEU exhibited better toughness than did the neat PLA and could be printed similarly to that of PLA. Furthermore, scanning electron images revealed that the blends had a homogeneous structure with a fibrillar morphology. These results indicate that 3D printing is an effective technique for creating next generation 4D materials.
An Investigation on the Properties of PLA/TPU Polymeric Blend System as a 3D Printable Material 16th International Conference on Advances in Computing Control and Telecommunication Technologies Act 2025, 2025
Studies on PP/SBS blends with and without nanoclay Indian Journal of Engineering and Materials Sciences, 2011
Characterization of HDPE/MMT-based nanocomposites S. H. Kameshwari Devi, G. M. Shashidhara, A. K. Ghosh Composite Interfaces, 2010 A series of HDPE/MMT nanocomposites with different proportions of compatibilizers, PE-g-MAH (AC573A and 5TP409/E) were prepared in a counter rotating twin screw extruder. The effect of nanoclay loading, compatibilizer type and amount was examined. The work was carried out using a specific grade of HDPE recommended for blow-moulding applications and modification of the same by blending with selected polymer and nanofiller to achieve the desired properties. The composition containing higher percentage of nanoclay showed improvement in mechanical properties. About 17% in tensile modulus and about 20% increase in flexural modulus were observed with high-viscous compatibilizer. The dispersion behaviour of nanoclay in PE matrix was studied using X-ray diffraction and transmission electron microscopy. It was clear from WXRD that in all nanocomposite samples, the peaks were shifted to lower 2 values implying that the d-spacing increases and that intercalation occurred. Low molecular weight compatibilizer PE-g-MA resulted in better intercalation than high molecular weight compatibilizer. It was observed that in the case of 5% AC573A loading, there was slight decrease in d-spacing value which indicated that some exfoliation also occurred in nanocomposite. Nanocomposite containing PE-g-MAH is higher concentration gives better dispersion than at low concentration. TEM results show that PE-g-MAH (AC573A) at 5% loading is more efficient as compatibilizer (not many aggregates seen) than other compositions.
RECENT SCHOLAR PUBLICATIONS
Effect of compositions and compatibilizer on the viscoelastic behavior of polycarbonate/acrylonitrile butadiene styrene blends SHK Devi, Siddaramaiah AIP Conference Proceedings 2316 (1), 060001 , 2021 2021
The effect of styrene maleic anhydride compatibilizer on the performance of polycarbonate/acrylonitrile butadiene styrene blends SHK Devi, S Hatna Materials Today: Proceedings 46, 2510-2514 , 2021 2021 Citations: 14
Effect of Thermoplastic Polyurethane content on properties of PC/TPU blend filled with Montmorillonite SHKDSDK G. M. Shashidhara Journal Carbon – Science & Technology, 5 (1), 218 – 224 , 2013 2013 Citations: 5
Isothermal crystallization behavior of PP and PP-g-GMA copolymer at high undercooling KDSHPS ShashidharaG.M. The Journal of the Russian Academy of Sciences. Polymer Science Series A … , 2013 2013 Citations: 13
Studies on PP/SBS blends with and without nanoclay GM Shashidhara, SHK Devi Indian Journal of Engineering & Materials Sciences 18 (1), 69-78 , 2011 2011 Citations: 12
Need for optimization of graphite partical reinforcement in ZA-27 Alloy Composites for Tribological Applications” PKJSHKD K.R.Prakash ,B.M.Satish Material science and engineering 530, 382-388 , 2011 2011 Citations: 43
Characterization of HDPE/MMT-based nanocomposites SHK Devi, GM Shashidhara, AK Ghosh Composite interfaces 17 (2-3), 217-222 , 2010 2010 Citations: 11
MOST CITED SCHOLAR PUBLICATIONS
Need for optimization of graphite partical reinforcement in ZA-27 Alloy Composites for Tribological Applications” PKJSHKD K.R.Prakash ,B.M.Satish Material science and engineering 530, 382-388 , 2011 2011 Citations: 43
The effect of styrene maleic anhydride compatibilizer on the performance of polycarbonate/acrylonitrile butadiene styrene blends SHK Devi, S Hatna Materials Today: Proceedings 46, 2510-2514 , 2021 2021 Citations: 14
Isothermal crystallization behavior of PP and PP-g-GMA copolymer at high undercooling KDSHPS ShashidharaG.M. The Journal of the Russian Academy of Sciences. Polymer Science Series A … , 2013 2013 Citations: 13
Studies on PP/SBS blends with and without nanoclay GM Shashidhara, SHK Devi Indian Journal of Engineering & Materials Sciences 18 (1), 69-78 , 2011 2011 Citations: 12
Characterization of HDPE/MMT-based nanocomposites SHK Devi, GM Shashidhara, AK Ghosh Composite interfaces 17 (2-3), 217-222 , 2010 2010 Citations: 11
Effect of Thermoplastic Polyurethane content on properties of PC/TPU blend filled with Montmorillonite SHKDSDK G. M. Shashidhara Journal Carbon – Science & Technology, 5 (1), 218 – 224 , 2013 2013 Citations: 5
Effect of compositions and compatibilizer on the viscoelastic behavior of polycarbonate/acrylonitrile butadiene styrene blends SHK Devi, Siddaramaiah AIP Conference Proceedings 2316 (1), 060001 , 2021 2021
Publications
1. Rajashekara Rakshitha, Bannimath Gurupadayya, · Sake Haridass Kameshwari Devi and Nagaraju Pallavi Coprecipitation aided synthesis of bimetallic silver tungstate:a response surface simulation of sunlight‐driven photocatalytic removal of 2,4‐dichlorophenol,, Environmental Science and Pollution Research, 2022
2. S. H. Kameshwari Devi and Siddaramaiah, “Effect of compositions and compatibilizer on the viscoelastic behavior of polycarbonate/ acrylonitrile butadiene styrene blends” AIP Conference Proceedings, 2021; 2316; 1: Published Online: 16 February 2021
3. S.H.Kameshwari Devi and Siddaramaiah The effect of styrene maleic anhydride compatibilizer on the performance of polycarbonate/acrylonitrile butadiene styrene blends” Materials Today Proceedings,2021: 46: 2510-2514
4. G. M. Shashidhara ,S. H. Kameshwari Devi and Shreyas D. Effect of Thermoplastic Polyurethane content on properties of PC/TPU blend filled with Montmorillonite K. Journal Carbon – Science & Technology, 2013; 5/1 : 218 – 224. ISSN0974-0546 (Online).
5. Shashidhara G.M., KameshawariDevi S.H. and PreethiS. “Isothermal crystallization behavior of PP and PP-g-GMA copolymer at high undercooling” The Journal of the Russian Academy of Sciences. Polymer Science Series A, Polymer Physics, 2013; 55, (6): 669–679. DOI 10.1134/S096554
GRANT DETAILS
• Preparation and characterization of biodegradable active food packaging film based on PLA/PCL and turmeric essential oil extracted from biowaste. for KSCST, Bangalore.
• Conversion Of Municipal Plastic Waste With Incorporation Of Wood Waste From Carpentry Works Into Value Added Product For Domestic Applications (2020-21) for KSCST, Bangalore.
• Design and fabrication of instrumented dart impact tester (1998-99) for KSCST, Bangalore.
• Studies on used ground tire blended polymers for domestic applications (2001-02)
for KSCST, Bangalore,
Industry, Institute, or Organisation Collaboration
Projects related to Biopolymers and Recycling of plastic waste with industrial collaboration
1. Preparation and characterization of biopolymeric films
2. Study on effect of recycling on properties of PP/Starch blends
3. Mechanical Recycling of thermoformed containers
5. Preparation And Characterization of blends of recycled Polypropylene and rPP/rPET industrial Waste
6. Design, development and performance evaluation of Bio-degradable Polyolefin material