Preparation and characterization of nanoclay‐filled polyurethane/polypropylene blends

Kannan, Murugasamy; Bhagawan, S. S.; Jose, Tomlal; Thomas, Sabu; Joseph, Kuruvilla

doi:10.1002/pen.21703

Cited by 21 publications

(13 citation statements)

References 23 publications

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“…FTIR spectrum of various blends and pure materials in transmittance mode are depicted in Figure . Most prominent peaks in TPU are at 3335, 2949, 1728, 1708 — , and 1640 cm −1 corresponding to hydrogen bonded NH stretching, asymmetric CH 2 stretching, free CO and hydrogen bonded CO, and amide groups, respectively . While in SEBS‐g‐MA, maleic anhydride groups show two CO bands because of the vibrational coupling of these groups.…”

Section: Resultsmentioning

confidence: 96%

Augmentation of performance properties of maleated SEBS/TPU blends through reactive blending

Anagha

Naskar

2019

J of Applied Polymer Sci

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Meticulous investigation of reactive blending of maleic anhydride grafted styrene–ethylene–butylene–styrene (SEBS‐g‐MA) and thermoplastic polyurethane (TPU) is carried out to achieve systems with controllable morphology and superior mechanical properties. Two types of SEBS‐g‐MA (abbreviated as M1, M2) with different maleic anhydride content were used to separately blend with TPU. Formation of imide group from the interaction of isocyanate and maleic anhydride predicted from the plausible reaction scheme was confirmed through Fourier transform infrared spectroscopy. High tensile strength of the blends along with appreciable elongation at break was witnessed. Morphology analyses using scanning electron microscopy and atomic force microscopy exposed a vivid and homogenous droplet morphology in all the blends presumably due to in situ formation of a suitable copolymer at the interface. Differential scanning calorimetry was used to pursue the thermal characteristics of the blends. Melt‐rheological behavior of the blends was examined using a rubber process analyzer. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48727.

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Section: Resultsmentioning

confidence: 96%

Augmentation of performance properties of maleated SEBS/TPU blends through reactive blending

Anagha

Naskar

2019

J of Applied Polymer Sci

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“…It can be seen that the PUSiO 2 hybrid network can enhance the abrasion resistance of NBR greatly. It is well known that the abrasion resistance of PU is excellent [33]. The PU crosslinked by SiO 2 preserves the outstanding abrasion resistance, the Akron abrasion loss of which is 0.45 cm 3 /1.61 km.…”

Section: Abrasion Resistance and Flex-fatigue Lifementioning

confidence: 98%

Novel blends of acrylonitrile butadiene rubber and polyurethane-silica hybrid networks

Tan¹,

Wang²,

Tai³

et al. 2012

Express Polym. Lett.

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Abstract. Novel blends of acrylonitrile butadiene rubber (NBR) and polyurethane-silica (PU-SiO 2 ) hybrid networks have been prepared by melt blending. The PU-SiO 2 hybrid networks were formed via the reaction of NCO groups of NCO-terminated PU prepolymer and OH groups of SiO 2 in the absence of an external crosslinking agent (i.e. alcohols and amines) during the curing process of NBR. Both in the neat PU-SiO 2 system and the NBR/(PU-SiO 2 ) system, the NCO-terminated PU prepolymer could be crosslinked by SiO 2 to form PU-SiO 2 hybrid networks. The effects of PU-SiO 2 introduction into the NBR, on the properties of the resulting blends were studied. It was found that the vulcanization was activated by the incorporation of PU-SiO 2 . Transmission electronic microscopy (TEM) studies indicated that the interpenetration and entanglement structures between NBR and PU-SiO 2 increased with increasing PU-SiO 2 content and the quasi-interpenetrating polymer networks (quasi-IPN) structures were formed when the PU-SiO 2 was 50 wt% in the NBR/(PU-SiO 2 ) systems. The microstructures formed in the blends led to good compatibility between NBR and PU-SiO 2 and significantly improved the mechanical properties, abrasion resistance and flex-fatigue life of the blends.

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“…The equilibrium concentration at which the domain size levels off can be considered as the so-called critical micelle concentration (CMC) of compatibilizer, that is, the concentration at which micelles are formed. The CMC has been estimated in separate study by the intersection of the straight lines at the low and high concentration regions, the CMC value for MAg-PP is 5% for this TPU/PP blends [29]. SEM micrographs of chemically etched (PP material was removed by xylene at 80 C) nanoclay (1%, 3%, and 5%) filled ester and ether based TPU/PP/MA-g-PP [70(nano)/25/5] blend system are shown in Figs.…”

Section: Morphologymentioning

confidence: 99%

Studies on electrical properties of nanoclay filled thermoplastic polyurethane/polypropylene blends

et al. 2013

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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. POLYM. COMPOS., 35:1671–1682, 2014. © 2013 Society of Plastics Engineers

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Preparation and characterization of nanoclay‐filled polyurethane/polypropylene blends

Cited by 21 publications

References 23 publications

Augmentation of performance properties of maleated SEBS/TPU blends through reactive blending

Augmentation of performance properties of maleated SEBS/TPU blends through reactive blending

Novel blends of acrylonitrile butadiene rubber and polyurethane-silica hybrid networks

Studies on electrical properties of nanoclay filled thermoplastic polyurethane/polypropylene blends

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