Comparison of Polymer Materials Containing Sulfur to Conventional Rubber Vulcanizates in Terms of their Ability to the Surface Modification of Iron

2014 ◽  
pp. 15-32
Author(s):  
Dariusz Bieliński ◽  
Mariusz Siciński ◽  
Jacek Grams ◽  
Michał Wiatrowski
Keyword(s):  
Surface Modification ◽  
Polymer Materials

Analysis on surface modification of orthodontic power chain by nanoimprinting process

2014 ◽  
Vol 34 (3) ◽  
pp. 209-217
Author(s):  
Hsing-Chung Cheng ◽  
Wan-Tin Lin ◽  
Yung-Kang Shen ◽  
Yen-Hsiang Wang
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Surface Treatment ◽  
Water Absorption ◽  
Process Parameters ◽  
Pure Aluminum ◽  
Polymer Materials ◽  
Hydrophobic Properties ◽  
Water Absorbance

Abstract The traditional orthodontic power chain, usually made of polymer materials, exists some drawbacks, such as the reduction of elasticity due to swell after absorbing water and surface discoloration resulting from the patient’s diet, food, or beverage colors leading to poor appearance. The main purpose of this study was to develop surface modification on orthodontic power chain and to realize the properties change for improvement of its shortcomings. In this study, a template was produced by pure aluminum piece with anodized production (concave) through the nanoimprinting process fabricating nanostructures (convex) on the surface of power chain, resulting in surface modification of power chain. The different nanoimprinting process parameters (e.g., imprinting temperature, imprinting pressure, imprinting time, and demolding temperature) were used to produce nanostructures on the surface of power chain. The results of this study show that the contact angle of the power chain became larger after nanoimprinting surface treatment. The hydrophilic properties of power chain have been turned into hydrophobic properties. Unmodified power chain before water absorption is about 4%, while a modified water absorbance is about 2%–4%.

Functional coatings formed on the titanium and magnesium alloys as implant materials by plasma electrolytic oxidation technology: fundamental principles and synthesis conditions

2016 ◽  
Vol 34 (1-2) ◽  
pp. 65-83 ◽  
Author(s):  
Sergey Vasilievich Gnedenkov ◽  
Yurii Petrovich Sharkeev ◽  
Sergey Leonidovich Sinebryukhov ◽  
Olga Alekseevna Khrisanfova ◽  
Elena Viktorovna Legostaeva ◽  
...  
Keyword(s):  
Surface Modification ◽  
Plasma Electrolytic Oxidation ◽  
Polymer Materials ◽  
Functional Coatings ◽  
Average Life Span ◽  
Advantages And Disadvantages ◽  
Metallic Implants ◽  
Electrolytic Oxidation ◽  
Oxidation Technology ◽  
Plasma Electrolytic

AbstractMetallic implants have been successfully used in medicine for the past 60–70 years. Historically, implants were designed only as mechanical devices, whereas the biological aspects of their application were beyond the researchers’ interest. The improvement of living conditions and the increase of the average life span have changed the situation. The clinical requirements for medical implants rise up substantially. Presently, it seems impossible to imagine the use of metallic implants in the human body without preliminary surface modification to modulate the interaction between the surrounding biological environment and the implant. The review highlights the most recent advances in the field of functional coatings formed on implants by the plasma electrolytic oxidation technology. Special attention is dedicated to the principles of surface modification of the commercially pure titanium, titanium nickelide, and Mg-Mn-Ce magnesium alloy. The advantages and disadvantages of the method and the characteristics of these materials are discussed from this point of view. Some aspects of this review are aimed at corrosion protection of implants with application of polymer materials.

Polymer Surface Modification

1992 ◽  
Vol 65 (3) ◽  
pp. 687-696 ◽  
Author(s):  
Walter H. Waddell ◽  
Larry R. Evans ◽  
James G. Gillick ◽  
Derek Shuttleworth
Keyword(s):  
Surface Modification ◽  
Scientific Literature ◽  
Ion Beam ◽  
Polymer Surface ◽  
Polymeric Materials ◽  
High Energy ◽  
Polymer Materials ◽  
Diverse Range ◽  
Rubber Industry ◽  
Wide Range

Abstract Surface modification as a technology has been employed in various ways for many years, however, the breadth and magnitude of its applications have grown significantly during the last decade. Much of this growth has been facilitated by the development and spread of rapid and reliable surface characterization techniques. And, as would be expected of a maturing field, the bulk of investigations are now turning to applications rather than a pure understanding. Publications in both the scientific literature and patents describe research on a diverse range of polymeric substrates and potential applications using a wide range of modification techniques. Methods include chemical, photochemical, and high-energy physical techniques to modify polymer surfaces. Searches were made of these methods as applied to the surface modification of polymeric materials of particular interest to the rubber industry. Chemical methods include reactions such as halogenation, addition, etching, and oxidation. Photochemical techniques include surface reactions such as oxidative and nonoxidative degradation, halogenation, and photografting. Physical methods include corona discharge, plasma, electron and ion beam treatments. The 1980's literature on these subjects is published in a variety of languages, including a number of informative review articles and books printed in English on various aspects of this subject. The subject of this review concentrates on the surface modification of polymeric materials of particular interest to the rubber industry by focussing largely on scientific literature published in English and patent literature published during this time period that describe interesting and useful surface chemistry on elastomer substrates and rubber articles containing polymers such as natural rubber, cis-polyisoprene, styrene-butadiene copolymer, nitrile rubber, silicone, etc, and fibers and fabric made from fiber-forming polymer materials such as aramid, nylon, polyester, and carbon fiber, and those techniques reported successful in altering their surfaces. For organizational simplicity, three basic categories are used: elastomers, fibers and others. The latter category refers to those substrates without specific, current application in the rubber industry, but which have interesting or novel scientific features. Restriction of interest to rubber-relevant materials greatly reduced the scope of this work, and the interested reader should be aware that a great deal of activity is to be found in the rigid plastic and, to a lesser extent, biopolymer industries.

Research on the PDMS Surface Modification Technique

2013 ◽  
Vol 562-565 ◽  
pp. 131-135
Author(s):  
Li Tian ◽  
Lei Wu ◽  
Wei Wang ◽  
Xiao Wei Liu
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Polymer Materials ◽  
Oxygen Plasma Treatment ◽  
Pdms Surface ◽  
Coating Technique ◽  
Long Time ◽  
Aging Property ◽  
Modification Technique ◽  
Hydrophilic Character

UV radiation, oxygen plasma treatment and dynamical coating technique were the three main modification techniques to be widely applied in the surface modification of polymer materials. This paper presented the experiment results of PDMS surface modification with these three techniques. The contact angle was measured to test the modification effect, also the further verification testing of aging property after a long time storage were carried out. Of all the testing results, the dynamical coating technique, 10 layers 0.02% PDDA and PSS (V/V) alternatively adhesion on the PDMS surface, made the contact angle lowed to the 21°, and even after 15 days, it still kept as the 61°and exhibited the better hydrophilic character.

UV/ozone Surface Modification for Long-term Stable Hydrophilic Surface of Polymer Microfluidic Devices

MRS Advances ◽  
2016 ◽  
Vol 1 (11) ◽  
pp. 743-748 ◽  
Author(s):  
Shogo Uehara ◽  
Tsukasa Kawabe ◽  
Peter Wood ◽  
Osamu Tsuji
Keyword(s):  
Surface Modification ◽  
Temperature Control ◽  
Polymer Materials ◽  
Ex Situ ◽  
Ozone Treatment ◽  
Oxygen Plasma Treatment ◽  
Hydrophilic Surfaces ◽  
Hydrophobic Recovery ◽  
Uv Ozone

ABSTRACTFaster and more effective surface modification processes of polymer materials by UV/ozone treatment were investigated. The employment of ex-situ generated ozone and/or temperature control contributed to the faster and more effective modification. The UV/ozone treatment showed long-term stable hydrophilic surfaces for 6 months, in contrast to oxygen plasma treatment, which showed hydrophobic recovery. XPS analysis revealed that UV/ozone treatment with ex-situ generated ozone and temperature control added ester (-COOR) on COP sample compared to UV/ozone treatment without the additional ozone and temperature control.

Plasma-Enhanced Surface Modification of Biopolymers

2005 ◽  
Author(s):  
K. Komvopoulos
Keyword(s):  
Surface Modification ◽  
Effective Means ◽  
Polymer Surface ◽  
Chemical Properties ◽  
Biochemical Properties ◽  
Polymer Surfaces ◽  
Polymer Materials ◽  
Rf Plasma ◽  
Main Process ◽  
Enhanced Surface

Recent advances in polymer surface science have been largely due to the well-recognized need to control the surface properties of polymer materials and the development of sophisticated surface-specific characterization techniques. While the majority of the research and development efforts have been mostly focused on bulk properties, demands for low surface energy polymers exhibiting low adhesion (friction) and good biocompatibility have generated significant interest on physical and chemical properties of polymer surfaces. For instance, ultra-high molecular weight polyethylene (UHMWPE) and low-density polyethylene (LDPE) are the principal materials used to replace damaged cartilage in total joint arthroplasty and to fabricate catheters for balloon angioplasty, respectively. Therefore, surface treatments to improve adhesion and biocompatibility of these polymer surfaces are of paramount importance in the medical field. Radio frequency (rf) plasma-enhanced surface modification (PESM) provides an effective means for altering the biochemical properties of polymer surfaces without affecting the bulk behavior. The main process steps of PESM are discussed here and its effectiveness is demonstrated by representative friction coefficient, contact angle, and biocompatibility results for LDPE and UHMWPE surfaces treated with various plasma chemistries.

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