高密度聚乙烯基水凝胶复合涂层制备及其摩擦学性能

刘春荣; 刘思思; 邓宇星; 王思贤; 段尚豪; 贾海涛

高密度聚乙烯基水凝胶复合涂层制备及其摩擦学性能

1.
湘潭大学　机械工程与力学学院, 湖南湘潭411105:
2.
泰州麦迪医疗科技有限公司江苏泰州 225300

基金项目: 湖南省青年科技人才项目(2022RC1133); 湖南省制造业关键产品“揭榜挂帅”项目(2023GXGG001, 2023GXGG018)

详细信息

通讯作者:
刘思思，博士，教授，博士研究生导师,研究方向为表/界面科学与摩擦学　E-mail: liusisi@xtu.edu.cn

中图分类号: TH145.4;TB332
计量
- 文章访问数: 31
- HTML全文浏览量: 17
- 被引次数: 0
出版历程
- 收稿日期: 2024-02-01
- 修回日期: 2024-03-13
- 录用日期: 2024-03-22
- 网络出版日期: 2024-04-24

Preparation and tribological properties of high density polyethylene based hydrogel composite coating

1.
School of Mechanical Engineering and Mechanics, Xiangtan University, Hunan 411105
2.
Taizhou Med Medical Technology Co., Ltd. Taizhou, Jiangsu 225300

Funds: Hunan Youth Science and Technology Talent Project (2022RC1133) and Key Manufacturing Products Project of Hunan Province (2023GXGG001, 2023GXGG018)

摘要

摘要: 受天然关节结构启发，在高密度聚乙烯(HDPE)表面构建水凝胶涂层，从而提升材料润湿性能及承载性能。然而水凝胶与HDPE基体结合性能差易脱落，因此采用紫外诱导多巴胺(DA)聚合形成聚多巴胺(PDA)接枝在HDPE上，得到高密度聚乙烯-多巴胺(HDPE-PDA)样品，随后在HDPE-PDA表面构建纳米羟基磷灰石-聚乙烯醇(HA-PVA)水凝胶涂层，得到高密度聚乙烯基-聚多巴胺-纳米羟基磷灰石-聚乙烯醇水凝胶复合涂层(HDPE-PDA-HA-PVA)样品。研究了样品的润湿性能、生物相容性、界面结合性能及摩擦学特性等。将HDPE-PDA-HA-PVA置于分别加入Na⁺、Ca²⁺、Al³⁺的小牛血清稀释润滑(BSA)溶液中，探究了金属离子对摩擦副的影响规律。综上发现：HDPE-PDA的静态水接触角由未接枝前的94.57°降低至26.87°，抗菌性能提升98%，与水凝胶的结合力提升了84%。在摩擦学性能研究中发现，HDPE-PDA-HA-PVA在2 N载荷水润滑条件下的摩擦系数低至0.012，仅存在微量磨损。当载荷增大至5 N时，与HDPE相比平均摩擦系数和磨损量分别降低了73%和46%。在探究含金属离子的润滑溶液对摩擦学性能的影响中发现，在3 N载荷下，含Ca²⁺的润滑溶液表现出较好的润滑性能，这是由于Ca²⁺能增强材料对润滑蛋白的吸附，易形成润滑层，表现出比其他含金属离子的润滑溶液更好的润滑特性。
- 高密度聚乙烯 /
- 聚多巴胺 /
- 水凝胶 /
- 润滑剂 /
- 摩擦学性能
Abstract: Inspired by the natural joint structure, a hydrogel coating is constructed on the surface of high density polyethylene (HDPE) to improve the wettability and bearing capacity of materials. However, the adhesion between hydrogel and HDPE matrix is poor and easy to fall off, so UV induced dopamine (DA) polymerization is used to form polydopamine (PDA) grafted onto HDPE to obtain High density polyethylene-dopamine(HDPE-PDA)sample, and then nano hydroxyapatite polyvinyl alcohol (HA-PVA) hydrogel coating is constructed on the surface of HDPE-PDA to obtain High density polyethylene polydopamine nano hydroxyapatite polyvinyl alcohol hydrogel composite coating(HDPE-PDA-HA-PVA)sample. Studied the wetting performance、biocompatibility、interface bonding performance and tribological characteristics of the sample. The effect of metal ions on friction pairs was investigated by placing HDPE-PDA-HA-PVA in a diluted lubrication (BSA) solution of calf serum containing Na⁺、Ca²⁺ and Al³⁺, respectively. To sum up: it is found that the static water contact angle of HDPE-PDA is reduced from 94.57° before grafting to 26.87°, the antibacterial performance is increased by 98%, and the adhesion with hydrogel is increased by 84%. In the study of tribological properties, it was found that the friction coefficient of HDPE PDA-HA-PVA under 2 N load water lubrication conditions was as low as 0.012, with only slight wear. When the load increased to 5 N, the average friction coefficient and wear amount decreased by 73% and 46% respectively compared to HDPE. In exploring the effect of lubrication solutions containing metal ions on tribological properties, it was found that under a 3N load, lubrication solutions containing Ca²⁺ exhibited better lubrication performance. This is because Ca²⁺ can enhance the material's adsorption of lubricating proteins, easily forming a lubrication layer, and exhibiting better lubrication characteristics than other lubrication solutions containing metal ions.
- high density polyethylene /
- polydopamine /
- hydrogel /
- cartilaginous material /
- tribological properties

HTML全文

图 1 高密度聚乙烯(HDPE)、聚多巴胺(PDA)和高密度聚乙烯-聚多巴胺(HDPE-PDA)的FTIR图谱

Figure 1. FTIR spectra of high-density polyethylene (HDPE) 、polydopamine (PDA) and high-density polyethylene based polydopamine (HDPE-PDA)

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图 2 不同光照时间HDPE-PDA样品XPS精细谱

Figure 2. XPS fine spectra of HDPE-PDA samples with same illumination time

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图 3 不同样品表面形貌图

Figure 3. Surface morphology of different samples

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图 4 不同光照时间HDPE-PDA样品水接触角

Figure 4. Water contact angle of HDPE-PDA samples under different lighting times

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图 5 HDPE-PDA样品润湿机制示意图

Figure 5. Schematic diagram of wetting mechanism for HDPE-PDA samples

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图 6 不同样品生物相容性分析

Figure 6. Different sample biocompatibility analysis

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图 7 HA-PVA水凝胶与不同样品拉伸力分析

Figure 7. Tensile force analysis of HA-PVA hydrogel after stripping and different products

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图 8 HDPE-PDA基体与水凝胶涂层相互作用示意图

Figure 8. Schematic diagram of interaction between HDPE-PDA matrix and hydrogel coating

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图 9 HDPE、HDPE-PDA和HDPE-PDA-HA-PVA样品在不同载荷下摩擦系数

Figure 9. Friction coefficient of HDPE、HDPE-PDA and HDPE-PDA-HA-PVA samples under different loads

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图 10 HDPE、HDPE-PDA和HDPE-PDA-HA-PVA样品磨损机制示意图

Figure 10. Schematic diagram of wear mechanism of HDPE、HDPE-PDA and HDPE-PDA-HA-PVA samples

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图 11 不同样品5 N载荷下磨痕图

Figure 11. Wear marks of different samples under 5 N load

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图 12 HDPE-PDA-HA-PVA样品在不同润滑溶液中摩擦系数

Figure 12. Friction coefficient of HDPE-PDA-HA-PVA sample in different lubrication solutions

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图 13 HDPE-PDA-HA-PVA样品在3 N载荷下不同润滑溶液中磨痕图

Figure 13. Wear pattern of HDPE-PDA-HA-PVA sample in different lubrication solutions under 3 N load

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图 14 HDPE-PDA-HA-PVA样品在不同金属离子溶液中的润滑机制示意图

Figure 14. Schematic diagram of lubrication mechanism of HDPE-PDA-HA-PVA samples in different metal ion solutions

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表 1 溶血吸光度测试结果

Table 1. Hemolytic absorbance test results

Group	1	2	3	4	$\overline X $
Negative control	0.0253	0.0249	0.0252	0.0254	0.0252
Positive control	0.6975	0.6949	0.7001	0.6981	0.6976
HDPE	0.0269	0.0269	0.0274	0.0271	0.0270
HDPE-PDA	0.0287	0.0288	0.0287	0.0286	0.0287

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表 2 不同样品磨损量分析

Table 2. Analysis of wear amount of different products

	HDPE	HDPE-PDA	HDPE-PDA-HA/PVA
Wear width/µm	582	546	432
Wear depth /µm	6.60	6.20	4.81
Wear value/10⁻⁶ mm³(N·m)⁻¹	21.34	18.81	11.54

下载: 导出CSV

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