The absorption behavior and crystallization of poly(aryl ether ketone) films
Ke, YC; Wu, ZW
AbstractThe absorption and subsequent desorption behaviors of amorphous polymer films of PEEK poly(ether ether ketone), PEEKK poly(ether ether ketone ketone), and PEKK poly(ether ketone ketone) in solvent of 1,2-dichloroethane (C2H4Cl2) are investigated and compared. The equilibrium absorption weight (M-infinity) of these polymers is related to their molecular ketone content or molecular chain rigidity and also to the experimental conditions. Especially, at a certain temperature, the molecular chains in the solvent can be polarized, which leads to producing greater M-infinity for polymer films; for example, at 60 degrees C, M-infinity = 46% for PEEK and M-infinity = 65% for PEKK. The pseudodiffusion coefficients for PEEK, PEEKK, and PEKK all surpass the 6.0 x 10(-12) m(2) s(-1). The polymer's molecular polarization has been proved in concentrated sulfur acid. Results also show that amorphous resin's films become white and creeped in dichloroethane, which is more serious when metaphenyl links are introduced into PEEKK or PEKK molecular main chains. The residual solvent of 1% or so often exists in the films, even though a long desorption time (over 100 h) has been proceeded. Absorption has induced crystallization of amorphous polymer films, but this crystallization process is slightly different from that of the films crystallized from both the glassy state and the melting state in the solvent, which makes the amorphous interlayers grow progressively and more condensely; thus, the crystallized films will have higher T-g's than these crystallized under annealing condition. The morphology results have shown that the solvent-crystallized films are less toughened than the amorphous ones because of the intermediate layer between the induced crystallized area and the amorphous area in the core. (C) 1998 John Wiley & Sons, Inc.
KeywordAbsorption Desorption Poly(Aryl Ether Ketone) Films Molecular Polarization Chain Rigidity
Indexed BySCI
WOS IDWOS:000072120900012
Citation statistics
Cited Times:5[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorKe, YC
Affiliation1.Chinese Acad Sci, Inst Chem, Beijing 100080, Peoples R China
2.Jilin Univ, Dept Chem, Changchun 130023, Peoples R China
Recommended Citation
GB/T 7714
Ke, YC,Wu, ZW. The absorption behavior and crystallization of poly(aryl ether ketone) films[J]. JOURNAL OF APPLIED POLYMER SCIENCE,1998,67(12):2065-2075.
APA Ke, YC,&Wu, ZW.(1998).The absorption behavior and crystallization of poly(aryl ether ketone) films.JOURNAL OF APPLIED POLYMER SCIENCE,67(12),2065-2075.
MLA Ke, YC,et al."The absorption behavior and crystallization of poly(aryl ether ketone) films".JOURNAL OF APPLIED POLYMER SCIENCE 67.12(1998):2065-2075.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Ke, YC]'s Articles
[Wu, ZW]'s Articles
Baidu academic
Similar articles in Baidu academic
[Ke, YC]'s Articles
[Wu, ZW]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Ke, YC]'s Articles
[Wu, ZW]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.