Aqueous dispersion and tuning surface charges of polytetrafluoroethylene particles by bioinspired polydopamine-polyethyleneimine coating via one-step method

被引：11

作者：

Grewal, Manjit Singh ^{[1
]}

Abe, Hiroya ^{[2
]}

Matsuo, Yasutaka ^{[3
]}

Yabu, Hiroshi ^{[1
]}

机构：

[1] Tohoku Univ, WPI Adv Inst Mat Res WPI AIMR, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[2] Tohoku Univ, Frontier Res Inst Interdisciplinary Sci, 2-1-1 Katahira, Sendai, Miyagi 9808577, Japan

[3] Hokkaido Univ, Res Inst Elect Sci RIES, Kita Ku, N21W10, Sapporo, Hokkaido 0010021, Japan

来源：

ROYAL SOCIETY OPEN SCIENCE | 2021年 / 8卷 / 08期

关键词：

polydopamine; polytetrafluoroethylene; polyethyleneimine; surface charges; nanoparticles; POLY(TETRAFLUOROETHYLENE) FILMS; FRICTION; WEAR; NANOPARTICLES; POLYMERIZATION; PERFORMANCE; COMPOSITES; DEPOSITION; CHEMISTRY; DOPAMINE;

D O I：

10.1098/rsos.210582

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

We propose a surface modification of poorly dispersive polytetrafluoroethylene (PTFE) particles via bioinspired polydopamine-polyethyleneimine (PDA-PEI) which conferred PTFE particles a uniform dispersion in aqueous medium. With increasing dopamine concentration in the reaction solution, dispersity of PTFE particles improved and the surface charges of particles changed from negative to positive due to an increase of surface coverage of PDA-PEI layers. Simplicity of the method here outlines an attractive route for surface modification of inert surfaces useful for large-scale applications.

引用

页数：8

共 45 条

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