Study of Mechanical and Thermomechanical Properties of Vinyl Ester/Polyurethane Interpenetrating Polymer Network Based Hybrid Composites

Goswami, Sudipta; Ranjan, Jagesh Kumar

doi:10.1007/s12221-020-9338-5

Cited by 12 publications

(12 citation statements)

References 42 publications

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“…Better compactness in the composites happens due to better interaction between resin and filler surfaces. 29 According to rule of additivity for a polymer blend of two components specific gravity may be expressed theoretically by the equation 2.…”

Section: Specific Gravity Of Nanocompositesmentioning

confidence: 99%

Mechanical and thermomechanical properties of vinyl ester/polyurethane IPN based nano-composites

Ranjan

Goswami

2021

Polymers and Polymer Composites

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Interpenetrating polymer networks of vinyl ester (VE) resin and polyurethane (PU) were synthesized using blend ratio of 93:7(w/w). Two sets of nanocomposites based on i) pure vinyl ester and ii)VE/PU IPN(93VE), were prepared with organically modified silica nanoparticle (OMS) as filler by 1, 2, 3 and 5% weight of the matrix resin. All the nanocomposites were characterized in terms of mechanical and thermomechanical properties.VE/silica nanocomposite with 2% filler (VES2) showed improvement in ultimate tensile strength by 83.5% and toughness by 42% compared to that of VE resin itself. The IPN based nanocomposite, 93VES2, exhibited 31.14%, 10.8% and 18%greater tensile strength, Young’s modulus and toughness respectively in comparison to that of the base 93VE IPN. IPN based nanocomposites were tougher than VE based nanocomposites. Storage modulus of nanocomposites was lower than that of 93VE and VE matrix system. Higher tanδmax of the 93VE/OMS nanocomposites than that of the 93VE matrix was indication of more elastic nature of the later. Smaller size of dispersed domains was found in SEM micrographs for IPN based nanocomposites than that in micrographs of VE based nanocomposites of corresponding composition.

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Section: Specific Gravity Of Nanocompositesmentioning

confidence: 99%

Mechanical and thermomechanical properties of vinyl ester/polyurethane IPN based nano-composites

Ranjan

Goswami

2021

Polymers and Polymer Composites

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“…Random fibre orientation had a minor effect on STF/VE bio-composite density, followed by woven and unidirectional fibre orientations. In this case, it can be explained that the unidirectional fibre orientation of STF/VE biocomposite is more solid and heavier than other fibre orientations [44]. The Fibre volume fraction is directly proportional to the experiment level.…”

Section: Sn Ratio Analysismentioning

confidence: 85%

Multi-objective Optimization of Sansevieria Trifasciata Fiber Reinforced Vinyl Ester (STF/VE) Bio-composites for the Sustainable Automotive Industry

Shieddieque

Mardiyati

et al. 2022

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Bio-composite materials have taken an extensive interest in research over the years due to their excellent properties, such as excellent mechanical and physical properties, stiffness, and low density/lightweight. The exceptional properties of bio-composite materials have had a widespread application in several industries, such as; the packaging industry, construction, automotive, and other related engineering fields. This research investigates mechanical, physical, and microstructure properties of Sansevieria Trifasciata (STE) natural fiber, -reinforced Vinyl Ester (STF/VE) bio-composite. The mechanical and physical properties of STF/VE bio-composites, including the tensile strength and density, are investigated through fibre preparation, orientation, and fibre volume fraction parameters. The STF/VE bio-composite tensile strength coupon is manufactured using the bio-composite transfer moulding (BTM) process and with pressure moulding. The Taguchi experimental design and analysis of variance (ANOVA) are selected to investigate the effect of variables on the mechanical properties model. The alkali preparation of STF, unidirectional fibre orientation, and fibre volume fraction improve tensile strength. Non-alkali treatment and random fibre orientatio, on the other hand, result in a reduction of density. The results of the ANOVA analysis show that the fibre volume fraction (wt.%) is the variable that most significantly affects the tensile strength and density responses, with contributions of 50.57% of tensile strength and 51.34% of density, respectively. Based on the optimization results, the STF/VE with alkali treatment, unidirectional, and 15 w.t.% is chosen as the best bio-composite formulation, with the best tensile strength-density balance. It indicates that the optimum parameter was successfully achieved among the samples examined in this work.

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“…IPNs were prepared by the methodology as described in the earlier works. 5,6,19 Polyurethane prepolymer was mixed uniformly under constant stirring with vinyl ester prepolymer in a glass jar. Then, the required catalysts, promoter, and initiator for the curing reaction of VE and polymerization of the PU were added and mixed well in an ultrasonicator.…”

Section: Methodsmentioning

confidence: 99%

“…5 Blending of polymers is an effective way to develop novel polymer materials with excellent properties and is considered for the improvement in toughness of thermoset resins as novolac, epoxies, etc. 6 The toughness of VE has been increased earlier by blending with an elastomer, 7 a thermoplastic, and another thermoset 8 prepolymer. IPN formation is one of the most modern techniques of blending a thermoplastic resin with a thermoset base to achieve toughness like thermoplastic while retaining high modulus and thermal stability of the thermoset.…”

Section: Introductionmentioning

confidence: 99%

Studies on the thermal stability of vinyl ester/polyurethane IPNs by gravimetric analysis

Ranjan

Goswami

2022

Journal of Elastomers & Plastics

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Interpenetrating polymer networks based on vinyl ester resin and polyurethane were synthesized using different blend ratio, for example, 93:7, 90:10, and 80:20 (w/w). The samples were subjected to thermogravimetric analysis under non-isothermal conditions in presence of an inert atmosphere within the temperature range of 303–773K. Determination of distributed activation energy at various stages of degradation process and its implication in the reaction mechanism was investigated by using various isoconversional models and Kissinger’s model fitting approaches. It was observed that IPNs showed higher thermal stability and also possessed higher activation energy for degradation than pure VE in the selected range of temperature when heated at a specific rate.

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Study of Mechanical and Thermomechanical Properties of Vinyl Ester/Polyurethane Interpenetrating Polymer Network Based Hybrid Composites

Cited by 12 publications

References 42 publications

Mechanical and thermomechanical properties of vinyl ester/polyurethane IPN based nano-composites

Mechanical and thermomechanical properties of vinyl ester/polyurethane IPN based nano-composites

Multi-objective Optimization of Sansevieria Trifasciata Fiber Reinforced Vinyl Ester (STF/VE) Bio-composites for the Sustainable Automotive Industry

Studies on the thermal stability of vinyl ester/polyurethane IPNs by gravimetric analysis

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