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
发表期刊ACTA POLYMERICA SINICA
ISSN1000-3304
期号9页码:1247-1253
文章类型期刊论文
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.
关键词Ptfe Acrylic Acid 2-acrylamide-2-methylpropanesulfonic Acid Hydrophilic Pre-irradiation Grafting
DOI10.11777/j.issn1000-3304.2016.16009
收录类别SCI
语种中文
WOS记录号WOS:000384870700011
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/26603
专题中科院上海应用物理研究所2011-2018年
通讯作者Wu, GZ (reprint author), Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China.
推荐引用方式
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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