The electrostatic self-assembly of microgels on polymer brushes andits effects on interfacial friction | |
Department | 固体润滑国家重点实验室 |
Zhang R(张冉)1,2; Ma SH(麻拴红)1; Liu GQ(刘国强)1; Cai MR(蔡美荣)1; Ye Q(叶谦)1; Yu B(于波)1; Zhou F(周峰)1; Ye Q(叶谦); Yu B(于波); Zhou F(周峰) | |
2016 | |
Source Publication | Journal of Applied Polymer Science |
ISSN | 0021-8995 |
Volume | 133Issue:46Pages:44215(1-7) |
Abstract | In this article, a series of monodisperse poly(N-isopropylacrylamide-co-acrylic acid) [P(NIPAm-AA)] microgels were prepared with different content of acrylic acid (AA) by surfactant-free emulsion polymerization, and their electrostatic self-assemble and tribological behavior on polymer brushes were investigated. The ζ-potential of microgels became more negative with the increase content of AA, which means a stronger hydration capability. For cationic poly[2-(methacryloyloxy)ethyltrimethylammonium chloride] (PMETAC) brushes, negative P(NIPAm-AA) microgels adsorbed on the surfaces of brushes as a result of the electrostatic interaction, and more AA content means stronger absorption ability. However, compared to the polymer brushes, P(NIPAm-AA)2:1 and P(NIPAm-AA)5:1 microgels possessed the weaker hydration capability, which led to a concomitant increase in friction of interface. In terms of P(NIPAm-AA)10:1 microgels, due to the weak adsorption, they could be sheared off easily, leading to the PMETAC brushes swell again, and thus, a lower friction of interface was obtained. Moreover, the tribological behavior of microgels was significantly affected by the pH, especially the P(NIPAm-AA)2:1 microgels exhibited good lubrication property in high pH solution due to high hydration of deprotonated carboxylic acid groups. |
Keyword | Friction Hydrophilic Polymers Microgels Wear And Lubrication |
Subject Area | 材料科学与物理化学 |
DOI | 10.1002/app.44215 |
Funding Organization | NSFC (21434009;21204095;51573199);Youth Innovation Promotion Association CAS |
Indexed By | SCI |
If | 1.860 |
Language | 英语 |
Funding Project | 材料表面与界面行为研究组 |
compositor | 第一作者单位 |
Citation statistics | |
Document Type | 期刊论文 |
Identifier | http://ir.licp.cn/handle/362003/20363 |
Collection | 固体润滑国家重点实验室(LSL) |
Corresponding Author | Ye Q(叶谦); Yu B(于波); Zhou F(周峰) |
Affiliation | 1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Solid Lubricat, Tianshui Middle Rd, Lanzhou 730000, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
Recommended Citation GB/T 7714 | Zhang R,Ma SH,Liu GQ,et al. The electrostatic self-assembly of microgels on polymer brushes andits effects on interfacial friction[J]. Journal of Applied Polymer Science,2016,133(46):44215(1-7). |
APA | Zhang R.,Ma SH.,Liu GQ.,Cai MR.,Ye Q.,...&周峰.(2016).The electrostatic self-assembly of microgels on polymer brushes andits effects on interfacial friction.Journal of Applied Polymer Science,133(46),44215(1-7). |
MLA | Zhang R,et al."The electrostatic self-assembly of microgels on polymer brushes andits effects on interfacial friction".Journal of Applied Polymer Science 133.46(2016):44215(1-7). |
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