Comparative study of maleated polypropylene as a coupling agent for recycled low-density polyethylene/wood flour composites

Saddys Rodríguez-Llamazares, Alejandro Zuñiga, Johanna Castaño, Ljubisa R. Radovic

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

The effects of the type of coupling agent and virgin polypropylene (PP) content on the mechanical properties and water absorption behavior of recycled low-density polyethylene/wood flour (WF) composites were investigated. The fractured surfaces of these recycled wood/plastic composites (rWPCs) were examined to gain insight into the distribution and dispersion of WF within the polymer matrix. The results indicate that the use of 100% recycled polymer led to inferior mechanical properties and to a greater degree of moisture absorption and swelling when compared to recycled polymer-virgin PP wood/plastic composites. This could have been related to the poor melt strength and inferior processability of the recycled polymer. The extent of improvement of the mechanical properties depended not only on the virgin PP content in the matrix but also on the presence of maleic anhydride (MA) modified PP as the coupling agent. Higher concentrations of MA group were beneficial; this improvement was attributed to increased chemical bonding (ester linkages) between hydroxyl moieties in WF and anhydride moieties in the coupling agent.

Original languageEnglish (US)
Pages (from-to)1731-1741
Number of pages11
JournalJournal of Applied Polymer Science
Volume122
Issue number3
DOIs
StatePublished - Nov 5 2011

Fingerprint

Polypropylenes
Coupling agents
Low density polyethylenes
Polyethylene
Wood
Maleic Anhydrides
Composite materials
Polymers
Maleic anhydride
Mechanical properties
Plastics
Anhydrides
Water absorption
Polymer matrix
Hydroxyl Radical
Swelling
Esters
Moisture

All Science Journal Classification (ASJC) codes

  • Chemistry(all)
  • Surfaces, Coatings and Films
  • Polymers and Plastics
  • Materials Chemistry

Cite this

@article{e769fb724789401d9e0df574efa17150,
title = "Comparative study of maleated polypropylene as a coupling agent for recycled low-density polyethylene/wood flour composites",
abstract = "The effects of the type of coupling agent and virgin polypropylene (PP) content on the mechanical properties and water absorption behavior of recycled low-density polyethylene/wood flour (WF) composites were investigated. The fractured surfaces of these recycled wood/plastic composites (rWPCs) were examined to gain insight into the distribution and dispersion of WF within the polymer matrix. The results indicate that the use of 100{\%} recycled polymer led to inferior mechanical properties and to a greater degree of moisture absorption and swelling when compared to recycled polymer-virgin PP wood/plastic composites. This could have been related to the poor melt strength and inferior processability of the recycled polymer. The extent of improvement of the mechanical properties depended not only on the virgin PP content in the matrix but also on the presence of maleic anhydride (MA) modified PP as the coupling agent. Higher concentrations of MA group were beneficial; this improvement was attributed to increased chemical bonding (ester linkages) between hydroxyl moieties in WF and anhydride moieties in the coupling agent.",
author = "Saddys Rodr{\'i}guez-Llamazares and Alejandro Zu{\~n}iga and Johanna Casta{\~n}o and Radovic, {Ljubisa R.}",
year = "2011",
month = "11",
day = "5",
doi = "10.1002/app.34104",
language = "English (US)",
volume = "122",
pages = "1731--1741",
journal = "Journal of Applied Polymer Science",
issn = "0021-8995",
publisher = "John Wiley and Sons Inc.",
number = "3",

}

Comparative study of maleated polypropylene as a coupling agent for recycled low-density polyethylene/wood flour composites. / Rodríguez-Llamazares, Saddys; Zuñiga, Alejandro; Castaño, Johanna; Radovic, Ljubisa R.

In: Journal of Applied Polymer Science, Vol. 122, No. 3, 05.11.2011, p. 1731-1741.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Comparative study of maleated polypropylene as a coupling agent for recycled low-density polyethylene/wood flour composites

AU - Rodríguez-Llamazares, Saddys

AU - Zuñiga, Alejandro

AU - Castaño, Johanna

AU - Radovic, Ljubisa R.

PY - 2011/11/5

Y1 - 2011/11/5

N2 - The effects of the type of coupling agent and virgin polypropylene (PP) content on the mechanical properties and water absorption behavior of recycled low-density polyethylene/wood flour (WF) composites were investigated. The fractured surfaces of these recycled wood/plastic composites (rWPCs) were examined to gain insight into the distribution and dispersion of WF within the polymer matrix. The results indicate that the use of 100% recycled polymer led to inferior mechanical properties and to a greater degree of moisture absorption and swelling when compared to recycled polymer-virgin PP wood/plastic composites. This could have been related to the poor melt strength and inferior processability of the recycled polymer. The extent of improvement of the mechanical properties depended not only on the virgin PP content in the matrix but also on the presence of maleic anhydride (MA) modified PP as the coupling agent. Higher concentrations of MA group were beneficial; this improvement was attributed to increased chemical bonding (ester linkages) between hydroxyl moieties in WF and anhydride moieties in the coupling agent.

AB - The effects of the type of coupling agent and virgin polypropylene (PP) content on the mechanical properties and water absorption behavior of recycled low-density polyethylene/wood flour (WF) composites were investigated. The fractured surfaces of these recycled wood/plastic composites (rWPCs) were examined to gain insight into the distribution and dispersion of WF within the polymer matrix. The results indicate that the use of 100% recycled polymer led to inferior mechanical properties and to a greater degree of moisture absorption and swelling when compared to recycled polymer-virgin PP wood/plastic composites. This could have been related to the poor melt strength and inferior processability of the recycled polymer. The extent of improvement of the mechanical properties depended not only on the virgin PP content in the matrix but also on the presence of maleic anhydride (MA) modified PP as the coupling agent. Higher concentrations of MA group were beneficial; this improvement was attributed to increased chemical bonding (ester linkages) between hydroxyl moieties in WF and anhydride moieties in the coupling agent.

UR - http://www.scopus.com/inward/record.url?scp=79960561934&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79960561934&partnerID=8YFLogxK

U2 - 10.1002/app.34104

DO - 10.1002/app.34104

M3 - Article

AN - SCOPUS:79960561934

VL - 122

SP - 1731

EP - 1741

JO - Journal of Applied Polymer Science

JF - Journal of Applied Polymer Science

SN - 0021-8995

IS - 3

ER -