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Compatibilization by sulfonate ionomers in polyblends with thermotropic liquid crystalline polymers
He, JS; Liu, J
1998-03-28
Source PublicationJOURNAL OF APPLIED POLYMER SCIENCE
ISSN0021-8995
Volume67Issue:13Pages:2141-2151
AbstractIt is shown by differential scanning calorimetry (DSC) measurements that Lightly sulfonated polystyrene (SPS) is partially miscible with polysulfone (PSF), polycarbonate (PC), polyetherimide (PEI), and a thermotropic liquid crystalline polymer (LCP). Fourier transform infrared analysis confirms that the miscibility of SPS and PSF, and of SPS and PC, comes from the ion-dipole interaction between the sulfonate groups of SPS and the polar groups of PSF and PC, respectively. After the addition of SPS to LCP/PSF, LCP/PC, and LCP/PEI blends, this specific interaction leads to the compatibilization of SPS in these blends, which is revealed by inward glass transition temperature shifts of component polymers in DSC and dynamic mechanical analysis thermograms and by a much finer dispersion of the minor LCP phase in these matrix polymers. The utilization of SPS as the compatibilizer results in a stronger interfacial adhesion between LCP and matrix phases and improves the mechanical performances of LCP/PSF, LCP/PC, and LCP/PEI blends as well. Compared with ternary LCP/PSF, LCP/PC, and LCP/PEI blends with polystyrene as an inert third component, the ternary LCP/SPS/PSF, LCP/SPS/PC, and LCP/SPS/PEI blends have significantly enhanced tensile strengths and moduli, with acceptable processabilities at the same time. (C) 1998 John Wiley & Sons, Inc.
KeywordLiquid Crystalline Polymers Sulfonate Ionomers Compatibilization
Indexed BySCI
Language英语
WOS IDWOS:000072214400004
PublisherJOHN WILEY & SONS INC
Citation statistics
Cited Times:23[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.iccas.ac.cn/handle/121111/74526
Collection中国科学院化学研究所
Corresponding AuthorHe, JS
AffiliationChinese Acad Sci, Inst Chem, State Key Lab Engn Plast, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
He, JS,Liu, J. Compatibilization by sulfonate ionomers in polyblends with thermotropic liquid crystalline polymers[J]. JOURNAL OF APPLIED POLYMER SCIENCE,1998,67(13):2141-2151.
APA He, JS,&Liu, J.(1998).Compatibilization by sulfonate ionomers in polyblends with thermotropic liquid crystalline polymers.JOURNAL OF APPLIED POLYMER SCIENCE,67(13),2141-2151.
MLA He, JS,et al."Compatibilization by sulfonate ionomers in polyblends with thermotropic liquid crystalline polymers".JOURNAL OF APPLIED POLYMER SCIENCE 67.13(1998):2141-2151.
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