低温等离子体对聚酯织物改性效果研究

运用氧气低温等离子体对聚酯织物进行处理，对聚酯纤维及其织物在经处理前后染色过程、染色效果及表面性质、超分子结构的变化进行了讨论。证明氧气低温等离子体可以有效地提高分散染料对聚酯织物的初染率及平衡上染率，并使染色效果具有深色效应；同时，氧气低温等离子体还可以明显提高聚酯织物的亲水性和其纤维大分子柔顺性，使织物的吸水性明显增强，纤维的结晶度和取向度下降。     

涤纶表面改性研究的进展

介绍了近年来国内外涤纶表面改性的原理、方法、应用以及各种常用表征方法。对等离子体处理方法的3个方面的应用做了详细阐述;介绍了紫外光接枝方法的原理、应用,以及近年来对该方法的改进;阐述了碱处理的原理、应用及近年来的发展趋势。     

涤纶表面亲水改性研究进展

探讨了涤纶织物表面亲水改性方法的研究现状.详细综述了表面形态结构的物理改性、化学改性、表面接枝改性、复合整理法等目前主要的表面亲水改性方法,并分别介绍这些方法主要研究进展及其优缺点.认为:涤纶表面亲水改性是涤纶表面功能性整理的一部分;在不影响涤纶原有的性能下,低成本、无污染且耐久性好和设备要求低等特点将是最为理想的工业...     

利用低温等离子体对PET工业长丝的表面改性

应用外部电容耦合式低温等离子体处理装置．在不同处理条件下，对PET工业长丝进行表面改性。并通过失重、回潮率和染色实验等方法，研究了处理前后样品的吸湿性、染色性等的变化。结果表明，处理后样品的吸湿性有较大提高，可达到未处理样品的2倍；经处理后的涤纶纤维对分散性染料的染色有一定的改善作用；处理后样品的失重随处理时间的延长而增加，而其强度几乎无变化。     

涤纶织物的丝胶改性和染色工艺研究

涤纶织物通过丝胶处理后,吸湿性、抗静电性和回潮率有了明显的提高,改善了涤纶织物的服用性能。用酸性染料对处理后的涤纶织物进行染色,染色均匀。经固色后,取得了较高的染色牢度。     

碳纤维冷等离子体表面改性研究

本文研究了表面处理工艺影响、力学性能的变化，探讨了冷等离子体表面改性机制。     

高分子材料的等离子体表面改性

概述了低温等离子体技术在高分子材料表面改性方面的应用,主要包括以下三方面内容:在Ar、He、N_2、O_2、NH_3等气体辉光放电过程中对聚合物表面的等离子体处理;等离子体表面接枝;在聚合物表面淀积超薄等离子体聚合膜.并对这一技术的应用领域进行了介绍。     

Surface modification of polyester films by RF plasma

Plasma treatment of PET films was carried out under argon, followed by exposure to an oxygen atmosphere. The films underwent considerable changes in surface composition and morphology, as demonstrated by contact angle measurements, FTIR‐ATR, AFM, and XPS. It was found that the surface acquired oxygen containing polar functional groups such as —C=O, —OH, and —OOH, which increased in number as the plasma treatment time increased. During storage, the treated films underwent significant surface reorganization, and both the time and temperature contributed to the increase in the contact angle. As revealed by AFM measurements, these changes were accompanied by an increase in roughness in the form of ridges. The ridges were observed to grow in height with increasing treatment time, although their spacing showed little evolution. A correlation among the observations obtained from various techniques was established, giving a comprehensive picture of the structure and dynamics of plasma‐treated PET surfaces. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1083–1091, 2000     

聚酯纤维的低温等离子体表面改性

探讨了聚酯纤维氩气低温等离子体处理的工作条件及处理后纤维的性能和表面形态。结果表明 ,在本实验条件下 ,聚酯纤维经氩气低温等离子体处理后 ,表面形成刻蚀 ,吸湿性明显提高 ,其力学性能和热性能变化不大     

Surface modification of polyester and polyamide fabrics by low frequency plasma polymerization of acrylic acid

In this study, the surface characteristics of polyester and polyamide fabrics were changed by plasma polymerization technique utilizing acrylic acid as precursor. This monomer was used to produce hydrophilic materials with extended absorbency. The hydrophilicity, total wrinkle recovery angle (WRA°) and breaking strength of the fabrics were determined prior and after plasma polymerization treatment. The modification of surfaces was carried out at low pressure (<100 Pa) and low temperature (<50°C) plasma conditions. The effects of exposure time and discharge power parameters were optimized by comparing properties of the fabrics before and after plasma polymerization treatments. It was shown that two sides of polyester fabric samples were treated equally and homogeneously in plasma reactor. For polyester fabrics, the minimum wetting time, 0.5 s, was observed at two plasma processing parameters of 10 W–45 min and 10 W–20 min, where untreated fabric has a wetting time of 6 s. For polyester fabrics, the maximum value was obtained at 60 W–5 min with the wrinkle recovery angle of 306° where the untreated fabric has 290°. The optimum plasma conditions for polyamide fabrics were determined as 30 W–45 min where 2 s wetting time was observed. Wrinkle recovery angle of untreated polyamide fabric was 264°. In this study, after plasma polymerization of acrylic acid, wrinkle recovery angle values were increased by 13%. No significant change was observed in breaking strength of both fabrics after plasma treatment. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci 104: 2318–2322, 2007     

Surface modification of aromatic polyamide film by remote oxygen plasma

Surface modification of poly(p-phenylene terephthalamide) (PPTA) film by a remote oxygen plasma treatment has been investigated from a viewpoint of comparison with a direct oxygen plasma treatment. We call the modification procedure in a space far away from the oxygen plasma zone “the remote oxygen plasma treatment,” and the modification procedure in a space just in the oxygen plasma zone (a conventional oxygen plasma treatment) “the direct oxygen plasma treatment.” In a space far away from the plasma zone, oxygen radicals rather than electrons and oxygen ions are predominant, and the PPTA film can be modified by the remote oxygen plasma treatment into a hydrophilic surface without heavy degradation of the PPTA film. The PPTA film surfaces modified by the remote oxygen plasma treatment were analyzed with contact angle measurement, scanning microscopy, atomic force microscopy, and X-ray photoelectron spectroscopy. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 64: 831–840, 1997     

Surface modification of polypropylene membrane by low‐temperature plasma treatment

Microporous polypropylene membranes were low temperature plasma treated with acrylic acid and allylamine. Parameters of plasma treatment were examined and optimized for the enhancement of membrane performance properties. Excess power damaged the membrane surface and excess monomer flow rate increased the reactor pressure to interfere with the glow discharge. Longer plasma treatment time resulted in even more plasma coating and micropore blocking. The contact angle with water decreased and wettabilities increased with the increase of plasma treatment time. Deposition of the plasma polymer on the membrane surface was confirmed by FTIR/ATR spectra of the treated surface. In determining the flux, the hydrophilicity of the surface played a role as important as that of the micropore size. Adequate plasma treatment could enhance both water flux and solute removal efficiency. Results from the BSA (bovine serum albumin) solution test confirmed that fouling was greatly reduced after the plasma treatment. The BSA solution flux through the plasma‐treated membranes depended on pH, whereas pH variation had no serious effects on the untreated membrane. Modification of the surface charge by the plasma treatment should exert a substantial influence on the adsorption and removal of BSA. © 2001 John Wiley & Sons, Inc. J Appl Polym Sci 81: 1555–1566, 2001     

聚酯纤维的染色改性

叙述了聚酯纤维染色物理和化学的改性方法 ,其中对于采用共聚方法制得的阳离子染料可染聚酯进行了详细阐述 ,并叙述了国内外聚酯纤维染色的发展简况。     

低温等离子体对UHMWPE纤维的表面改性

运用自行研制的常压低温等离子体设备对超高相对分子质量聚乙烯(UHMWPE)纤维进行了表面处理,选用正交试验法通过润湿性测试优化出不同工作气氛下的工艺条件,采用强力测试、扫描电镜(SEM)和光电子能谱仪(XPS)分析了等离子体处理前后UHMWPE纤维的性能变化。结果表明,常压低温等离子体在Ar携带丙烯酸和Ar／O2的气氛下处理UHMWPE纤维,表面改性效果良好。特别是选用Ar／O2流量比100:1,处理速度为5．8 m／min,输出功率189 W,可满足连续化生产。     

Surface biomedical effects of plasma on polyetherurethane

Surface biomedical effects of plasma treatment and plasma polymerization on medical-grade polyetherurethane were studied. N₂ and Ar plasma treatments and hexamethyldisiloxane (HMDS) plasma polymerization were performed at a power of 100 W with exposure times ranging from 1 to 15 min. The results showed that the contact angle of water was decreased from 79° to 62° by N₂ and Ar plasma treatments, and N₂ plasma treatment caused a slight enhancement in anti-coagulability and anti-calcific behavior. HMDS polymerization resulted in a decrease from 79° to 43° in the contact angle and an increase from 30.5 to 37.4 s in the recalcification time. At the same time, the anti-coagulability of polymerized samples for the exposure time of 2-5 min was 2.5 times that of the untreated sample. Results of XPS and ESR analyses showed that HMDS deposited onto the polyetherurethane surface and formed new Si-N bonds, and increased the number of radicals in the sample. XPS analysis also showed that N₂ and Ar plasma treatments broke some of the C-O and C=O bonds at the surface and resulted in oxidation of the surface.     

超支化聚酯的合成及其对PET纤维的改性研究

以三羟甲基丙烷作为中心核,二羟甲基丙酸为合成单体,对甲苯磺酸作为催化剂,采用一步法分别合成了第二代、第三代、第四代不同代数的端羟基超支化聚酯(HBP),并对其结构进行了表征.将不同代数的HBP与聚对苯二甲酸乙二醇酯(PET)共混纺丝制备了HBP/PET共混纤维,研究了纤维的流变性能、力学性能、染色性能和吸湿性能.结果表...     

低温等离子体对多孔材料的表面改性研究进展

多孔材料在化工和高新技术领域应用广泛,对其表面进行改性成为近年研究热点.而低温等离子体技术是近来快速发展的材料表面改性技术,在不影响材料基体性能的前提下改善材料表面的物理化学性质,具有广阔的应用前景.在总结国内外科研成果的基础上,介绍了低温等离子体对多孔材料的表面改性原理,综述了现阶段该技术的研究进展,指出了今后研究发展方向.