Zobrazeno 1 - 10
of 115
pro vyhledávání: '"Naeimeh Bahri-Laleh"'
Autor:
Mohammadreza Mehdizadeh, Fereshteh Karkhaneh, Mehdi Nekoomanesh, Samahe Sadjadi, Mehrsa Emami, HamidReza Teimoury, Mehrdad Salimi, Miquel Solà, Albert Poater, Naeimeh Bahri-Laleh, Sergio Posada-Pérez
Publikováno v:
Polymers, Vol 15, Iss 23, p 4476 (2023)
The aim of this work is to investigate the influence of the ethanol content of adducts on the catalytic behavior of related Ziegler–Natta (ZN) catalysts in propylene homo- and copolymerizations (with 1-hexene comonomer) in terms of activity, isotac
Externí odkaz:
https://doaj.org/article/b75c6eca9c314d488f73be642d873983
Autor:
Ahad Hanifpour, Mahdi Hashemzadeh Gargari, Mohammad Reza Rostami Darounkola, Zahra Kalantari, Naeimeh Bahri-Laleh
Publikováno v:
Polyolefins Journal, Vol 8, Iss 1, Pp 31-40 (2021)
Herein a quenched-flow kinetic technique was applied to calculate the rate constants of 1-hexene and 1-octene oligomerization catalyzed by the Cp2ZrCl2 and Cp2HfCl2/MAO catalyst systems, and subsequently a mechanism for the higher α-olefin oligomeri
Externí odkaz:
https://doaj.org/article/801a822b643c45c49ab31c416d594299
Autor:
Fatemeh Malakoutikhah, Seyed Amin Mirmohammadi, Javad Javad Mokhtari Aliabad, Mohammad Atai, Samahe Sadjadi, Naeimeh Bahri-Laleh
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 33, Iss 5, Pp 445-458 (2020)
Hypothesis: Design and synthesis of self-curable solutions containing polyethylene glycol (PEG) and polyhedral oligomeric silsesquioxane (POSS) is a simple and economical method to enhance the physical and mechanical properties of biodegradable PEG.
Externí odkaz:
https://doaj.org/article/6f1e99a5f44447bca39fd38688a4d252
Publikováno v:
Catalysts, Vol 13, Iss 2, p 317 (2023)
The dichotomy between metal–organic frameworks (MOFs) and metal–organic cages (MOCs) opens up the research spectrum of two fields which, despite having similarities, both have their advantages and disadvantages. Due to the fact that they have cav
Externí odkaz:
https://doaj.org/article/81e9f347d27a4d68912f5d2ef4cdaeef
Publikováno v:
Catalysts, Vol 12, Iss 10, p 1130 (2022)
In this study, a mathematical model for the time evolution of molecular weight distribution (MWD) was developed. This temporal model is based on the well-known Ziegler–Natta polymerization mechanism and reaction kinetics by the parametric solving o
Externí odkaz:
https://doaj.org/article/c4017622e84c41a4bbf30fc85968b561
Publikováno v:
Polyolefins Journal, Vol 4, Iss 2, Pp 253-262 (2017)
The aim of this study was to examine the effect of catalyst doping on the performance of MgCl2. EtOH/TiCl4 catalyst system. In this regard, a series of undoped as well as FeCl3-doped catalysts was prepared and employed in 1-hexene polymerization. A m
Externí odkaz:
https://doaj.org/article/3f514a568ef74500b1cc02edcd646a31
Publikováno v:
علوم و تکنولوژی پلیمر, Vol 29, Iss 2, Pp 105-125 (2016)
Different chemical components in traditional Ziegler–Natta catalytic system include: (1) titanium and vanadium containing compounds, mostly TiCl4, as an active centre, (2) trialkylaluminium-based Lewis acid compounds, especially triethylaluminium,
Externí odkaz:
https://doaj.org/article/4d9f863f2a8e463bbb2ff218a47a3d75
Publikováno v:
Polyolefins Journal, Vol 3, Iss 1, Pp 11-22 (2016)
Due to easy availability of cheaper raw material and increase in new applications, the use of polyolefins in various industries is becoming a major priority. The Middle East region, on account of its vast oil and gas reserves has, in the last decade
Externí odkaz:
https://doaj.org/article/4f63c89a98e340699beb8ca879fa3b43
Publikováno v:
Polyolefins Journal, Vol 1, Iss 2, Pp 139-146 (2014)
In this study we have tested the ability of a standard DFT computational protocol to reproduce the experimentally obtained stereoselectivity of 26 different C2-symmetric zirconocene catalysts active in propylene polymerization. The catalysts were cho
Externí odkaz:
https://doaj.org/article/503c5d4940d241a2926645fc04844c12
Publikováno v:
Polyolefins Journal, Vol 1, Iss 1, Pp 33-41 (2014)
Primary MgCl2.3.3EtOH adduct (PCT1) was prepared by melt quenching method and then submitted into a programmed thermal dealcoholation project using a fluidized bed reactor. During thermal dealcoholation program, different MgCl2.nEtOH support samples
Externí odkaz:
https://doaj.org/article/8a4df9677c2c40a2a3dc5ffe69c1847f