Thermoplastic copolyether ester elastomer toughened polycarbonate blends

Sivaraman, P.; Manoj, N. R.; Barman, S.; Chandrasekhar, L.; Mishra, Vibhu; Samui, A. B.; Chakraborty, B.C.

doi:10.1016/j.polymertesting.2004.01.012

Cited by 18 publications

(12 citation statements)

References 18 publications

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“…Recently, grades with 35 to 65% bio-based content were introduced under the trade name Hytrel RS V R . Hytrel has outstanding mechanical properties [2,3] at temperatures up to 1308C combined with very good flexibility at low temperature. It shows good impact, and tear resistance, in addition to resistance against creep and abrasion.…”

Section: Introductionmentioning

confidence: 99%

Blends of polylactic acid with thermoplastic copolyester elastomer: Effect of functionalized terpolymer type on reactive toughening

Nagarajan

Mohanty

Misra

2017

Polymer Engineering & Sci

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This study is an attempt to explore the effectiveness of thermoplastic copolyester elastomer (TPCE) as a toughening agent for improving the impact strength of PLA. Biobased Hytrel® thermoplastic copolyester of polyether glycol and polybutylene terephthalate was selected as the TPCE of choice for this study. Blends of PLA/Hytrel at varying weight ratios were prepared using extrusion followed by injection molding technique. Optimal synergies of two polymers were found in the PLA/Hytrel (70/30) blend, showing impact strength of 234 J/m, a sixfold increase compared to neat PLA. In order to obtain further enhancement in toughness, different functionalized terpolymers were added to accomplish reactive compatibilization. A series of functionalized terpolymers, ethylene methyle acrylate‐glycidyl methacrylate (EMA‐GMA), ethylene butyl acrylate‐glycidyl methacrylate (EBA‐GMA), ethylene methyl acrylate‐maleic anhydride (EMA‐MaH), and ethylene butyl acrylate‐maleic anhydride (EBA‐MaH) were selected. Comparing PLA ternary blends with different terpolymers, GMA containing terpolymers showed better impact toughness compared to MaH terpolymer blends. Unique fracture surface morphology showing debonding cavitation and massive shear yielding in the ternary blends containing EMA‐GMA resulted in super toughened blends. Highest zero shear viscosity and storage modulus was also observed for ternary blends with EMA‐GMA. Under the processing conditions and blend ratio investigated, EMA‐GMA showed better efficiency in improving the toughness of the PLA blends. POLYM. ENG. SCI., 58:280–290, 2018. © 2017 Society of Plastics Engineers

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Section: Introductionmentioning

confidence: 99%

Blends of polylactic acid with thermoplastic copolyester elastomer: Effect of functionalized terpolymer type on reactive toughening

Nagarajan

Mohanty

Misra

2017

Polymer Engineering & Sci

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“…As a new member in the TPE family, TPEEs have not been researched very much. The most common work is to blend TPEEs with various polymers to obtain new alloy materials with excellent flex fatigue and a broadened service temperature range. − Very recently, microsized or nanosized particles, such as clays, talc, mica, silica, fly ash, and carbon nanotubes, have been used as inorganic fillers to improve the thermal, mechanical, and electrical properties of TPEEs, − aimed at extending their application in the industry and research fields. It is well accepted that the mechanical and physical properties of the semicrystalline polymers are governed by the supermolecular structure, which, in turn, is dominated by the crystallization histories.…”

Section: Introductionmentioning

confidence: 99%

Nucleation of a Thermoplastic Polyester Elastomer Controlled by Silica Nanoparticles

Chen

et al. 2016

Ind. Eng. Chem. Res.

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Crystallization control of the hard polyester segments is an important way to design the final properties of a thermoplastic polyester elastomer (TPEE). In this work, the crystallization behavior of TPEE with nanosilica as the nucleating agent was studied. Three kinds of nanosilica with various sizes and surface treatments were chosen for nucleation design. The results reveal that all types of nanosilicas have evident nucleating effects, leading to a remarkable increase of the crystallization temperature of TPEE even by about 30 °C. However, the overall crystallization process is highly dependent on the particle size and surface treatment of silica because it is closely related to the nucleation ability of the particles and alteration of the system viscosities. The crystallization temperature of TPEE is more sensitive to the surface treatment of silica, while its crystallization rate shows a higher dependence on the particle size of silica. This work provides a facile way to well tailor crystallization of TPEE.

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“…The observed E ′ peaks (figure not shown) were shifted to higher temperature with increasing cenosphere percent. There are no significant difference in E ′′ at 40°C of the hybrid coatings but decreased above T g 40, 41. The values of crosslink density indicate that HPNG 3 (2%) hybrid coatings were closely packed network as compared to HPNG 1 (2%), HPNG 2 (2%).…”

Section: Resultsmentioning

confidence: 83%

Thermal and thermomechanical properties of hyperbranched polyurethane‐urea/cenosphere hybrids

Jena

Mishra

Raju

2008

J of Applied Polymer Sci

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ABSTRACT:Hyperbranched polyurethane (HBPU)-urea/cenosphere hybrid coatings were synthesized by incorporating various concentrations of cenosphere into HB polyester matrix by ultrasonication technique, and this polyester was further used for the preparation of isocyanate terminated HBPU prepolymers by reacting with excess isophorone diisocyanate (IPDI) in a NCO/OH ratio of 1.6 : 1. The desired hybrid coating is obtained by moisture curing the excess NCO present in the prepolymer through film casting. The structure of the hyperbranched polyester (HBPE) was conformed by 1 H, 13 C NMR and FTIR spectroscopy and the degree of branching (DB) was calculated using Frechet and Frey equations. These hybrid films were characterized by powder XRD, FTIR, SEM, DMTA, and TGA. The structure property correlation, intermolecular/intramolecular hydrogen bonding, the surface morphology, and viscoelastic properties were studied. These results showed an increase in T g and thermal stability of the hybrid coatings than the base polymer.

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Thermoplastic copolyether ester elastomer toughened polycarbonate blends

Cited by 18 publications

References 18 publications

Blends of polylactic acid with thermoplastic copolyester elastomer: Effect of functionalized terpolymer type on reactive toughening

Blends of polylactic acid with thermoplastic copolyester elastomer: Effect of functionalized terpolymer type on reactive toughening

Nucleation of a Thermoplastic Polyester Elastomer Controlled by Silica Nanoparticles

Thermal and thermomechanical properties of hyperbranched polyurethane‐urea/cenosphere hybrids

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