Epoxy/polycaprolactone systems with triple-shape memory effect: Electrospun nanoweb with and without graphene Versus co-continuous morphology

Márta Fejos, Kolos Molnár, J. Karger-Kocsis

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

Triple-shape memory epoxy (EP)/polycaprolactone (PCL) systems (PCL content: 23 wt %) with different structures (PCL nanoweb embedded in EP matrix and EP/PCL with co-continuous phase structure) were produced. To set the two temporary shapes, the glass transition temperature (Tg) of the EP and the melting temperature (Tm) of PCL served during the shape memory cycle. An attempt was made to reinforce the PCL nanoweb by graphene nanoplatelets prior to infiltrating the nanoweb with EP through vacuum assisted resin transfer molding. Morphology was analyzed by scanning electron microscopy and Raman spectrometry. Triple-shape memory characteristics were determined by dynamic mechanical analysis in tension mode. Graphene was supposed to act also as spacer between the nanofibers, improving the quality of impregnation with EP. The EP phase related shape memory properties were similar for all systems, while those belonging to PCL phase depended on the structure. Shape fixity of PCL was better without than with graphene reinforcement. The best shape memory performance was shown by the EP/PCL with co-continuous structure. Based on Raman spectrometry results, the characteristic dimension of the related co-continuous network was below 900 nm.

Original languageEnglish
Pages (from-to)4489-4504
Number of pages16
JournalMaterials
Volume6
Issue number10
DOIs
Publication statusPublished - 2013

Fingerprint

Polycaprolactone
Graphite
Shape memory effect
Graphene
Spectrometry
polycaprolactone
Resin transfer molding
Dynamic mechanical analysis
Phase structure
Nanofibers
Impregnation
Melting point
Reinforcement
Vacuum
Scanning electron microscopy

Keywords

  • Co-continuous phase structure
  • Electrospinning
  • Graphene
  • Nanocomposite
  • Nanofiber
  • Polycaprolactone
  • Poxy
  • Triple-shape memory effect

ASJC Scopus subject areas

  • Materials Science(all)

Cite this

Epoxy/polycaprolactone systems with triple-shape memory effect : Electrospun nanoweb with and without graphene Versus co-continuous morphology. / Fejos, Márta; Molnár, Kolos; Karger-Kocsis, J.

In: Materials, Vol. 6, No. 10, 2013, p. 4489-4504.

Research output: Contribution to journalArticle

@article{4594cace3c5147c1a6ac392d21332dd4,
title = "Epoxy/polycaprolactone systems with triple-shape memory effect: Electrospun nanoweb with and without graphene Versus co-continuous morphology",
abstract = "Triple-shape memory epoxy (EP)/polycaprolactone (PCL) systems (PCL content: 23 wt {\%}) with different structures (PCL nanoweb embedded in EP matrix and EP/PCL with co-continuous phase structure) were produced. To set the two temporary shapes, the glass transition temperature (Tg) of the EP and the melting temperature (Tm) of PCL served during the shape memory cycle. An attempt was made to reinforce the PCL nanoweb by graphene nanoplatelets prior to infiltrating the nanoweb with EP through vacuum assisted resin transfer molding. Morphology was analyzed by scanning electron microscopy and Raman spectrometry. Triple-shape memory characteristics were determined by dynamic mechanical analysis in tension mode. Graphene was supposed to act also as spacer between the nanofibers, improving the quality of impregnation with EP. The EP phase related shape memory properties were similar for all systems, while those belonging to PCL phase depended on the structure. Shape fixity of PCL was better without than with graphene reinforcement. The best shape memory performance was shown by the EP/PCL with co-continuous structure. Based on Raman spectrometry results, the characteristic dimension of the related co-continuous network was below 900 nm.",
keywords = "Co-continuous phase structure, Electrospinning, Graphene, Nanocomposite, Nanofiber, Polycaprolactone, Poxy, Triple-shape memory effect",
author = "M{\'a}rta Fejos and Kolos Moln{\'a}r and J. Karger-Kocsis",
year = "2013",
doi = "10.3390/ma6104489",
language = "English",
volume = "6",
pages = "4489--4504",
journal = "Materials",
issn = "1996-1944",
publisher = "MDPI AG",
number = "10",

}

TY - JOUR

T1 - Epoxy/polycaprolactone systems with triple-shape memory effect

T2 - Electrospun nanoweb with and without graphene Versus co-continuous morphology

AU - Fejos, Márta

AU - Molnár, Kolos

AU - Karger-Kocsis, J.

PY - 2013

Y1 - 2013

N2 - Triple-shape memory epoxy (EP)/polycaprolactone (PCL) systems (PCL content: 23 wt %) with different structures (PCL nanoweb embedded in EP matrix and EP/PCL with co-continuous phase structure) were produced. To set the two temporary shapes, the glass transition temperature (Tg) of the EP and the melting temperature (Tm) of PCL served during the shape memory cycle. An attempt was made to reinforce the PCL nanoweb by graphene nanoplatelets prior to infiltrating the nanoweb with EP through vacuum assisted resin transfer molding. Morphology was analyzed by scanning electron microscopy and Raman spectrometry. Triple-shape memory characteristics were determined by dynamic mechanical analysis in tension mode. Graphene was supposed to act also as spacer between the nanofibers, improving the quality of impregnation with EP. The EP phase related shape memory properties were similar for all systems, while those belonging to PCL phase depended on the structure. Shape fixity of PCL was better without than with graphene reinforcement. The best shape memory performance was shown by the EP/PCL with co-continuous structure. Based on Raman spectrometry results, the characteristic dimension of the related co-continuous network was below 900 nm.

AB - Triple-shape memory epoxy (EP)/polycaprolactone (PCL) systems (PCL content: 23 wt %) with different structures (PCL nanoweb embedded in EP matrix and EP/PCL with co-continuous phase structure) were produced. To set the two temporary shapes, the glass transition temperature (Tg) of the EP and the melting temperature (Tm) of PCL served during the shape memory cycle. An attempt was made to reinforce the PCL nanoweb by graphene nanoplatelets prior to infiltrating the nanoweb with EP through vacuum assisted resin transfer molding. Morphology was analyzed by scanning electron microscopy and Raman spectrometry. Triple-shape memory characteristics were determined by dynamic mechanical analysis in tension mode. Graphene was supposed to act also as spacer between the nanofibers, improving the quality of impregnation with EP. The EP phase related shape memory properties were similar for all systems, while those belonging to PCL phase depended on the structure. Shape fixity of PCL was better without than with graphene reinforcement. The best shape memory performance was shown by the EP/PCL with co-continuous structure. Based on Raman spectrometry results, the characteristic dimension of the related co-continuous network was below 900 nm.

KW - Co-continuous phase structure

KW - Electrospinning

KW - Graphene

KW - Nanocomposite

KW - Nanofiber

KW - Polycaprolactone

KW - Poxy

KW - Triple-shape memory effect

UR - http://www.scopus.com/inward/record.url?scp=84888769255&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84888769255&partnerID=8YFLogxK

U2 - 10.3390/ma6104489

DO - 10.3390/ma6104489

M3 - Article

AN - SCOPUS:84888769255

VL - 6

SP - 4489

EP - 4504

JO - Materials

JF - Materials

SN - 1996-1944

IS - 10

ER -