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题名:
Preparation of High Hydrophilic PTFE Powder and Its Dispersion Stability
作者: Li, H; Zeng, HY; Xing, Z; Li, R; Gao, QH; Wang, HL; Wu, GZ
刊名: ACTA POLYMERICA SINICA
出版日期: 2016
期号: 9, 页码:1247-1253
关键词: PTFE ; Acrylic acid ; 2-Acrylamide-2-methylpropanesulfonic acid ; Hydrophilic ; Pre-irradiation grafting
DOI: 10.11777/j.issn1000-3304.2016.16009
通讯作者: Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
文章类型: 期刊论文
英文摘要: Acrylic 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.
收录类别: SCI
语种: 中文
WOS记录号: WOS:000384870700011
ISSN号: 1000-3304
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.sinap.ac.cn/handle/331007/26603
Appears in Collections:中科院上海应用物理研究所2011-2017年_期刊论文

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Recommended Citation:
Li, H,Zeng, HY,Xing, Z,et al. Preparation of High Hydrophilic PTFE Powder and Its Dispersion Stability[J]. ACTA POLYMERICA SINICA,2016-01-01(9):1247-1253.
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文件名: Preparation of High Hydrophilic PTFE Powder and Its Dispersion Stability.pdf
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