Abstract
A new group of miscible mixtures (molecular composites) has been studied by means of differential scanning calorimetry, dielectric relaxation and dynamic mechanical techniques. Three kinds of rigid aromatic polyimides (PI) and a commercial-grade poly(ether imide) (PEI) were mixed by dissolving them in m-cresol and subsequently coagulating in methanol. The mixtures show a single glass transition temperature (Tg) in all compositions in which the Tg increases with increasing PI content. These Tg values are reproducible in repeated heating cycles, suggesting the true miscibility of the blends. This miscibility may be attributed to the similarity of imide structure between the rigid PI and PEI matrix. The bulk PI/PEI indeed shows improved modulus and tensile strength as compared to the pure PEI matrix.
| Original language | English |
|---|---|
| Pages (from-to) | 3621-3626 |
| Number of pages | 6 |
| Journal | Polymer |
| Volume | 33 |
| Issue number | 17 |
| DOIs | |
| Publication status | Published - 1992 |
| Externally published | Yes |
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Keywords
- dielectric relaxation
- differential scanning calorimetry
- dynamic mechanical analysis
- miscibility
- molecular composites
- poly(ether imide)
- polyimide
ASJC Scopus subject areas
- Organic Chemistry
- Polymers and Plastics
Cite this
Miscibility studies of polyimide/poly(ether imide) molecular composites. / Fukai, T.; Yang, J. C.; Kyu, T.; Cheng, S. Z D; Lee, S. K.; Hsu, S. L C; Harris, F. W.
In: Polymer, Vol. 33, No. 17, 1992, p. 3621-3626.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Miscibility studies of polyimide/poly(ether imide) molecular composites
AU - Fukai, T.
AU - Yang, J. C.
AU - Kyu, T.
AU - Cheng, S. Z D
AU - Lee, S. K.
AU - Hsu, S. L C
AU - Harris, F. W.
PY - 1992
Y1 - 1992
N2 - A new group of miscible mixtures (molecular composites) has been studied by means of differential scanning calorimetry, dielectric relaxation and dynamic mechanical techniques. Three kinds of rigid aromatic polyimides (PI) and a commercial-grade poly(ether imide) (PEI) were mixed by dissolving them in m-cresol and subsequently coagulating in methanol. The mixtures show a single glass transition temperature (Tg) in all compositions in which the Tg increases with increasing PI content. These Tg values are reproducible in repeated heating cycles, suggesting the true miscibility of the blends. This miscibility may be attributed to the similarity of imide structure between the rigid PI and PEI matrix. The bulk PI/PEI indeed shows improved modulus and tensile strength as compared to the pure PEI matrix.
AB - A new group of miscible mixtures (molecular composites) has been studied by means of differential scanning calorimetry, dielectric relaxation and dynamic mechanical techniques. Three kinds of rigid aromatic polyimides (PI) and a commercial-grade poly(ether imide) (PEI) were mixed by dissolving them in m-cresol and subsequently coagulating in methanol. The mixtures show a single glass transition temperature (Tg) in all compositions in which the Tg increases with increasing PI content. These Tg values are reproducible in repeated heating cycles, suggesting the true miscibility of the blends. This miscibility may be attributed to the similarity of imide structure between the rigid PI and PEI matrix. The bulk PI/PEI indeed shows improved modulus and tensile strength as compared to the pure PEI matrix.
KW - dielectric relaxation
KW - differential scanning calorimetry
KW - dynamic mechanical analysis
KW - miscibility
KW - molecular composites
KW - poly(ether imide)
KW - polyimide
UR - http://www.scopus.com/inward/record.url?scp=0000646049&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0000646049&partnerID=8YFLogxK
U2 - 10.1016/0032-3861(92)90646-E
DO - 10.1016/0032-3861(92)90646-E
M3 - Article
AN - SCOPUS:0000646049
VL - 33
SP - 3621
EP - 3626
JO - Polymer
JF - Polymer
SN - 0032-3861
IS - 17
ER -