DOI: 10.1016/j.jcou.2018.08.006
Scopus记录号: 2-s2.0-85051533158
论文题名: Surface wettability of supercritical CO2 - Ionic liquid processed aromatic polyamides
作者: Jing X. ; Han Y. ; Zheng L. ; Zheng H.
刊名: Journal of CO2 Utilization
ISSN: 22129820
出版年: 2018
卷: 27 起始页码: 289
结束页码: 296
语种: 英语
英文关键词: Aromatic polyamides
; Ionic liquid
; Modification
; Supercritical CO2
; Wettability
Scopus关键词: Amides
; Aromatic compounds
; Aromatization
; Carbon dioxide
; Contact angle
; Hydrogen bonds
; Polyamides
; Surface treatment
; Wetting
; 1-Butyl-3-methyl-imidazolium hexafluorophosphate
; Aromatic polyamides
; Decomposition temperature
; Dynamic contact-angle analysis
; Hydrogen bonding structures
; Modification
; Supercritical CO2
; Treatment temperature
; Ionic liquids
英文摘要: Wettability of aromatic polyamides (aramids) was investigated after exposed to the binary system of 1-Butyl-3-methylimidazolium hexafluorophosphate and supercritical CO2, which was performed at a pressure of 30 MPa for 60 min by varying the treatment temperature between 80 °C and 120 °C. Dynamic contact angle analysis for the original and treated aramids was conducted to determine the correlation between the surface treatment and the polymer wettability. It is confirmed that the water contact angles for aramids were reduced significantly from 139.8° to 83.0° in the supercritical CO2-ionic liquid systems, and the hydrogen bonding structure between the amide linkages in aramids and the PF- 6 in [BMIM][PF6] was proved to form, which is conducive to the improvement of wettability. SEM observations revealed more and more pleat-like wrinkles appeared on the surface of aramid, accompanied by the notable fiber swelling in the supercritical CO2-ionic liquid systems. In addition, XRD and TG analysis indicated that the crystallinity and the maximum decomposition temperatures of aramids were decreased gradually with ionic liquid treatment while those of aramids were increased with the temperature rising by adding ionic liquid in supercritical CO2. Overall, this proves to be an more effective and ecofriendly approach for aramid modification by supercritical CO2-ionic liquid systems. © 2018 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/111809
Appears in Collections: 气候减缓与适应
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作者单位: National Supercritical Fluid Dyeing Technology Research Center, Dalian Polytechnic University, Dalian, Liaoning, 116034, China
Recommended Citation:
Jing X.,Han Y.,Zheng L.,et al. Surface wettability of supercritical CO2 - Ionic liquid processed aromatic polyamides[J]. Journal of CO2 Utilization,2018-01-01,27