Results 51 to 60 of about 117,309 (167)
Polymer Engineering &Science, Volume 66, Issue 10, Page 7468-7482, October 2026.Role of antioxidant supported on MCM‐41 and nano‐silica in enhancing oxidation induction time (OIT) and nucleation performance. ABSTRACT Plastic recycling efforts are hindered by the reduction of material properties in recyclates stemming from oxidative degradation of their polymeric chains.
Enrique Blázquez‐Blázquez +4 more
wiley +1 more source
Ti+4 determination in Ziegler–Natta polymerization catalysts via UV‒vis spectroscopy method [PDF]
Polyolefins JournalThe determination of Ti+4 in Ziegler–Natta catalysts is highly relevant for industrial plants that use Ziegler–Natta (ZN) catalysts based on TiCl4 as a source of titanium.
Jonas Biagini, Joao Henrique dos Santos
doaj +1 more source
How can pH value during catalyst preparation affect the performance of vanadium-modified (SiO2/MgO/ MgCl2)•TiClx Ziegler-Natta polyethylene catalysts [PDF]
Polyolefins Journal, 2018 Vanadium-modified (SiO2/MgO/MgCl2)•TiClx Ziegler-Natta catalysts were prepared through co-impregnation of water-soluble magnesium and vanadium salts under different pH values.
Ting Fu +5 more
doaj +1 more source
Journal of Polymer Science, Volume 64, Issue 19, Page 4037-4046, 1 October 2026.The stereochemistry of polybutadiene made by ring‐opening metathesis polymerization (ROMP) evolves both during and after polymerization, as secondary metathesis shifts cis‐rich kinetic products toward trans‐rich equilibrium compositions. By tuning catalyst identity, additives, temperature, and reaction time, polybutadienes with 28%–80% trans content ...
Amira S. Eldin, Michael D. Schulz
wiley +1 more source
Historical and Philosophical Remarks on Ziegler-Natta Catalysts
, 1999 Part 1 outlines the complex, parallel historical evolution of Ziegler-Natta catalysts and related problems. In Part 2, as a general method of inquiry, chemical language and discourse are analyzed, at first to clarify chemists’ epistemic views and the ...
HYLE Publications, Luigi Cerruti
core +1 more source
Small Science, Volume 6, Issue 10, October 2026.Conductive high‐density poly(ethylene) (HDPE) is introduced as a new material platform for additive manufacturing electrochemistry, expanding the limited polymer feedstocks currently available. A solvent‐free thermal compounding process incorporating 40 wt% carbon black produced a flexible, plasticizer‐free filament with a low bulk resistivity of 16.4 (
Muhzamil A. Khan +9 more
wiley +1 more source
, 2016 Living Ziegler−Natta Cyclopolymerization of Nonconjugated Dienes: New Classes of Microphase-Separated Polyolefin Block Copolymers via a Tandem Polymerization/Cyclopolymerization ...
Kumudini C. Jayaratne (2443618) +3 more
core +2 more sources
Sixtieth Anniversary of Ziegler-Natta Catalysts and Stereospecific Polymerization [PDF]
Kemija u Industriji, 2015 This review article highlights the history of the discoveries of organometallic catalysts and stereospecific polymerization of α-olefins, dienes and a number of vinyl monomers by Karl Ziegler and Giulio Natta sixty years ago, their developments and ...
Janović Z. , Veksli Z.
doaj
Organic Nanoparticles as Fragmentable Support for Ziegler-Natta Catalysts
, 2015 A fragmentable support material for Ziegler-Natta catalysts is presented based on micrometer-sized aggregates of polystyrene nanoparticles. Hydroxyl anchoring groups are introduced by copolymerization of hydroxymethylstyrene in emulsion process to ...
Sven Nietzel +16 more
core +1 more source
Study on the Effects of Temperature, Time and the Policy of Prepolymerization on Particle Morphology in Propylene Slurry Polymerization with Heterogeneous Ziegler-Natta Catalysts [PDF]
علوم و تکنولوژی پلیمر, 2007 The effects of temperature, time and the strategy of prepolymerization were studied on the morphology of polypropylene particles. propylene polymerization was carried out in slurry phase using 4th generation of Ziegler-Natta Catalyst, cyclohexylmethyl ...
G. Pircheraghi +2 more
doaj +1 more source