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Surface Modification of Poly Vinyl Chloride (PVC) Using Low Pressure Argon and Oxygen Plasma

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Plasma Science and Technology 2010年第2期12卷 204-207页

作者： Mahmood GHORANNEVISS Sheila SHAHIDI jakub wiener Plasma Physics Research Center Science and Research Branch Islamic Azad University Department of Textile Chemistry Faculty of Textile Technical University of Liberec

In this study, commercial poly vinyl chloride （PVC） films were treated by oxygen and argon plasmas in a cylindrical glass tube which was surrounded by a DC variable magnetic field, with different sample positions in the plasma reactor and also different exposure durations. Effects of the plasma treatment on the hydrophilic properties of the films were studied by mea- suring the water drop contact angle on the surface of the samples. The surface topography of the untreated and plasma treated films was analyzed and compared by atomic force microscopy （AFM）. The optical characteristic changes in treated samples were investigated using reflective spectrophotometry. Also, the chemical changes which appeared on the surface of the samples were investigated using Fourier transform infrared spectroscopy （FTIR）. The results show that the plasma treated PVC becomes more hydrophilic with an enhanced wettability. A sharp de- crease in the water contact angle may also be a consequence of the surface texturization. The aging effect on wettability of the samples was also investigated. The results show that the effect of oxygen plasma on the surface properties of the samples is more pronounced compared with that of argon plasma.

关键词： plasma surface modification poly vinyl chloride

Effect of Electron Irradiation on Polypropylene Films

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Plasma Science and Technology 2011年第2期13卷 194-196页

作者： Sheila SHAHIDI jakub wiener Mahmood GHORANNEVISS Abbas ANVARI Department of Textile Chemistry Faculty of Textile Technical University of Liberec Plasma Physics Research Center Science and Research Branch Islamic Azad University Departments of Physics Sharif University of Technology

Effects of both electron beam irradiation on the properties of polypropylene （PP） films and the irradiation on the different layers of a multilayer PP film are studied. A Fourier transform infrared spectroscope was used to investigate the chemical structure of the films. The results showed that the chemical properties of the first layer were improved, that is, more functional groups responsible for dye ability and hydrophilicity of the film were produced on its surface, while noticeable improvement was not detected on the surface of other layers. This was also confirmed by testing the dye ability of the layers. However, the results obtained by atomic force microscopy showed that the electron irradiation caused some topographical changes, not only on the surface of the first layer but also on the others.

关键词： polypropylene electron beam dye ability film

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Dynamics of Wicking

Journal of Donghua University(English Edition) 2002年第3期19卷 77-79页

作者： jakub wiener Technical University of Liberec Czech republic

An exponential model is proposed for the description of wicking, which is suitable for describing the whole process of wicking. Results are discussed and verified by the experimental data. Exponential model can be use... 详细信息

关键词： wicking process, capillary, wicking dynamics.

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纸纱∕再生涤复合纱及其针织面料的性能

现代纺织技术 2023年第2期31卷 152-158页

作者：胡蝶飞王琰姚菊明夏新兴张国庆 DANA Kremenakova JIRI Militky jakub wiener 祝国成浙江理工大学纺织科学与工程学院杭州310018 浙江理工大学材料科学与工程学院杭州310018 浙江理工大学浙江-捷克先进纤维材料联合实验室杭州310018 浙江理工大学象山针织研究院浙江象山315700 宁波大学材料科学与化学工程学院浙江宁波315201 利贝雷茨理工大学纺织工程学院捷克利贝雷茨46117

为了探究纸纱/再生涤纶复合纱的可织性及其针织面料的综合服用性,采用MACH2SIG全自动电脑横机将纸纱/再生涤纶(100/0、70/30、60/40)3种复合纱编织成纬平针织物,测试纸纱/再生涤纶复合纱的条干均匀度、力学性能以及针织物的热阻、透气... 详细信息

为了探究纸纱/再生涤纶复合纱的可织性及其针织面料的综合服用性,采用MACH2SIG全自动电脑横机将纸纱/再生涤纶(100/0、70/30、60/40)3种复合纱编织成纬平针织物,测试纸纱/再生涤纶复合纱的条干均匀度、力学性能以及针织物的热阻、透气性、透湿性、悬垂性、折皱弹性和力学性能。利用模糊数学综合评价方法对测试结果进行分析,对纸纱/再生涤纶织物的服用舒适性做出综合评价。结果表明:随再生涤纶含量比例增加,复合纱的条干均匀度下降,断裂强力和断裂伸长率提高;3种针织物经模糊综合评价所得的评判值分别为0.2942、0.3311和0.3737。依据最大隶属度原则,纸纱/再生涤纶(60/40)织物的综合服用性能最佳。

关键词：纸纱纸纱/再生涤纶复合纱服用性舒适性模糊综合评价

维普期刊数据库博看期刊

不同纤维结构特性下纤维集合体过滤性能的DPM数值模拟

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纺织工程学报 2023年第5期1卷 78-89页

作者：刘倩倩尤健明王琰孙成磊 Jiri Militky Dana Kremenakova jakub wiener 祝国成浙江理工大学纺织科学与工程学院杭州310018 浙江-捷克先进纤维材料联合实验室浙江理工大学杭州310018 浙江朝晖过滤技术股份有限公司浙江嘉兴314511 利贝雷茨理工大学纺织工程学院捷克利贝雷茨46117 现代纺织技术创新中心(鉴湖实验室) 浙江绍兴312000

为了探究过滤风速、纤维直径、纤维固体体积分数、纤维层厚度、纤维排列方式对纤维集合体内部气流速度分布、压力损失、过滤效率的影响,通过观察分析真实滤料结构特征和表面形态,利用Matlab随机算法,Solidworks建模软件生成直径为3-5μ... 详细信息

为了探究过滤风速、纤维直径、纤维固体体积分数、纤维层厚度、纤维排列方式对纤维集合体内部气流速度分布、压力损失、过滤效率的影响,通过观察分析真实滤料结构特征和表面形态,利用Matlab随机算法,Solidworks建模软件生成直径为3-5μm、在空间中随机分布的三维纤维集合体,利用Digimat纤维建模软件生成纤维排列方向平行于X轴的三维纤维集合体,结合计算流体力学方法,基于拉格朗日离散模型和Laminar流场,利用雷诺相似准则对微米纤维模型内部气-固两相流动情况进行数值模拟。结果表明:过滤风速的增大对纤维集合体内部气相流场的影响表现为无规律性,纤维集合体内部压力损失随过滤风速的增大而增大;纤维过滤效率和压力损失随纤维固体体积分数、纤维层厚度的增大而增大;过滤效率和压力损失随着纤维直径的增大而减小;平行于X轴排列的纤维集合体的过滤效率和压力损失较空间随机分布纤维集合体的高。

关键词： CFD 纤维结构过滤效率数值模拟压力损失

Determination of Contact Angle Hysteresis on Polyamide Surfaces

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Journal of Chemistry and Chemical Engineering 2012年第1期6卷 27-30页

作者： Marcela Bachurova jakub wiener Department of Textile Chemistry Faculty of Textile Engineering Technical University of Liberec Liberec CZ-46117 CzechRepublic

The wettability of the solid surface is often characterized by the contact angle of the liquid on the solid surface. However, it has long been found that the contact angle of liquid on a solid surface can take a range of values between two extremes: the advancing and the receding contact angles. The difference between the advancing and the receding contact angles is conventionally called contact angle hysteresis. Knowledge of contact angle hysteresis is essential to understand surface wettability and control surface wetting behavior. The wettability can be affected, for example, by the roughness of the solid surface. In our work, textile is used as macroscopic roughness surfaces, and smooth plate surface is used as well to determine contact angle hysteresis. The advancing and receding contact angles are measured on polyamide materials.

关键词：接触角滞后固体表面聚酰胺测定接触角测量润湿性表面润湿粗糙度