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An improved method for the high isotacticity measurement of polybutene-1

open access: yesPolymer Testing, 2021
High isotactic polybutene-1 (HiPB) plays important roles in presenting outstanding resistance to creep and crack at high temperature. Therefore, rapid and accurate measurement of the HiPB is extremely important for both synthesis and application of ...
Weiping Zheng   +4 more
doaj   +1 more source

Synthesis of Isotactic Polybutene-1 with Ziegler-Natta Catalyst [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2022
Hypothesis: Butene-1 is in excess in the polyolefin plants of Iran. Considering the properties of isotactic polybutene-1, including high creep and environmental stress cracking resistances, excellent elastic reversibility and good chemical abrasion ...
shokoufeh Hakim   +2 more
doaj   +1 more source

Polymerization of Ethylene Using α-Diimine Nickel Catalyst [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2013
The late transition metal catalysts based on end group of transition metals in the periodic table like Ni, Fe, Co, Pd, Pt were developed rapidly in polyolefin industrial productions.
Hassan Arabi1   +4 more
doaj   +1 more source

Accelerated crystallization and crystal-crystal transition of PB induced by PP with optimized content

open access: yesPolymer Testing, 2023
Isotactic polybutene-1 (PB)/isotactic polypropylene (PP) blends, typical crystalline/crystalline polymer blends with low-melting-temperature (Tm) PB and high-Tm PP, exhibit complicated interactions between their components in both molten and solid states.
Xiangjie Yan   +5 more
doaj   +1 more source

Competitive particle growth at different conditions of oligo-micelle formation in hydro-alcoholic solution of anionic double-chain emulsifier via batch emulsion polymerization of vinyl chloride [PDF]

open access: yesPolyolefins Journal, 2019
The condition of oligo-micelle formation of sodium di-isodecyl sulfosuccinate (SDIDS) emulsifier in hydroalcoholic solutions is used to study particle formation of vinyl chloride emulsion polymerization in a batch reactor.
Aliasghar Mahdavi Akerdi   +1 more
doaj   +1 more source

Estimation of pyrolysis product of LDPE degradation using different process parameters in a stirred reactor [PDF]

open access: yesPolyolefins Journal, 2015
Pyrolysis of low density polyethylene (LDPE) by equilibrium fluid catalytic cracking (FCC) was studied in a stirred reactor under different process parameters.
Mehrdad Seifali Abbas-Abadi   +3 more
doaj   +1 more source

Compositional Determination of Vinyl Acetate/Vinyl Benzoate Copolymer by Fourier Transform Infrared Spectroscopy [PDF]

open access: yesعلوم و تکنولوژی پلیمر, 2015
Relating polymer structure to its performance properties is a primary motivation for determining the structure of a polymer chain. If a polymer chain is completely characterized and the structural basis of its properties is known, one can optimize and ...
Poorya Bigdeli   +2 more
doaj   +1 more source

Interfacial structure and properties of isotactic polybutene-1/polyethylene blends

open access: yese-Polymers, 2022
Polymer blending is one of the most economical and effective techniques for achieving products with high comprehensive performances. However, the immiscibility between polymers results in a weak interface, which is typically the position where material ...
Niu Xiu   +5 more
doaj   +1 more source

High-temperature creep behaviors of polybutene-1 with different chain microstructure and molecular weight

open access: yesPolymer Testing, 2023
The creep resistance of polymer determines the dimensional stability of product under stress. The isotactic polybutene-1 (iPB) with outstanding high-temperature creep resistance and stress-crack resistance is applied widely in the field of hot-water ...
Yuanjin Zhao   +3 more
doaj   +1 more source

TRANSMISSION ELECTRON MICROSCOPY FOR THE DIRECT ANALYSIS OF FIBRIN CLOT STRUCTURE [PDF]

open access: yesBiotechnologia Acta, 2023
The aim of our study was to compare the structure of clots formed as a result of thrombin-induced fibrin polymerization in the presence or absence of monoclonal fibrin-specific antibodies fragments as factors that change the clot structure.
Y.P. Kucheriavyi,, I.D. Panas
doaj   +1 more source

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