利用脉冲水下隔膜放电实现丙烯酸在聚丙烯无纺布上的等离子诱导聚合和接枝

IF 2.6 3区 物理与天体物理 Q3 ENGINEERING, CHEMICAL Plasma Chemistry and Plasma Processing Pub Date : 2024-02-23 DOI:10.1007/s11090-024-10454-y
Dušan Kováčik, Petra Šrámková, Patrícia Multáňová, Monika Stupavská, Seyedehneda Siadati, Pavol Ďurina, Anna Zahoranová
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引用次数: 0

摘要

聚丙烯(PP)无纺布因其低成本、高耐化学性和惰性而被广泛应用于卫生、保健和医疗产品中。从经济角度来看,聚丙烯纺织品可作为再生医学或组织工程中的绝佳支撑材料,但为了确保细胞的粘附和增殖,必须进行表面功能化处理。丙烯酸(AAc)是富含羧基(-COOH)涂层的极佳来源,但其多步骤制备非常耗时。等离子聚合为这一高难度程序提供了极佳的解决方案,因为聚合和接枝到基底的过程是同时进行的。在此,我们提出了一种相对快速有效的 AAc 等离子聚合方法,即在含有 AAc 的水溶液中使用脉冲水下隔膜放电。AAc 层被成功接枝到 PP 无纺布上,而 PP 无纺布则通过产生等离子体的狭缝不断回卷。通过扫描电镜、傅立叶变换红外光谱和 XPS 测量,监测了等离子聚合的 AAc 层在聚丙烯无纺布纤维结构中的存在情况。此外,还通过临界润湿表面张力(CWST)法、标准击穿时间(STT)法和 "胶带剥离 "试验研究了改进后的润湿性和粘附特性。结果表明,AAc 改性聚丙烯无纺布具有亲水性、粘附性和表面大量的 -COOH 基团。虽然在水洗试验后,傅立叶变换红外光谱和 XPS 结果表明羧基的浓度降低了,但 CWST 和 STT 测量结果证实 PP 无纺布表面具有稳定的亲水性。
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Plasma-induced Polymerization and Grafting of Acrylic Acid on the Polypropylene Nonwoven Fabric Using Pulsed Underwater Diaphragm Electrical Discharge

Polypropylene (PP) nonwovens are used in many hygiene, healthcare and medical products due to their low cost, high chemical resistance and inertness. From an economic point of view, PP textiles would be used as an excellent support material in regenerative medicine or tissue engineering, but here surface functionalization is necessary to ensure cell adhesion and proliferation. Acrylic acid (AAc) is an excellent source of carboxylic-rich (-COOH) coatings suitable for this purpose, but their multistep preparation is time-consuming. Plasma polymerization provides an excellent solution to this demanding procedure since the process of polymerization and grafting to the substrate takes place simultaneously. Here, we propose a relatively fast and effective method for AAc plasma polymerization by using a pulsed underwater diaphragm electrical discharge operated in an aqueous solution consisting of AAc. AAc layers are successfully grafted onto PP nonwovens, which are continuously rewound through the slit where the plasma is generated. The presence of plasma polymerized AAc layer in the fibrous structure of PP nonwoven was monitored by SEM, FTIR and XPS measurements. Additionally, the improved wettability and adhesion characteristics were investigated by the critical wetting surface tension (CWST) method, the standard method of strike-through time (STT) and „tape-peel“ test. Resulting AAc modified PP nonwoven possesses hydrophilic character, enhanced adhesion and a considerable amount of -COOH groups on the surface. Although after the washing test the FTIR and XPS results indicated a lower concentration of the carboxylic groups, the CWST and STT measurements confirmed the stable hydrophilic character of the PP nonwovens surface.

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来源期刊
Plasma Chemistry and Plasma Processing
Plasma Chemistry and Plasma Processing 工程技术-工程:化工
CiteScore
5.90
自引率
8.30%
发文量
73
审稿时长
6-12 weeks
期刊介绍: Publishing original papers on fundamental and applied research in plasma chemistry and plasma processing, the scope of this journal includes processing plasmas ranging from non-thermal plasmas to thermal plasmas, and fundamental plasma studies as well as studies of specific plasma applications. Such applications include but are not limited to plasma catalysis, environmental processing including treatment of liquids and gases, biological applications of plasmas including plasma medicine and agriculture, surface modification and deposition, powder and nanostructure synthesis, energy applications including plasma combustion and reforming, resource recovery, coupling of plasmas and electrochemistry, and plasma etching. Studies of chemical kinetics in plasmas, and the interactions of plasmas with surfaces are also solicited. It is essential that submissions include substantial consideration of the role of the plasma, for example, the relevant plasma chemistry, plasma physics or plasma–surface interactions; manuscripts that consider solely the properties of materials or substances processed using a plasma are not within the journal’s scope.
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