Results 1 to 10 of about 15,592 (253)

Synthesis of (Ind)2ZrCl2 Catalyst for Copolymerization of Ethylene and Propylene: Parameters Effect on Productivity [PDF]

علوم و تکنولوژی پلیمر, 2010
Bis(indenyl)zirconium dichloride as a catalyst was synthesized using a modified method at the room temperature. Polymerization of ethylene and copolymerization of ethylene and propylene were carried out by this metallocene catalyst. Ethylene propylene (P/
S. Ahmadjo, H. Arabi, M. Nekoomanesh, G.H. Zohuri, M. Mortazavi   +4 more
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Quasi-alternating copolymerization of oxiranes driven by a benign acetate-based catalyst

Communications Chemistry, 2023
Alternating copolymers are distinctly unique in comparison with other copolymers. Herein, an in-depth investigation of the oxyanionic ring-opening copolymerization of propylene oxide (PO) and allyl glycidyl ether (AGE) from benzyl alcohol (BnOH ...
Charlotte Fornaciari, Vincent Lemaur, Dario Pasini, Olivier Coulembier   +3 more
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Stereoselective Copolymerization of Olefin with Polar Monomers to Access Stereoregular Functionalized Polyolefins

Organic Materials, 2022
Introducing polar functionalities to polyolefins such as polyethylene and polypropylene is highly desirable for improving physical properties of the otherwise non-polar material.
Hongliang Mu, Zhongbao Jian
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An Investigation of the Organoborane/Lewis Base Pairs on the Copolymerization of Propylene Oxide with Succinic Anhydride

Molecules, 2020
The copolymerization of biorenewable succinic anhydride (SA) with propylene oxide (PO) is a promising way to synthesize biodegradable aliphatic polyesters.
Lan-Fang Hu, Dan-Jing Chen, Jia-Liang Yang, Xing-Hong Zhang   +3 more
doaj   +1 more source

Mathematical modeling the effect of catalyst initial shape and the crack pattern in olefin copolymerization [PDF]

Polyolefins Journal, 2015
A two-dimensional (2D) single particle model for the copolymerization of propylene-ethylene with heterogeneous Ziegler-Natta catalyst is developed. The model accounts for the effects of the initial shape of the catalyst and carck/ pore patterns on the ...
Marzieh Nouri, Mahmoud Parvazinia, Hassan Arabi, Mohsen Najafi   +3 more
doaj   +1 more source

Regioselective Photooxidation of Citronellol: A Way to Monomers for Functionalized Bio-Polyesters

Frontiers in Chemistry, 2020
Dye-sensitized photooxygenation reaction of bio-based double bond-containing substrates is proposed as sustainable functionalization of terpenes and terpenoids to transform them into polyoxygenated compounds to be employed for the synthesis of new bio ...
Deianira Lanteri, Silvia Quattrosoldi, Michelina Soccio, Andrea Basso, Dario Cavallo, Andrea Munari, Renata Riva, Nadia Lotti, Lisa Moni   +8 more
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Renewable Polymers Derived from Limonene

ChemEngineering, 2023
Renewable natural and synthetic basic substances can be used to produce biodegradable polymers. Several methods of the polymerization of terpene limonene have been evaluated.
Roman Aleksandrovich Lyubushkin, Natalia Igorevna Cherkashina, Dar’ya Vasil’yevna Pushkarskaya, Dar’ya Sergeyevna Matveenko, Alexander Sergeevich Shcherbakov, Yuliya Sergeevna Ryzhkova   +5 more
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Effect of Increased Ionic Liquid Uptake via Thermal Annealing on Mechanical Properties of Polyimide-Poly(ethylene glycol) Segmented Block Copolymer Membranes

Molecules, 2021
Proton exchange membranes (PEMs) suffer performance degradation under certain conditions—temperatures greater than 80 °C, relative humidity less than 50%, and water retention less than 22%.
Gokcen A. Ciftcioglu, Curtis W. Frank
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Synthesis and properties of fluorinated copolymerized polyimide films [PDF]

Polímeros, 2020
Two series of fluorinated copolymerized polyimide films with different dianhydride ratios were prepared via the conventional two-step method by using 4,4-oxydianiline(ODA) as the diamine monomer, 4,4'-(hexafluoroisopropylidene) diphthalic anhydride(6FDA),
Chuanhao Cao, Lizhu Liu, Xinyu Ma, Xiaorui Zhang, Tong Lv   +4 more
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Nanostructure Engineering via Intramolecular Construction of Carbon Nitride as Efficient Photocatalyst for CO₂ Reduction

Nanomaterials, 2021
Light-driven heterogeneous photocatalysis has gained great significance for generating solar fuel; the challenging charge separation process and sluggish surface catalytic reactions significantly restrict the progress of solar energy conversion using a ...
Muhammad Sohail, Tariq Altalhi, Abdullah G. Al-Sehemi, Taha Abdel Mohaymen Taha, Karam S. El-Nasser, Ahmed A. Al-Ghamdi, Mahnoor Boukhari, Arkom Palamanit, Asif Hayat, Mohammed A. Amin, Wan Izhan Nawawi Bin Wan Ismail   +10 more
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