Miscibility of hexene-LLDPE and LDPE blends: Influence of branch content and composition distribution

Ibnelwaleed A. Hussein; Tayyab Hameed; Basel F. Abu Sharkh; Khaled Mezghani

doi:10.1016/S0032-3861(03)00437-3

Miscibility of hexene-LLDPE and LDPE blends: Influence of branch content and composition distribution

Ibnelwaleed A. Hussein^*, Tayyab Hameed, Basel F. Abu Sharkh, Khaled Mezghani

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

69 Scopus citations

Abstract

The influences of branch content (BC) and composition distribution (CD) of hexene linear low-density polyethylene (LLDPE) on its miscibility with low-density polyethylene (LDPE) were investigated. Ziegler-Natta (ZN) and metallocene-LLDPE (m-LLDPE) were used to study the melt miscibility using rheological tools. Dynamic, steady shear and transient measurements were carried out in an ARES rheometer at 190 °C. The miscibility was revealed by the dependence of their η_o, η′(ω), G′ and N₁(γ̇) on blend composition. The CD of LLDPE has influenced its miscibility with LDPE. The ZN-LLDPE blend with LDPE was found to be more miscible than an m-LLDPE of the same M_w and similar BC. On the other hand, a high-BC m-LLDPE (32.2 CH₃/1000 C) was found to be more miscible with LDPE than a low-BC m-LLDPE (14.4 CH₃/1000 C) of the same M_w and MWD. The high-BC m-LLDPE blends with LDPE were partially miscible and immiscibility is likely to develop in LDPE-rich blends. Agreement was observed between the measured rheology and theoretical predictions of Einstein, Scholz et al., Palierne, and Bousmina emulsion models.

Original language	English
Pages (from-to)	4665-4672
Number of pages	8
Journal	Polymer
Volume	44
Issue number	16
DOIs	https://doi.org/10.1016/S0032-3861(03)00437-3
State	Published - 10 Jul 2003

Bibliographical note

Funding Information:
Financial support for this project was provided by KFUPM under project # CHE/Rheology/223. Authors are thankful to Mr Willy Leysen of ExxonMobil, Belgium for providing polyethylene samples. We are also grateful to Dr Naseem Akhtar for his help with the GPC characterization. Also, Tayyab Hameed would like to thank KFUPM for the MS research assistantship.

Keywords

Branch content
Composition distribution
Polyethylene blend miscibility

ASJC Scopus subject areas

Organic Chemistry
Polymers and Plastics
Materials Chemistry

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10.1016/S0032-3861(03)00437-3

Cite this

@article{c380b38abebf4a4094c064180e9c971b,

title = "Miscibility of hexene-LLDPE and LDPE blends: Influence of branch content and composition distribution",

abstract = "The influences of branch content (BC) and composition distribution (CD) of hexene linear low-density polyethylene (LLDPE) on its miscibility with low-density polyethylene (LDPE) were investigated. Ziegler-Natta (ZN) and metallocene-LLDPE (m-LLDPE) were used to study the melt miscibility using rheological tools. Dynamic, steady shear and transient measurements were carried out in an ARES rheometer at 190 °C. The miscibility was revealed by the dependence of their ηo, η′(ω), G′ and N1({\.γ}) on blend composition. The CD of LLDPE has influenced its miscibility with LDPE. The ZN-LLDPE blend with LDPE was found to be more miscible than an m-LLDPE of the same Mw and similar BC. On the other hand, a high-BC m-LLDPE (32.2 CH3/1000 C) was found to be more miscible with LDPE than a low-BC m-LLDPE (14.4 CH3/1000 C) of the same Mw and MWD. The high-BC m-LLDPE blends with LDPE were partially miscible and immiscibility is likely to develop in LDPE-rich blends. Agreement was observed between the measured rheology and theoretical predictions of Einstein, Scholz et al., Palierne, and Bousmina emulsion models.",

keywords = "Branch content, Composition distribution, Polyethylene blend miscibility",

author = "Hussein, \{Ibnelwaleed A.\} and Tayyab Hameed and \{Abu Sharkh\}, \{Basel F.\} and Khaled Mezghani",

note = "Funding Information: Financial support for this project was provided by KFUPM under project \# CHE/Rheology/223. Authors are thankful to Mr Willy Leysen of ExxonMobil, Belgium for providing polyethylene samples. We are also grateful to Dr Naseem Akhtar for his help with the GPC characterization. Also, Tayyab Hameed would like to thank KFUPM for the MS research assistantship. ",

year = "2003",

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doi = "10.1016/S0032-3861(03)00437-3",

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pages = "4665--4672",

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T1 - Miscibility of hexene-LLDPE and LDPE blends

T2 - Influence of branch content and composition distribution

AU - Hussein, Ibnelwaleed A.

AU - Hameed, Tayyab

AU - Abu Sharkh, Basel F.

AU - Mezghani, Khaled

N1 - Funding Information: Financial support for this project was provided by KFUPM under project # CHE/Rheology/223. Authors are thankful to Mr Willy Leysen of ExxonMobil, Belgium for providing polyethylene samples. We are also grateful to Dr Naseem Akhtar for his help with the GPC characterization. Also, Tayyab Hameed would like to thank KFUPM for the MS research assistantship.

PY - 2003/7/10

Y1 - 2003/7/10

N2 - The influences of branch content (BC) and composition distribution (CD) of hexene linear low-density polyethylene (LLDPE) on its miscibility with low-density polyethylene (LDPE) were investigated. Ziegler-Natta (ZN) and metallocene-LLDPE (m-LLDPE) were used to study the melt miscibility using rheological tools. Dynamic, steady shear and transient measurements were carried out in an ARES rheometer at 190 °C. The miscibility was revealed by the dependence of their ηo, η′(ω), G′ and N1(γ̇) on blend composition. The CD of LLDPE has influenced its miscibility with LDPE. The ZN-LLDPE blend with LDPE was found to be more miscible than an m-LLDPE of the same Mw and similar BC. On the other hand, a high-BC m-LLDPE (32.2 CH3/1000 C) was found to be more miscible with LDPE than a low-BC m-LLDPE (14.4 CH3/1000 C) of the same Mw and MWD. The high-BC m-LLDPE blends with LDPE were partially miscible and immiscibility is likely to develop in LDPE-rich blends. Agreement was observed between the measured rheology and theoretical predictions of Einstein, Scholz et al., Palierne, and Bousmina emulsion models.

AB - The influences of branch content (BC) and composition distribution (CD) of hexene linear low-density polyethylene (LLDPE) on its miscibility with low-density polyethylene (LDPE) were investigated. Ziegler-Natta (ZN) and metallocene-LLDPE (m-LLDPE) were used to study the melt miscibility using rheological tools. Dynamic, steady shear and transient measurements were carried out in an ARES rheometer at 190 °C. The miscibility was revealed by the dependence of their ηo, η′(ω), G′ and N1(γ̇) on blend composition. The CD of LLDPE has influenced its miscibility with LDPE. The ZN-LLDPE blend with LDPE was found to be more miscible than an m-LLDPE of the same Mw and similar BC. On the other hand, a high-BC m-LLDPE (32.2 CH3/1000 C) was found to be more miscible with LDPE than a low-BC m-LLDPE (14.4 CH3/1000 C) of the same Mw and MWD. The high-BC m-LLDPE blends with LDPE were partially miscible and immiscibility is likely to develop in LDPE-rich blends. Agreement was observed between the measured rheology and theoretical predictions of Einstein, Scholz et al., Palierne, and Bousmina emulsion models.

KW - Branch content

KW - Composition distribution

KW - Polyethylene blend miscibility

UR - https://www.scopus.com/pages/publications/0038265127

U2 - 10.1016/S0032-3861(03)00437-3

DO - 10.1016/S0032-3861(03)00437-3

M3 - Article

AN - SCOPUS:0038265127

SN - 0032-3861

VL - 44

SP - 4665

EP - 4672

JO - Polymer

JF - Polymer

IS - 16

ER -

Miscibility of hexene-LLDPE and LDPE blends: Influence of branch content and composition distribution

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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