Influence of plasticized UHMWPE on melt processability and supercritical CO2-assisted microcellular foaming of HDPE/UHMWPE blends

Bakshi, Ashok Kumar; Ghosh, Anup K.

doi:10.1007/s10853-022-07810-8

Cited by 5 publications

(2 citation statements)

References 46 publications

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“…Rheology is commonly used to study the phase behavior of blends and is also highly correlated with the melt strength. Figure a–c shows the storage modulus, loss modulus, and complex viscosity of TPEE/PEBAX blends with different blending ratios, respectively . According to Figure , the melt strength of the TPEE/PEBAX blends was significantly improved after the chain extension reaction occurs.…”

Section: Resultsmentioning

confidence: 93%

“…Figure 4a−c shows the storage modulus, loss modulus, and complex viscosity of TPEE/PEBAX blends with different blending ratios, respectively. 31 According to Figure 4, the melt strength of the TPEE/PEBAX blends was significantly improved after the chain extension reaction occurs. Melt strength had an important influence on the formation of cells in the foaming process.…”

Section: Rheological Properties Of Tpee/pebax Blendsmentioning

confidence: 96%

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Lightweight Antistatic Thermoplastic Elastomer Blend Foam: The Foaming Behavior and Mechanical Properties

Huang

et al. 2023

ACS Appl. Polym. Mater.

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A thermoplastic polyester elastomer (TPEE) has been widely used because of its excellent impact resistance and resilience, but its melt viscosity is too low to be used in the supercritical foaming. In addition, TPEE easily generates static electricity accumulation during processing, which has a risk of fire. Herein, a thermoplastic polyamide elastomer (PEBAX) with permanent antistatic properties was blended with TPEE, and triglycidyl isocyanurate (TGIC) was used as a chain extender to improve the compatibility and melt strength of the blends. Then, the TPEE/PEBAX blends were foamed by supercritical N2, and the cell structure and mechanical and antistatic properties of the blend foam were analyzed at a density of 0.1 ± 0.001 g/cm3. The results showed that when the blending ratio of TPEE/PEBAX was 70/30, the blend foam with a uniform cell structure had the most excellent mechanical properties. The resilience and elongation at break reached 83 and 850.3%, respectively. In addition, the surface resistivity and volume resistivity were 3.21 × 109 Ω and 7.35 × 109 Ω·cm, respectively, which were significantly lower than those of the IEC 61340 standard.

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Section: Resultsmentioning

confidence: 93%

Section: Rheological Properties Of Tpee/pebax Blendsmentioning

confidence: 96%

Lightweight Antistatic Thermoplastic Elastomer Blend Foam: The Foaming Behavior and Mechanical Properties

Huang

et al. 2023

ACS Appl. Polym. Mater.

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Influence of sequential melting and sintering process on morphology development and performance properties of ultra‐high molecular weight polyethylene/low‐density polyethylene blends

Shandilya,

Ghosh

2024

J of Applied Polymer Sci

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Blending ultra‐high molecular weight polyethylene (UHMWPE) with a low molecular weight polyolefin is a well‐established technique to improve its processability. The binary blends of UHMWPE and low‐density polyethylene (LDPE) were prepared with varying LDPE content (10%, 20%, 30%, 40%, and 50% by wt.) leading to the formation of a single polymer composite system (SPCS) as melting and sintering followed preferential stages during mixing. Interestingly, the sequence of either “melting followed by sintering” or “simultaneous sintering and melting” depends on the LDPE content in the blend, resulting in unique blend morphology. Separate melting peaks for the blend's constituents were observed in thermal characterization, showing the blend's immiscibility, while intermediate peaks showed moderate miscibility in the melt state. Due to the high entanglement density, UHMWPE retained a solid‐like structure and showed an intense viscous nature even above the melting point in rheological characterization. Typically, the UHMWPE samples are fabricated by boundary fusion between particles called sintering. At LDPE content higher than 30 wt.%, the sea island structure was visible in morphological analysis, and the preexisting cavities reduced the tensile modulus by 54% in the blend, along with decreased elongation at failure (250%–100%). Similarly, the flexural modulus was reduced by 34.7% in the blends, along with the decreased flexural strength. Interestingly, the decrease in performance properties occurred in two steps over the range of LDPE content. Thus, it was clear that 30 wt.% of LDPE in the UHMWPE/LDPE blend represented the critical concentration for controlling melting and sintering sequence to develop specified morphology and performance properties. These blends have the potential for biomedical application as well as for the development of foam products, which is the further scope of the present study.

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Development of in-situ nanofibrillated poly(butylene succinate)/polytetrafluoroethylene composites with elevated rheology, crystallization, and foaming performance

Xu,

Bing,

et al. 2024

J Mater Sci

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Influence of plasticized UHMWPE on melt processability and supercritical CO2-assisted microcellular foaming of HDPE/UHMWPE blends

Cited by 5 publications

References 46 publications

Lightweight Antistatic Thermoplastic Elastomer Blend Foam: The Foaming Behavior and Mechanical Properties

Lightweight Antistatic Thermoplastic Elastomer Blend Foam: The Foaming Behavior and Mechanical Properties

Influence of sequential melting and sintering process on morphology development and performance properties of ultra‐high molecular weight polyethylene/low‐density polyethylene blends

Development of in-situ nanofibrillated poly(butylene succinate)/polytetrafluoroethylene composites with elevated rheology, crystallization, and foaming performance

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