Dynamically Vulcanized Thermoplastic Elastomer Blends of Natural Rubber and Polypropylene

Riahi, Farid; Benachour, Djafer; Douibi, Abdelmalek

doi:10.1080/00914030490267564

Cited by 24 publications

(14 citation statements)

References 8 publications

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“…It is noted that thermoplastic elastomers (TPEs) based on biodegradable components are polymeric materials that enable recycling and reprocessing. They have also advantages in both processing and strength properties, as thermoplastics with the elasticity of vulcanized rubber . However, most TPEs have been produced by blending petroleum‐based synthetic rubbers, such as ethylene‐propylene rubber (EPR), ethylene‐propylene‐diene monomer (EPDM) rubber/polypropylene (PP), nitrile rubber (NBR)/PP, chloroprene rubber (CR)/PP, and ethylene‐1‐octene copolymer (EOC)/linear low‐density polyethylene (LLDPE) .…”

Section: Introductionmentioning

confidence: 99%

Influence type of natural rubber on properties of green biodegradable thermoplastic natural rubber based on poly(butylene succinate)

Faibunchan

Pichaiyut

Chueangchayaphan

et al. 2019

Polymers for Advanced Techs

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Green biodegradable thermoplastic natural rubber (GB‐TPNR) based on simple blend of natural rubber (NR) and poly(butylene succinate) (PBS) was prepared using three NR alternatives: unmodified NR and epoxidized NR with 25‐ or 50‐mol% epoxide (ie, ENR‐25 or ENR‐50). It was found that ENR‐50/PBS blend showed the best compatibility, which resulted in superior mechanical and thermal properties with the highest crystallinity of the PBS phase, on comparing with the ENR‐25/PBS and NR/PBS blends. This might be attributed to stronger chemical interactions between the epoxide groups in ENR‐50 and the polar functional groups in PBS, which were confirmed by Fourier transform infrared (FTIR). Furthermore, scanning electron microscopy (SEM), atomic force microscopy (AFM), and polarizing optical microscopy (POM) micrographs of ENR‐50/PBS blend revealed phase separation with finer‐grained cocontinuous structure than in ENR‐25/PBS and NR/PBS simple blends. Furthermore, the chemical interactions in ENR‐50/PBS blend enhanced the resistance to accelerated weathering.

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Section: Introductionmentioning

confidence: 99%

Influence type of natural rubber on properties of green biodegradable thermoplastic natural rubber based on poly(butylene succinate)

Faibunchan

Pichaiyut

Chueangchayaphan

et al. 2019

Polymers for Advanced Techs

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“…Various types of thermoplastics have been used to prepare TPNRs. These include polypropylene [12][13][14], polyethylene [15,16], polystyrene [17], polyamide-6 [18], and poly(methyl methacrylate) [19]. Ethylene-vinyl acetate copolymer (EVA) has also been used to prepare the TPNRs [20][21][22][23] due to its excellent ozone damage resistance, aging ability, weather resistance, and mechanical properties [24].…”

Section: Introductionmentioning

confidence: 99%

Dual phase continuity and phase inversion phenomena in natural rubber/ethylene vinyl acetate (EVA) copolymer blends

2012

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Abstract:Blending of polymers provide an attractive route to obtain new materials with unique combination of properties. Among the possible blend morphologies are dispersion of droplet, fiber, lamella in continuous phase and cocontinuous morphology. The unique feature of co-continuous is the mutual interpenetration of the phases which exhibits a number of advantageous properties and hence wider range of applications. Therefore, it is important to perform accurate determination of the co-continuous phase morphology and phase inversion phenomena. The rubber co-continuity index (solvent extraction), SEM micrographs and dynamic properties indicated the inversion occurred in the blends with rubber content 40 to 50 wt%. Furthermore, three empirical models (i.e., Ultracki, Steiman et al and Gergen et al models) could predict the phase continuity and phase inversion phenomena but other two (i.e., Paul-Barlow and MetelkinBlekht models) failed. Therefore, based on rubber co-continuity index, SEM micrographs, dynamic mechanical properties and prediction, the inversion phenomena occurred in the blends with rubber contents in a range of 40-50 wt%. Full co-continuity was found in the blends with the rubber contents of 46 to 60 wt%.

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“…The HDPE a blend component was manufactured by the Thai Polyethylene Co., Ltd. (Rayong, Thailand). It was injection-molding grade (H6007J) with a melt flow index of 7.5 g/10 21 min (2.16-kg loads at 1908C) and a density of 0.97 g/cm 3 . The MA used to prepare HDPE-g-MA was manufactured by Riedel-de Haën.…”

Section: Experimental Materialsmentioning

confidence: 99%

“…After the acetone was volatilized, MA and DCP adhered to the granules homogeneously. They were then incorporated into the mixing chamber of an internal mixer, a Brabender plasticorder model PLE331 (Brabender OHG, Duisburg, Germany) with a mixing chamber with a capacity of 80 cm 3 . The mixing was then performed at a screw speed of 60 rpm at 1808C and a fill factor of 0.8 for 10 min.…”

Section: Preparation Of the Blend Compatibilizersmentioning

confidence: 99%

Thermoplastic elastomers based on epoxidized natural rubber and high‐density polyethylene blends: Effect of blend compatibilizers on the mechanical and morphological properties

Nakason

Jarnthong

Kaesaman

et al. 2008

J of Applied Polymer Sci

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Epoxidized natural rubber (ENR) with a level of epoxide groups of 20 mol % was prepared via the performic epoxidation method. It was then used to blend with high-density polyethylene (HDPE) at various blend ratios. Three types of blend compatibilizers were prepared. These included a graft copolymer of HDPE and maleic anhydride (MA; i.e., HDPE-g-MA) and two types of phenolic modified HDPEs using phenolic resins SP-1045 and HRJ-10518 (i.e., PhSP-PE and PhHRJ-PE), respectively. We found that the blend with compatibilizer exhibited superior tensile strength, hardness, and set properties to that of the blend without compatibilizer. The ENR and HDPE interaction via the link of compatibilizer molecules was the polar functional groups of the compatibilizer with the oxirane groups in the ENR molecules. Also, another end of the compatibilizer molecules (i.e., HDPE segments) was compatibilizing with the HDPE molecules in the blend components. The blend with compatibilizer also showed smaller phase morphology than the blend without compatibilizer. Among the three types of the blend compatibilizer, HDPE-g-MA provided the blend with the greatest strength and hardness properties but the lowest set properties.

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Dynamically Vulcanized Thermoplastic Elastomer Blends of Natural Rubber and Polypropylene

Cited by 24 publications

References 8 publications

Influence type of natural rubber on properties of green biodegradable thermoplastic natural rubber based on poly(butylene succinate)

Influence type of natural rubber on properties of green biodegradable thermoplastic natural rubber based on poly(butylene succinate)

Dual phase continuity and phase inversion phenomena in natural rubber/ethylene vinyl acetate (EVA) copolymer blends

Thermoplastic elastomers based on epoxidized natural rubber and high‐density polyethylene blends: Effect of blend compatibilizers on the mechanical and morphological properties

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