Reactive compatibilization of PA6/LDPE blends with an ethylene–acrylic acid copolymer and a low molar mass bis-oxazoline

Roberto Scaffaro, Francesco Paolo La Mantia, Loredana Canfora, Giovanni Polacco, Sara Filippi, Pierluigi Magagnini

Risultato della ricerca: Article

61 Citazioni (Scopus)

Abstract

A sample of polyamide-6 (PA) was blended with low density polyethylene (LDPE) in the 80/20 wt/wt ratio, either without and with 2 phr of an ethylene-acrylic acid copolymer (EAA), Which was known to behave as a compatibilizer precursor, and the effect of the addition of small amounts (0.2 or 0.35 phr) of a fourth component, 2,2'-(1,3-phenylene)-bis(2-oxazoline) (PBO), was investigated. The reactions of PBO with EAA, PA and their blends were studied by recording as a function of time the torque applied to the blending apparatuses and by studying the solubility behavior of the products in formic acid. The PALDPE blends were prepared in a co-rotating twin screw extruder and were characterized by Molau tests, differential scanning calorimetry, scanning electron microscopy, rheology, and determination of the ultimate mechanical properties, including impact tests. The results indicate that the effectiveness of EAA as a compatibilizer precursor is considerably enhanced when PBO is added into the blends. It is thought that the reactions of PBO with the free carboxyl groups of EAA and with the an-fine or carboxyl end groups of PA run, at least in part, toward the formation of PA-g-EAA copolymers acting as the true compatibilizers for these blends.
Lingua originaleEnglish
pagine (da-a)6951-6957
Numero di pagine7
RivistaPolymer
Volume44
Stato di pubblicazionePublished - 2003

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Compatibilizers
Molar mass
Low density polyethylenes
Polyethylene
Copolymers
Acrylics
Ethylene
Polyamides
Acids
formic acid
Formic acid
Extruders
Rheology
Differential scanning calorimetry
Torque
Solubility
(polyethylene-acrylic acid) copolymer
Mechanical properties
Scanning electron microscopy
nylon 6

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Materials Chemistry
  • Organic Chemistry

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title = "Reactive compatibilization of PA6/LDPE blends with an ethylene–acrylic acid copolymer and a low molar mass bis-oxazoline",
abstract = "A sample of polyamide-6 (PA) was blended with low density polyethylene (LDPE) in the 80/20 wt/wt ratio, either without and with 2 phr of an ethylene-acrylic acid copolymer (EAA), Which was known to behave as a compatibilizer precursor, and the effect of the addition of small amounts (0.2 or 0.35 phr) of a fourth component, 2,2'-(1,3-phenylene)-bis(2-oxazoline) (PBO), was investigated. The reactions of PBO with EAA, PA and their blends were studied by recording as a function of time the torque applied to the blending apparatuses and by studying the solubility behavior of the products in formic acid. The PALDPE blends were prepared in a co-rotating twin screw extruder and were characterized by Molau tests, differential scanning calorimetry, scanning electron microscopy, rheology, and determination of the ultimate mechanical properties, including impact tests. The results indicate that the effectiveness of EAA as a compatibilizer precursor is considerably enhanced when PBO is added into the blends. It is thought that the reactions of PBO with the free carboxyl groups of EAA and with the an-fine or carboxyl end groups of PA run, at least in part, toward the formation of PA-g-EAA copolymers acting as the true compatibilizers for these blends.",
author = "Roberto Scaffaro and {La Mantia}, {Francesco Paolo} and Loredana Canfora and Giovanni Polacco and Sara Filippi and Pierluigi Magagnini",
year = "2003",
language = "English",
volume = "44",
pages = "6951--6957",
journal = "Polymer",
issn = "0032-3861",
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TY - JOUR

T1 - Reactive compatibilization of PA6/LDPE blends with an ethylene–acrylic acid copolymer and a low molar mass bis-oxazoline

AU - Scaffaro, Roberto

AU - La Mantia, Francesco Paolo

AU - Canfora, Loredana

AU - Polacco, Giovanni

AU - Filippi, Sara

AU - Magagnini, Pierluigi

PY - 2003

Y1 - 2003

N2 - A sample of polyamide-6 (PA) was blended with low density polyethylene (LDPE) in the 80/20 wt/wt ratio, either without and with 2 phr of an ethylene-acrylic acid copolymer (EAA), Which was known to behave as a compatibilizer precursor, and the effect of the addition of small amounts (0.2 or 0.35 phr) of a fourth component, 2,2'-(1,3-phenylene)-bis(2-oxazoline) (PBO), was investigated. The reactions of PBO with EAA, PA and their blends were studied by recording as a function of time the torque applied to the blending apparatuses and by studying the solubility behavior of the products in formic acid. The PALDPE blends were prepared in a co-rotating twin screw extruder and were characterized by Molau tests, differential scanning calorimetry, scanning electron microscopy, rheology, and determination of the ultimate mechanical properties, including impact tests. The results indicate that the effectiveness of EAA as a compatibilizer precursor is considerably enhanced when PBO is added into the blends. It is thought that the reactions of PBO with the free carboxyl groups of EAA and with the an-fine or carboxyl end groups of PA run, at least in part, toward the formation of PA-g-EAA copolymers acting as the true compatibilizers for these blends.

AB - A sample of polyamide-6 (PA) was blended with low density polyethylene (LDPE) in the 80/20 wt/wt ratio, either without and with 2 phr of an ethylene-acrylic acid copolymer (EAA), Which was known to behave as a compatibilizer precursor, and the effect of the addition of small amounts (0.2 or 0.35 phr) of a fourth component, 2,2'-(1,3-phenylene)-bis(2-oxazoline) (PBO), was investigated. The reactions of PBO with EAA, PA and their blends were studied by recording as a function of time the torque applied to the blending apparatuses and by studying the solubility behavior of the products in formic acid. The PALDPE blends were prepared in a co-rotating twin screw extruder and were characterized by Molau tests, differential scanning calorimetry, scanning electron microscopy, rheology, and determination of the ultimate mechanical properties, including impact tests. The results indicate that the effectiveness of EAA as a compatibilizer precursor is considerably enhanced when PBO is added into the blends. It is thought that the reactions of PBO with the free carboxyl groups of EAA and with the an-fine or carboxyl end groups of PA run, at least in part, toward the formation of PA-g-EAA copolymers acting as the true compatibilizers for these blends.

UR - http://hdl.handle.net/10447/296234

M3 - Article

VL - 44

SP - 6951

EP - 6957

JO - Polymer

JF - Polymer

SN - 0032-3861

ER -