Investigation of the time-dependent friction behavior of polyacrylamide hydrogels

被引：9
作者：
Qiu, Xiaoyong [1 ]
Yan, Yonggan [2 ,3 ,4 ,5 ]
Zhang, Guimin [6 ]
Huang, Jun [7 ]
Zhao, Yiming [7 ]
Xia, Xianglai [6 ]
Cui, Xin [8 ]
Zhang, Xiaolai [1 ]
机构：
[1] Shandong Univ, Sch Chem & Chem Engn, Key Lab Colloid, Interface Chem,Minist Educ, Jinan 250100, Shandong, Peoples R China
[2] Shandong Univ, Sch & Hosp Stomatol, Cheeloo Coll Med, Jinan 250012, Peoples R China
[3] Shandong Univ, Shandong Key Lab Oral Tissue Regenerat, Jinan 250012, Peoples R China
[4] Shandong Univ, Shandong Engn Lab Dent Mat & Oral Tissue Regenerat, Jinan 250012, Peoples R China
[5] Shandong Univ, Shandong Prov Clin Res Ctr Oral Dis, Jinan 250012, Peoples R China
[6] Natl Engn & Technol Res Ctr Chiral Pharmaceut, Linyi 276006, Shandong, Peoples R China
[7] Shandong Univ, Sch Mech Engn, Key Lab High Efficiency & Clean Mech Manufacture, Minist Educ, Jinan 250061, Shandong, Peoples R China
[8] Natl Innovat Inst Def Technol, Adv Interdisciplinary Technol Res Ctr, Beijing 100071, Peoples R China
来源：
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS | 2023年 / 659卷
基金：
中国国家自然科学基金;
关键词：
Hydrogel; Friction; Time-dependence; Relaxation mechanism; Lubrication; ELASTOHYDRODYNAMIC LUBRICATION; SURFACE; POLYETHYLENIMINE; NANOPARTICLES; ADSORPTION; CARTILAGE; HYDRATION; CHARGE;
D O I：
10.1016/j.colsurfa.2022.130753
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Hydrogels have attracted enormous frictional investigation owing to their great potential in hydration lubrication. Researchers have revealed that the lubrication behavior of hydrogel depends on a number of parameters such as contact area, sliding velocity, and solution condition. However, less effort has been devoted to understanding the time-dependent friction behavior of polymeric hydrogels. In this work, the time-dependent behavior of hydrogel friction was systematically investigated through three typical polyacrylamide hydrogels (PAM, PAMPEI, and PAM-PAA) on a rheometer. Interestingly, the friction coefficients (mu) of the hydrogels varied with time, and two distinct regimes (viz., the friction-decrease regime and friction-constant/increase regime) were
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页数：9
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