B(C6F5)3 grafted inorganic fillers for supported titanium-catalyzed synthesis of UHMWPE composites

Bi, Zhengxing; Zhang, Zhao; Bahri-Laleh, Naeimeh; Wang, Quan; Zou, Chen

doi:10.1039/d4py00096j

Polym. Chem.

2024

DOI: 10.1039/d4py00096j

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B(C₆F₅)₃ grafted inorganic fillers for supported titanium-catalyzed synthesis of UHMWPE composites

Zhengxing Bi,

Zhao Zhang,

Naeimeh Bahri-Laleh

et al.

Abstract: The preparation of polyolefin composites using inorganic fillers is one of the most important strategies for cost reduction and property enhancement. The use of inorganic filler-supported catalysts for in-situ polymerization...

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Cited by 2 publications

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Synthesis of low-entangled UHMWiPP using Hf-pyridyl amido catalyst activated by trityl tetrakis (pentafluorophenyl) borate

Alsubhi,

Romano,

Zhou

et al. 2024

European Polymer Journal

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Synthesis of low-entangled UHMWiPP using Hf-pyridyl amido catalyst activated by trityl tetrakis (pentafluorophenyl) borate

Alsubhi,

Romano,

Zhou

et al. 2024

European Polymer Journal

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Preparation of Toughened Bimodal Ultrahigh-Molecular-Weight Polyethylene by a Coanchoring Strategy

Ma,

Wang,

Pang

et al. 2024

ACS Appl. Polym. Mater.

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Ultrahigh-molecular-weight polyethylene (UHMWPE) is an important engineering plastic widely used in many areas such as artificial joint pads, bulletproof vests, and high-performance fibers. However, the easily disordered entanglement of its molecular chain makes it difficult to process using traditional thermoplastic processing techniques. Traditional strategies to improve its processing fluidity are usually complex and detrimental to its mechanical properties. In this contribution, a salicylaldimine titanium catalyst capable of generating UHMWPE and a pyridine(diimine) iron catalyst capable of generating low-molecular-weight polyethylene are coanchored on solid supports (SiO 2 , MgO, TiO 2 ). The coanchored heterogeneous catalysts are highly active in ethylene polymerization, producing toughened bimodal UHMWPE with improved tensile toughness and excellent rheological properties. This coanchoring strategy enables a great balance between the mechanical strength and the processing rheological properties of UHMWPE. Most importantly, this type of UHMWPE exhibited an excellent gas barrier performance, extrusion performance, thermal conductivity, and photodegradation performance.

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B(C₆F₅)₃ grafted inorganic fillers for supported titanium-catalyzed synthesis of UHMWPE composites

Abstract: The preparation of polyolefin composites using inorganic fillers is one of the most important strategies for cost reduction and property enhancement. The use of inorganic filler-supported catalysts for in-situ polymerization...

Cited by 2 publications

References 49 publications

Synthesis of low-entangled UHMWiPP using Hf-pyridyl amido catalyst activated by trityl tetrakis (pentafluorophenyl) borate

Synthesis of low-entangled UHMWiPP using Hf-pyridyl amido catalyst activated by trityl tetrakis (pentafluorophenyl) borate

Preparation of Toughened Bimodal Ultrahigh-Molecular-Weight Polyethylene by a Coanchoring Strategy

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