Reaction-induced phase separation in a semiinterpenetrating network of reactive ternary blends

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

Morphology and reaction mechanisms were probed on a model reactive ternary blend system of polycarbonate (PC), poly(methyl methacrylate) (PMMA), and diglycidylether of bisphenol-A (DGEBA) epoxy by using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). Molecular interactions/reactions between the components in the blends after heating treatments are discussed. It was found that reactions took place among the components and that an interpenetrating network was built. The possible reaction mechanisms and the resulting structures after the heating treatments were probed. In the blends, PC and DGEBA reacted to form a network, while PMMA remained free. The semiinterpenetration, however, did not result in a network interlocked into a homogeneous state. The single Tg of the heated ternary DGEBA/PC/PMMA blends actually did not reflect a homogeneous interpenetrating network. Due to relatively small PMMA domains, the ternary blend network exhibited a single Tg. Upon etching the PMMA domains from the blend by acetone, a clearly interpenetrating network of reacted PC and epoxy was exposed and confirmed. The reactions leading to such a morphology are discussed with experimental evidence.

Original languageEnglish
Pages (from-to)781-788
Number of pages8
JournalJournal of Polymer Science, Part A: Polymer Chemistry
Volume34
Issue number5
DOIs
Publication statusPublished - 1996 Apr 15

Fingerprint

Polymethyl Methacrylate
Polymethyl methacrylates
polycarbonate
Phase separation
Polycarbonates
Interpenetrating polymer networks
Heating
Molecular interactions
Acetone
Fourier transform infrared spectroscopy
Differential scanning calorimetry
Etching
Scanning electron microscopy
bisphenol-A-polycarbonate

All Science Journal Classification (ASJC) codes

  • Polymers and Plastics
  • Organic Chemistry
  • Materials Chemistry

Cite this

@article{1ee8f7d980da4bb0a57a2d81eab9ca0e,
title = "Reaction-induced phase separation in a semiinterpenetrating network of reactive ternary blends",
abstract = "Morphology and reaction mechanisms were probed on a model reactive ternary blend system of polycarbonate (PC), poly(methyl methacrylate) (PMMA), and diglycidylether of bisphenol-A (DGEBA) epoxy by using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). Molecular interactions/reactions between the components in the blends after heating treatments are discussed. It was found that reactions took place among the components and that an interpenetrating network was built. The possible reaction mechanisms and the resulting structures after the heating treatments were probed. In the blends, PC and DGEBA reacted to form a network, while PMMA remained free. The semiinterpenetration, however, did not result in a network interlocked into a homogeneous state. The single Tg of the heated ternary DGEBA/PC/PMMA blends actually did not reflect a homogeneous interpenetrating network. Due to relatively small PMMA domains, the ternary blend network exhibited a single Tg. Upon etching the PMMA domains from the blend by acetone, a clearly interpenetrating network of reacted PC and epoxy was exposed and confirmed. The reactions leading to such a morphology are discussed with experimental evidence.",
author = "Eamor Woo",
year = "1996",
month = "4",
day = "15",
doi = "10.1002/(SICI)1099-0518(19960415)34:5<781::AID-POLA8>3.0.CO;2-Q",
language = "English",
volume = "34",
pages = "781--788",
journal = "Journal of Polymer Science, Part A: Polymer Chemistry",
issn = "0887-624X",
publisher = "John Wiley and Sons Inc.",
number = "5",

}

TY - JOUR

T1 - Reaction-induced phase separation in a semiinterpenetrating network of reactive ternary blends

AU - Woo, Eamor

PY - 1996/4/15

Y1 - 1996/4/15

N2 - Morphology and reaction mechanisms were probed on a model reactive ternary blend system of polycarbonate (PC), poly(methyl methacrylate) (PMMA), and diglycidylether of bisphenol-A (DGEBA) epoxy by using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). Molecular interactions/reactions between the components in the blends after heating treatments are discussed. It was found that reactions took place among the components and that an interpenetrating network was built. The possible reaction mechanisms and the resulting structures after the heating treatments were probed. In the blends, PC and DGEBA reacted to form a network, while PMMA remained free. The semiinterpenetration, however, did not result in a network interlocked into a homogeneous state. The single Tg of the heated ternary DGEBA/PC/PMMA blends actually did not reflect a homogeneous interpenetrating network. Due to relatively small PMMA domains, the ternary blend network exhibited a single Tg. Upon etching the PMMA domains from the blend by acetone, a clearly interpenetrating network of reacted PC and epoxy was exposed and confirmed. The reactions leading to such a morphology are discussed with experimental evidence.

AB - Morphology and reaction mechanisms were probed on a model reactive ternary blend system of polycarbonate (PC), poly(methyl methacrylate) (PMMA), and diglycidylether of bisphenol-A (DGEBA) epoxy by using differential scanning calorimetry (DSC), scanning electron microscopy (SEM), and Fourier transform infrared spectroscopy (FTIR). Molecular interactions/reactions between the components in the blends after heating treatments are discussed. It was found that reactions took place among the components and that an interpenetrating network was built. The possible reaction mechanisms and the resulting structures after the heating treatments were probed. In the blends, PC and DGEBA reacted to form a network, while PMMA remained free. The semiinterpenetration, however, did not result in a network interlocked into a homogeneous state. The single Tg of the heated ternary DGEBA/PC/PMMA blends actually did not reflect a homogeneous interpenetrating network. Due to relatively small PMMA domains, the ternary blend network exhibited a single Tg. Upon etching the PMMA domains from the blend by acetone, a clearly interpenetrating network of reacted PC and epoxy was exposed and confirmed. The reactions leading to such a morphology are discussed with experimental evidence.

UR - http://www.scopus.com/inward/record.url?scp=0030129649&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0030129649&partnerID=8YFLogxK

U2 - 10.1002/(SICI)1099-0518(19960415)34:5<781::AID-POLA8>3.0.CO;2-Q

DO - 10.1002/(SICI)1099-0518(19960415)34:5<781::AID-POLA8>3.0.CO;2-Q

M3 - Article

VL - 34

SP - 781

EP - 788

JO - Journal of Polymer Science, Part A: Polymer Chemistry

JF - Journal of Polymer Science, Part A: Polymer Chemistry

SN - 0887-624X

IS - 5

ER -