Miscibility of poly (etherimide) and poly (butylene naphthalate) blends |
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Authors: | Ching Hsuan Lin Chun Shan Wang |
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Affiliation: | (1) Department of Applied Fiber Style, Kung Shan University of Technology, Tainan, Taiwan, Republic of China, TW;(2) Department of Chemical Engineering, National Cheng Kung University, Tainan, Taiwan, Republic of China 70101, TW |
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Abstract: | Summary
Differential scanning calorimeter (DSC), optical microscopy (OM) and scanning electron microscopy (SEM) were performed to
characterize the miscibility of a blend system comprising poly (butylene naphthalate) (PBN) and poly (ether imide) (PEI).
DSC scans showed there was only one single Tg for each blend and the glass transitions increase monotonously with the increase
of PEI content. The glass transition temperatures of the blends fitted the Fox equation well implying that the blends exhibited
fine segmental scale of mixing. No lower critical solution temperature (LCST) was observed by OM for the blends. SEM micrographs
showed the fracture surface of quenched sample exhibited a homogeneous structure. No obvious IR peak shift of C=O absorption
at 1780 cm−1 was observed suggesting a relatively low level of specific interaction between two molecules. It was concluded that these
blends were miscible with non-specific intermolecular interactions.
Received: 5 January 2001/Accepted: 27 February 2001 |
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