CAS OpenIR  > 中科院上海应用物理研究所2011-2018年
Preparation of High Hydrophilic PTFE Powder and Its Dispersion Stability
Li, H; Zeng, HY; Xing, Z; Li, R; Gao, QH; Wang, HL; Wu, GZ; Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
2016
Source PublicationACTA POLYMERICA SINICA
ISSN1000-3304
Issue9Pages:1247-1253
Subtype期刊论文
AbstractAcrylic acid (AAc) and 2-acrylamide-2-methylpropanesulfonic acid (AMPS) were successfully grafted on polyterafluoroethylene (PTFE) powder by the fact that gamma-ray radiation induced graft coploymerization for preparation of high hydrophilic PTFE powder. The chemical structure and hydrophilicity of the grafted PTFE powder were characterized by Fourier transform infrared spectrometer (FTIR), X-ray photoelectron spectroscopy (XPS) and contact angle (CA) test. The surface morphology of the grafted PTFE powder was observed through scanning electron microscope (SEM). The electric potential of the grafted PTFE powder dispersion was determined by zeta potential test. The thermal stability of the grafted PTFE powder was analyzed by thermogravimetric analysis (TGA). It was found that the hydrophilicity and dispersion stability of modified PTFE powder was significantly improved with increasing grafting yield of AAc and AMPS. The PTFE powder with a grafting yield of 26. 6% can be stably dispersed in water for a long period, which was prepared in the solution with the monomer concerntration of 20% and the AAc/AMPS ratio of 2 at 70 degrees C. Water contact angle of the PTFE powder decreased from 148. 8 degrees before grafting to 30. 2 degrees after grafting. Simultaneously, the corresponding zeta potential of PTFE dispersion decreased from -4. 3 mV to -83. 4 mV.
KeywordPtfe Acrylic Acid 2-acrylamide-2-methylpropanesulfonic Acid Hydrophilic Pre-irradiation Grafting
DOI10.11777/j.issn1000-3304.2016.16009
Indexed BySCI
Language中文
WOS IDWOS:000384870700011
Citation statistics
Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/26603
Collection中科院上海应用物理研究所2011-2018年
Corresponding AuthorWu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
Recommended Citation
GB/T 7714
Li, H,Zeng, HY,Xing, Z,et al. Preparation of High Hydrophilic PTFE Powder and Its Dispersion Stability[J]. ACTA POLYMERICA SINICA,2016(9):1247-1253.
APA Li, H.,Zeng, HY.,Xing, Z.,Li, R.,Gao, QH.,...&Wu, GZ .(2016).Preparation of High Hydrophilic PTFE Powder and Its Dispersion Stability.ACTA POLYMERICA SINICA(9),1247-1253.
MLA Li, H,et al."Preparation of High Hydrophilic PTFE Powder and Its Dispersion Stability".ACTA POLYMERICA SINICA .9(2016):1247-1253.
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