4.7 Article

Trouble-free combination of ?-alkenylmethyldichlorosilane copolymerization-hydrolysis chemistry and metallocene catalyst system for highly effective and efficient direct synthesis of long-chain-branched polypropylene

Related references

Note: Only part of the references are listed.
Article Engineering, Electrical & Electronic

Breakdown Performance of Polypropylene and Its Long-Chain Branched Blending for Metalized Film Capacitors

Zhaoyu Ran et al.

Summary: This article proposes a modification method for capacitors, which involves the physical blending of linear polypropylene (PP) and long-chain branched polypropylene (LCBPP) films. The addition of LCBPP can reduce the amorphous region and improve the dimensional stability of the PP film. However, it also introduces impurities and interfaces, resulting in increased polarization. This method provides a feasible idea for improving the high-temperature resistance of the film from the perspective of molecular and aggregate structure design.

IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION (2022)

Article Polymer Science

One-Pot Synthesis of High-Melt-Strength Isotactic Polypropylene Ionomers

Carlos R. Lopez-Barron et al.

Summary: A novel one-pot synthetic route has been developed to produce high melt strength isotactic polypropylene ionomers, improving the processability of the polymers. These ionomers exhibit high activity and isospecificity.

MACROMOLECULES (2022)

Article Physics, Applied

Breakdown strength improvement of polypropylene by introducing long-chain branched structures for film capacitors

Meng Xiao et al.

Summary: This paper proposes a method to improve the breakdown strength of polypropylene (PP) film at high temperatures by introducing long-chain branches (LCBs). The results show that LCBs increase the number of spherulites and refine the grains, reducing the weak areas in the films.

JOURNAL OF PHYSICS D-APPLIED PHYSICS (2022)

Article Polymer Science

Impact polypropylene copolymers containing multifold H-shape long-chain-branching structures: Synthesis and properties

Zhijian Zhang et al.

Summary: The use of omega-alkenylmethyldichlorosilane as a long-chain-branching agent in the fully implemented impact copolymerization of propylene has shown significant improvements in IPCs. The introduction of LCB structures has led to advancements in melt properties, phase morphology, melt crystallization, and mechanical properties of the copolymer, resulting in enhanced stiffness and toughness.

POLYMER (2022)

Article Chemistry, Multidisciplinary

Assessing 1,9-Decadiene/Ethylene Copolymerization with Ziegler- Natta Catalyst to Access Long Chain-Branched Polyethylene

Yang Liu et al.

Summary: The copolymerization of 1,9-decadiene/ethylene is a potential method for producing long chain-branched polyethylene using Ziegler-Natta catalysts. However, increasing the feed of 1,9-decadiene may result in gelation of the polymer.

ACS OMEGA (2021)

Article Engineering, Chemical

Industrial Adaptability of the Ziegler-Natta Catalyst-Friendly Synthesis of Long-Chain-Branched Polypropylene Based on ω-Alkenylmethyldichlorosilane-Assisted Propylene Polymerization

Kang Li et al.

Summary: The study applied omega-Alkenylmethyldichlorosilane-assisted propylene polymerization for the synthesis of long-chain-branched polypropylene (LCB-PP) in a liquid bulk polymerization process to verify its industrial adaptability. By introducing small amounts of hex-DCS, LCB-PPs with varied chain characteristics were successfully achieved, exhibiting corresponding melt properties.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

Article Materials Science, Multidisciplinary

In Situ Promotion of Long-Chain Branching in Polyethylene from Ziegler-Natta Catalysts

Xiuming Liu et al.

Summary: This paper introduced a in situ method for incorporating LCB structure into PE synthesized by Ziegler-Natta catalysts. By controlling the concentration of the bifunctional reagent during copolymerization, gel-free LCB-PEs with controlled amounts of LCB structure were successfully synthesized, showing improved extensional flow properties. Moreover, LCB-PEs demonstrated increased crystallization rates and crystallinities when compared to linear plain PE.

ACS APPLIED POLYMER MATERIALS (2021)

Article Multidisciplinary Sciences

Study of crystallization behaviour of electron beam irradiated polypropylene and high-density polyethylene

Petr Svoboda et al.

Summary: The study found that electron-beam irradiation has a significant impact on the crystallization process of polypropylene and high-density polyethylene, resulting in changes in crystallization kinetics parameters, including a decrease in the number of nucleation centres and growth rate of spherulites.

ROYAL SOCIETY OPEN SCIENCE (2021)

Article Engineering, Chemical

Blending Behavior of High-Degree Long-Chain-Branched Polypropylene Prepared by Ziegler-Natta Catalysis with Common Polypropylene

Kang Li et al.

Summary: Two high-degree long-chain-branched polypropylenes were prepared and melt-blended with common PP, diversifying properties and extending product range. Exceptions exist challenging composition dependency, with LCB structure's nucleation effect playing a significant role in the blends.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2021)

Article Engineering, Chemical

Assessing 1,9-Decadiene/Propylene Copolymerization with Ziegler-Natta Catalysts to Long-Chain-Branched Polypropylene

Yang Liu et al.

INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH (2020)

Review Chemistry, Multidisciplinary

Emerging Palladium and Nickel Catalysts for Copolymerization of Olefins with Polar Monomers

Chen Tan et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2019)

Article Engineering, Chemical

Controlled Synthesis, Characterization, and Flow Properties of Ethylene-Diene Copolymers

Chinmay Das et al.

MACROMOLECULAR REACTION ENGINEERING (2019)

Article Polymer Science

New approach to the synthesis of polymethylsilsesquioxane dendrimers

K. Boldyrev et al.

POLYMER (2019)

Review Chemistry, Multidisciplinary

Exploring Ethylene/Polar Vinyl Monomer Copolymerizations Using Ni and Pd alpha-Diimine Catalysts

Zhou Chen et al.

ACCOUNTS OF CHEMICAL RESEARCH (2018)

Review Chemistry, Inorganic & Nuclear

Recent developments in redox-active olefin polymerization catalysts

Jordan M. Kaiser et al.

COORDINATION CHEMISTRY REVIEWS (2018)

Article Chemistry, Physical

Redox-Controlled Polymerization and Copolymerization

Changle Chen

ACS CATALYSIS (2018)

Proceedings Paper Polymer Science

Characterizing Long Chain Branching in Polypropylene

Manoela E. Cangussu et al.

MACROMOLECULAR SYMPOSIA (2018)

Review Chemistry, Multidisciplinary

Late transition metal catalyzed α-olefin polymerization and copolymerization with polar monomers

Lihua Guo et al.

MATERIALS CHEMISTRY FRONTIERS (2017)

Article Chemistry, Multidisciplinary

Direct Synthesis of Functionalized High-Molecular-Weight Polyethylene by Copolymerization of Ethylene with Polar Monomers

Shengyu Dai et al.

ANGEWANDTE CHEMIE-INTERNATIONAL EDITION (2016)

Review Engineering, Chemical

A Comprehensive Review on Controlled Synthesis of Long-Chain Branched Polyolefins: Part 1, Single Catalyst Systems

Pingwei Liu et al.

MACROMOLECULAR REACTION ENGINEERING (2016)

Review Chemistry, Multidisciplinary

(α-Diimine)palladium catalyzed ethylene polymerization and (co)polymerization with polar comonomers

Lihua Guo et al.

SCIENCE CHINA-CHEMISTRY (2015)

Article Polymer Science

Modeling of Synthesis and Flow Properties of Propylene-Diene Copolymers

Chinmay Das et al.

MACROMOLECULES (2014)

Review Chemistry, Multidisciplinary

Synthesis of functional 'polyolefins': state of the art and remaining challenges

Nicole M. G. Franssen et al.

CHEMICAL SOCIETY REVIEWS (2013)

Article Polymer Science

New Curable Propylene Copolymers Containing Tert-Butoxysilane Side Groups

Susanna Zimmer et al.

MACROMOLECULAR RAPID COMMUNICATIONS (2013)

Article Chemistry, Multidisciplinary

Synthesis of Functional Polyolefins Using Cationic Bisphosphine Monoxide-Palladium Complexes

Brad P. Carrow et al.

JOURNAL OF THE AMERICAN CHEMICAL SOCIETY (2012)

Review Chemistry, Multidisciplinary

Coordination Polymerization of Polar Vinyl Monomers by Single-Site Metal Catalysts

Eugene Y. -X. Chen

CHEMICAL REVIEWS (2009)

Review Chemistry, Multidisciplinary

Coordination-Insertion Copolymerization of Fundamental Polar Monomers

Akifumi Nakamura et al.

CHEMICAL REVIEWS (2009)

Article Polymer Science

Imino-Indolate Half-Titanocene Chlorides: Synthesis and Their Ethylene (Co-)Polymerization

Weiwei Zuo et al.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY (2009)

Article Polymer Science

Precise control of microstructure of functionalized polypropylene synthesized by the ansa-zirconocene/MAO catalysts

Hideaki Hagihara et al.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY (2008)

Article Engineering, Chemical

Strain hardening in polypropylenes and its role in extrusion foaming

P Spitael et al.

POLYMER ENGINEERING AND SCIENCE (2004)

Article Engineering, Chemical

Long chain branching in polyethylene from the Phillips chromium catalyst

MP McDaniel et al.

POLYMER REACTION ENGINEERING (2003)

Review Polymer Science

Recent developments in the synthesis of functional poly(olefin)s

MJ Yanjarappa et al.

PROGRESS IN POLYMER SCIENCE (2002)

Article Polymer Science

Synthesis of branched polypropylene by a reactive extrusion process

D Graebling

MACROMOLECULES (2002)

Article Polymer Science

Long chain branched isotactic polypropylene

WQ Weng et al.

MACROMOLECULES (2002)

Article Polymer Science

Long-chain-branched polyethene by the copolymerization of ethene and nonconjugated α,ω-dienes

E Kokko et al.

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY (2001)

Review Chemistry, Multidisciplinary

Copolymerization of polar monomers with olefins using transition-metal complexes

LS Boffa et al.

CHEMICAL REVIEWS (2000)