Results 51 to 60 of about 600,060 (165)

Advances in Polymeric Insulating Materials: Global Progress in These 10 Years

High Voltage, EarlyView.
ABSTRACT This journal, High Voltage, celebrates its 10th anniversary in 2026. To commemorate this significant milestone, this comprehensive special review article showcases the latest global research progress and cutting‐edge advancements in polymeric insulating materials, a critical component that underpins high‐voltage systems and is vital to modern ...
Yoshimichi Ohki, George Chen, Davide Fabiani, Reimund Gerhard, Mona Ghassemi, Stanislaw Gubanski, Shengtao Li, Ronald Plath, Roger Schurch, Yuriy Serdyuk, Gilbert Teyssedre   +10 more
wiley   +1 more source

MgCl2.6PhCH2OH – A new molecular adduct as support material for Ziegler–Natta catalyst: synthesis, characterization and catalytic activity

, 2011
Benzyl alcohol has been used to prepare a single phase MgC.6BzOH molecular adduct as a support for an ethylene polymerization catalyst (Ziegler catalyst).
P. R. Rajamohanan, Mathew, Renny, Gnanakumar, Edwin S., Deu S. Bhange, Chinnakonda S. Gopinath, Rajamohanan, P. R., Renny Mathew, T. G. Ajithkumar, Gopinath, Chinnakonda S., K. S. Thushara, Sumit Bhaduri, Bhaduri, Sumit, Ajithkumar, T. G., Thushara, K. S., Edwin S. Gnanakumar, Bhange, Deu S.   +15 more
core   +1 more source

An Investigation on Polymerization of Ethylene by Ziegler-Natta Catalyst in the Presence of a Promoter: Polymerization Behavior and Polymer Microstructure

Bulletin of Chemical Reaction Engineering & Catalysis, 2018
The effect of a halocarbon (ethyl chloride) as a promoter on a Ziegler-Natta catalyst composed of‌ T‌iCl4 (catalyst), AlEt3 (activator) and Mg(OEt)2 (support) in the polymerization of ethylene have been investigated.
Yaghoob Gholami, Majid Abdouss, Sadegh Abedi, Farhad Azadi, Pezhman Baniani, Maryam Arsalanfar   +5 more
doaj   +1 more source

Oxidative Stability and Rheological Features in Recycled Composites Based on Postconsumer Polypropylene and Antioxidant‐Loaded Silicas

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, Kalman B. Migler, Tamara Díez‐Rodríguez, María L. Cerrada, Ernesto Pérez   +4 more
wiley   +1 more source

Propylene Polymerization Performance with Ziegler-Natta Catalysts Combined with U-Donor and T01 Donor as External Donor

, 2022
In propylene (C3) polymerization with Ziegler-Natta catalyst, not only internal donor but also external donor is very important to make isotactic polypropylene (PP) with higher yield.
Hideo Funabashi, Padavattan Govindaswamy, Emiko Wada, Hiroyuki Kono, Toshiya Uozumi   +4 more
core   +1 more source

MgCl2 Support Preparation Techniques and Their Effects on Ziegler-Natta Catalysts Performance in Propylene Polymerization [PDF]

علوم و تکنولوژی پلیمر, 2013
A primary adduct of MgCl2.3.3EtOH (A0) was prepared by melt quenching and then it was further dealcoholated by thermal and chemical methods. In thermal dealcoholation, two different support samples with MgCl2.2.7EtOH (A1) and MgCl2.1.8EtOH (A2) formulas ...
Najmeh Hadian, Mehdi Nekoomanesh-Haghighi, Shokoofeh Hakim, Naeimeh Bahri-Laleh   +3 more
doaj   +1 more source

Facile Approach to Modulating Stereochemistry in Ring‐Opening Metathesis Polymerization of Cyclooctadiene

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

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  

Ti+4 determination in Ziegler–Natta polymerization catalysts via UV‒vis spectroscopy method [PDF]

Polyolefins Journal
The 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

Study of Ethylene Polymerization Kinetics by TiCl4/Mg(OC2H5)2 Catalyst and Determination of the Active Sites Concentration [PDF]

علوم و تکنولوژی پلیمر, 2008
Ethylene was polymerized in slurry phase over a TiCl4/Mg(OC2H5)2 catalyst activated by Al(C2H5)3. It was shown experimentally that mass transfer resistance has no effect on polymerization kinetics.
S. Hakim, M.M. Mortazavi
doaj   +1 more source