Melt miscibility and mechanical properties of metallocene LLDPE blends with HDPE: Influence of Mw of LLDPE

Tayyab Hameed; Ibnelwaleed A. Hussein

doi:10.1295/polymj.PJ2005254

Melt miscibility and mechanical properties of metallocene LLDPE blends with HDPE: Influence of M_w of LLDPE

Tayyab Hameed
, Ibnelwaleed A. Hussein^*

^*Corresponding author for this work

King Fahd University of Petroleum & Minerals

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

16 Scopus citations

Abstract

The influence of M_w of LLDPE on the rheological, thermal and mechanical properties of m-LLDPE/HDPE blends of low and high branch content (BC) was studied. Melt rheology of m-LLDPE blended with linear HDPE revealed strong influence of M_w on melt miscibility at both branching levels. Low M_w m-LLDPE/HDPE blends are suggested to be miscible at all compositions, while viscosity of high M_w m-LLDPE/HDPE blends showed negative deviation from log additivity suggesting layered morphology of these blends. The DSC results suggest that compatibility in the solid state is independent of M_w and BC. For all blends studied, the HDPE-rich blends were found to contain single crystal populations suggesting high degree of cocrystallization, whereas, m-LLDPE rich phase showed separate crystallization. The melt miscibility and the crystallization of high BC m-LLDPE blends with HDPE are suggested to be controlled by different factors. Small strain mechanical properties of these blends were found to be a strong function of blend compatibility and the specific properties of the blend components.

Original language	English
Pages (from-to)	1114-1126
Number of pages	13
Journal	Polymer Journal
Volume	38
Issue number	11
DOIs	https://doi.org/10.1295/polymj.PJ2005254
State	Published - 2006

Bibliographical note

Funding Information:
Acknowledgment. The authors wish to acknowledge KFUPM for the financial support of this work through project # CHE/Rheology/223. Also, Mr. M. Arab of the Chemistry Department, KFUPM, is acknowledged for his help with the NMR analysis. Also, TH would like to thank Research Institute, KFUPM for its support.

Keywords

DSC
LLDPE/HDPE blends
Mechanical properties
Miscibility
Molecular weight
Rheology

ASJC Scopus subject areas

Polymers and Plastics
Materials Chemistry

Access to Document

10.1295/polymj.PJ2005254

Cite this

@article{f42ef6939ff94c72831ee203e4a0185f,

title = "Melt miscibility and mechanical properties of metallocene LLDPE blends with HDPE: Influence of Mw of LLDPE",

abstract = "The influence of Mw of LLDPE on the rheological, thermal and mechanical properties of m-LLDPE/HDPE blends of low and high branch content (BC) was studied. Melt rheology of m-LLDPE blended with linear HDPE revealed strong influence of Mw on melt miscibility at both branching levels. Low Mw m-LLDPE/HDPE blends are suggested to be miscible at all compositions, while viscosity of high Mw m-LLDPE/HDPE blends showed negative deviation from log additivity suggesting layered morphology of these blends. The DSC results suggest that compatibility in the solid state is independent of Mw and BC. For all blends studied, the HDPE-rich blends were found to contain single crystal populations suggesting high degree of cocrystallization, whereas, m-LLDPE rich phase showed separate crystallization. The melt miscibility and the crystallization of high BC m-LLDPE blends with HDPE are suggested to be controlled by different factors. Small strain mechanical properties of these blends were found to be a strong function of blend compatibility and the specific properties of the blend components.",

keywords = "DSC, LLDPE/HDPE blends, Mechanical properties, Miscibility, Molecular weight, Rheology",

author = "Tayyab Hameed and Hussein, \{Ibnelwaleed A.\}",

note = "Funding Information: Acknowledgment. The authors wish to acknowledge KFUPM for the financial support of this work through project \# CHE/Rheology/223. Also, Mr. M. Arab of the Chemistry Department, KFUPM, is acknowledged for his help with the NMR analysis. Also, TH would like to thank Research Institute, KFUPM for its support.",

year = "2006",

doi = "10.1295/polymj.PJ2005254",

language = "English",

volume = "38",

pages = "1114--1126",

journal = "Polymer Journal",

issn = "0032-3896",

publisher = "Nature Publishing Group",

number = "11",

}

TY - JOUR

T1 - Melt miscibility and mechanical properties of metallocene LLDPE blends with HDPE

T2 - Influence of Mw of LLDPE

AU - Hameed, Tayyab

AU - Hussein, Ibnelwaleed A.

N1 - Funding Information: Acknowledgment. The authors wish to acknowledge KFUPM for the financial support of this work through project # CHE/Rheology/223. Also, Mr. M. Arab of the Chemistry Department, KFUPM, is acknowledged for his help with the NMR analysis. Also, TH would like to thank Research Institute, KFUPM for its support.

PY - 2006

Y1 - 2006

N2 - The influence of Mw of LLDPE on the rheological, thermal and mechanical properties of m-LLDPE/HDPE blends of low and high branch content (BC) was studied. Melt rheology of m-LLDPE blended with linear HDPE revealed strong influence of Mw on melt miscibility at both branching levels. Low Mw m-LLDPE/HDPE blends are suggested to be miscible at all compositions, while viscosity of high Mw m-LLDPE/HDPE blends showed negative deviation from log additivity suggesting layered morphology of these blends. The DSC results suggest that compatibility in the solid state is independent of Mw and BC. For all blends studied, the HDPE-rich blends were found to contain single crystal populations suggesting high degree of cocrystallization, whereas, m-LLDPE rich phase showed separate crystallization. The melt miscibility and the crystallization of high BC m-LLDPE blends with HDPE are suggested to be controlled by different factors. Small strain mechanical properties of these blends were found to be a strong function of blend compatibility and the specific properties of the blend components.

AB - The influence of Mw of LLDPE on the rheological, thermal and mechanical properties of m-LLDPE/HDPE blends of low and high branch content (BC) was studied. Melt rheology of m-LLDPE blended with linear HDPE revealed strong influence of Mw on melt miscibility at both branching levels. Low Mw m-LLDPE/HDPE blends are suggested to be miscible at all compositions, while viscosity of high Mw m-LLDPE/HDPE blends showed negative deviation from log additivity suggesting layered morphology of these blends. The DSC results suggest that compatibility in the solid state is independent of Mw and BC. For all blends studied, the HDPE-rich blends were found to contain single crystal populations suggesting high degree of cocrystallization, whereas, m-LLDPE rich phase showed separate crystallization. The melt miscibility and the crystallization of high BC m-LLDPE blends with HDPE are suggested to be controlled by different factors. Small strain mechanical properties of these blends were found to be a strong function of blend compatibility and the specific properties of the blend components.

KW - DSC

KW - LLDPE/HDPE blends

KW - Mechanical properties

KW - Miscibility

KW - Molecular weight

KW - Rheology

UR - https://www.scopus.com/pages/publications/33846264920

U2 - 10.1295/polymj.PJ2005254

DO - 10.1295/polymj.PJ2005254

M3 - Article

AN - SCOPUS:33846264920

SN - 0032-3896

VL - 38

SP - 1114

EP - 1126

JO - Polymer Journal

JF - Polymer Journal

IS - 11

ER -