Results 21 to 30 of about 1,233 (214)

Interfacial nucleation in iPP/PB-1 blends promotes the formation of polybutene-1 trigonal crystals [PDF]

open access: green, 2018
The formation of trigonal Form I\ub4 crystals of polybutene-1 (PB-1) directly from melt has drawn much attention in past decades. In this study, we investigate the fractionated crystallization behavior of PB-1 within droplets formed by blending PB-1 with
Zefan Wang   +7 more
openalex   +4 more sources

Promotion of Self-Nucleation with Latent Form I Nuclei in Polybutene-1 and Its Copolymer [PDF]

open access: green, 2018
The formation of form I nuclei of polybutene-1 (PB-1) and its copolymer with polyethylene (PB1-ran-PE) has been studied by means of modified self-nucleation protocols.
Zefan Wang   +4 more
openalex   +6 more sources

The influence of branching efficiency on the rheology and morphology of melt state long chain branched polypropylene/polybutene-1 blends [PDF]

open access: yesPolyolefins Journal, 2019
In this study, the compatibility of the blends of polypropylene (PP) and polybutene-1(PB-1) homopolymer before and after long chain branching process were studied.
Ali Foroozan   +2 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

Applicazione della meccanica della frattura viscoelastica alla previsione della vita di tubi in polibutene

open access: yesFracture and Structural Integrity, 2013
Isotactic polybutene-1 (i-PB1) is a polymer used for the manufacturing of pressurized pipes. In this work two grades of i-PB1 with a different degree of isotacticity have been investigated; they have been supplied by Basell Polyolefins. Fracture tests
Luca Andena   +2 more
doaj   +3 more sources

Validation of the poke-flow technique combined with simulations of fluid flow for determining viscosities in samples with small volumes and high viscosities [PDF]

open access: yesAtmospheric Measurement Techniques, 2015
Viscosity in particles consisting of secondary organic material (SOM) has recently become an area of research focus, since information on viscosity is needed to predict the environmental impacts of SOM particles. Recently Renbaum-Wolff et al.
J. W. Grayson   +3 more
doaj   +1 more source

Applicazione della meccanica della frattura viscoelastica alla previsione della vita di tubi in polibutene [PDF]

open access: yes, 2007
Il Polibutene-1 isotattico (i-PB1) è un materiale polimerico usato per la produzione di tubi per il trasporto di fluidi in pressione. In questo lavoro si sono studiati due tipi di i-PB1 prodotti da Basellche differiscono per grado di isotatticità.Si sono
Luca Andena   +2 more
core   +3 more sources

Computational Predictions for Boger Fluids and Circular Contraction Flow under Various Aspect Ratios

open access: yesFluids, 2020
This work puts forward a modeling study contrasted against experimental, with focus on abrupt circular contraction flow of two highly-elastic constant shear-viscosity Boger fluids, i.e., a polyacrylamide dissolved in corn-syrup PAA/CS (Fluid-1) and a ...
J. Esteban López-Aguilar   +1 more
doaj   +1 more source

Fractionated and Confined Crystallization of Polybutene-1 in Immiscible Polypropylene/Polybutene-1 Blends

open access: yesChinese Journal of Polymer Science, 2018
In this work, the crystallization of immiscible polypropylene (PP)/polybutene-1 (PB) blends, in particular the effect of crystal morphology of PP (HTC, high Tm component) on the subsequent crystallization behavior of PB (LTC, low Tm component) was studied.
Yao Xu   +3 more
openaire   +2 more sources

Crystallization of Polymers from Solution under ShearingStress III Polybutene-1 [PDF]

open access: yes, 1968
It was shown that the fibrous crystals of isotactic polybutene-l crystallized from solution under shearing stress are also composed of the central threads with an extended chain character and the epitaxally deposited lamellae with a folded chain ...
Fujiwara, Masahiko   +3 more
core   +1 more source

Home - About - Disclaimer - Privacy