Results 21 to 30 of about 10,132 (279)

Development of technology for producing biodegradable hybrid composites based on polyethylene, starch, and monoglycerides

open access: yesТонкие химические технологии, 2021
Objectives. This work aimed to develop technology to produce biodegradable hybrid composite (BHC) films based on low-density polyethylene (LDPE) 115030-070 and thermoplastic starches (TPS) of various origins (corn, pea, and rice), with distilled ...
I. Yu. Vasilyev   +3 more
doaj   +1 more source

Polyolefin nanocomposites based on metallocene catalysts

open access: yes, 2021
In recent years polyolefin nanocomposites are of great interest because of their high potential as materials with novel properties [1,2]. The properties of the nanocomposites are not only influenced by the kind of fillers but also by the microstructure ...
Walter Kaminsky*
core   +1 more source

High Speed Photography for Manuscript "On the Method of Pulse-Heated Analysis of Solid Reactions (PHASR) for Polyolefin Pyrolysis"

open access: yes, 2020
This text file contains descriptions of all videos submitted as Supporting Information for the paper entitled "On the Method of Pulse-Heated Analysis of Solid Reactions (PHASR) for Polyolefin Pyrolysis." Original videos were taken using a high-speed ...
Dauenhauer, Paul   +3 more
core   +1 more source

Recent advances in high-temperature fractionation of polyolefins

open access: yes, 2022
S.77-140The synthesis and characterization of polyolefins continues to be one of the most important areas for academic and industrial research. One consequence of the development of new ""tailor-made"" polyolefins is the need for new and improved ...
Macko, Tibor   +2 more
core   +1 more source

Polyolefin and olefin production in Iran: Current and future capacities [PDF]

open access: yesPolyolefins Journal, 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.
Naeimeh Bahri-Laleh   +3 more
doaj   +1 more source

Highly Efficient Polyolefin Hydrogenolysis Enabled by a Single-Site Organo-Tantalum Catalyst on a Super-Acidic Support

open access: yes, 2023
The novel electrophilic organo-tantalum catalyst AlS/TaNp () (Np = neopentyl) is prepared by chemisorption of the alkylidene Ta(CHtBu)Np onto highly Brønsted acidic sulfated alumina (AlS). The proposed catalyst structure is supported by EXAFS, XANES, ICP,
Alexander H., Mason   +7 more
core   +1 more source

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

open access: yesPolyolefins 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   +3 more
doaj   +1 more source

Modelling the catalyst fragmentation pattern in relation to molecular properties and particle overheating in olefin polymerization [PDF]

open access: yesPolyolefins Journal, 2014
A two-dimensional single particle finite element model was used to examine the effects of particle fragmental pattern on the average molecular weights, polymerization rate and particle overheating in heterogeneous Ziegler-Natta olefin polymerization.
Mohsen Najafi   +2 more
doaj   +1 more source

Unsymmetrical Strategy on α-Diimine Nickel and Palladium Mediated Ethylene (Co)Polymerizations

open access: yesMolecules, 2022
Among various catalyst design strategies used in the α-diimine nickel(II) and palladium(II) catalyst systems, the unsymmetrical strategy is an effective and widely utilized method.
Xin Ma, Yixin Zhang, Zhongbao Jian
doaj   +1 more source

Enhanced Formation of Dicarboxylic Acids in the Catalytic Oxidation of Polyethylene With O2 and NOx

open access: yesAngewandte Chemie, EarlyView.
The oxidation of polyethylene in the presence of a mixture of O2 and NOx and with Cu2+/V5+ as catalyst yields ∼51 mol% diacids, while retaining ∼80 mol% of the carbon in the oil fraction. The developed method is robust and tolerates several polymer types as well as impurities.
Tom J. Smak   +3 more
wiley   +2 more sources

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