Surface modification of a biomedical polyethylene terephthalate (PET) by air plasma

2009 ◽  
Vol 255 (8) ◽  
pp. 4446-4451 ◽  
Author(s):  
Liqing Yang ◽  
Jierong Chen ◽  
Yafei Guo ◽  
Zheng Zhang
Keyword(s):  
Surface Modification ◽  
Polyethylene Terephthalate ◽  
Air Plasma

Utilization of air-plasma treated waste polyethylene terephthalate particles as a raw material for particleboard production

2016 ◽  
Vol 90 ◽  
pp. 188-194 ◽  
Author(s):  
Petr Klímek ◽  
Tomáš Morávek ◽  
Jozef Ráhel ◽  
Monika Stupavská ◽  
David Děcký ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Raw Material ◽  
Air Plasma ◽  
Waste Polyethylene

scholarly journals A self-boosting microwave plasma strategy tuned by air pressure for the highly efficient and controllable surface modification of carbon

RSC Advances ◽  
2021 ◽  
Vol 11 (17) ◽  
pp. 9955-9963
Author(s):  
Yanjing Liu ◽  
Jiawei He ◽  
Bing Zhang ◽  
Huacheng Zhu ◽  
Yang Yang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Carbon Fiber ◽  
High Efficiency ◽  
Microwave Plasma ◽  
Air Pressure ◽  
Air Plasma ◽  
Highly Efficient ◽  
Carbon Fiber Cloth

Microwave enabled air plasma was boosted by a carbon fiber cloth (CFC) and used for the high-efficiency surface modification of the CFC, yielding CFCs with tunable contents of oxygen and each O-containing group.

scholarly journals Hydrophobic Waxes in Ivory Nuts Affect Surface Modification by Atmospheric Air Plasma Jet

2020 ◽  
Vol 2 (2) ◽  
pp. 48-49
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Water Contact Angle ◽  
Plasma Jet ◽  
Raman Imaging ◽  
Wall Material ◽  
Air Plasma ◽  
Water Contact ◽  
Atmospheric Air ◽  
Imaging Results

Ivory nuts, produced by palms from the genus Phytelephas, possess a hard and microporous endosperm with a strong resemblance to elephant ivory. The nuts sustainable appeal made them popular as eco-friendly substitutes to ivory since they promote the development of forest communities without contributing to deforestation and animal poaching. In addition, they have been commercialized as microbeads to replace microplastics in cosmetic applications. However, this material is vulnerable to deterioration by micro-organisms and insects, as they are predominantly constituted by β-1,4-mannan, a hydrophilic polysaccharide similar to cellulose. In this context, seed endosperm was treated for 80 s by an atmospheric air plasma jet so as to modify its wettability, as plasma has been widely studied recently for seed disinfection and surface modification. Plasma treated samples were characterized by the water contact angle, AFM, and Raman imaging. Water contact angle results showed an increase from (31.5 ± 8.7)º to (78.9 ± 5.4)º, indicating incorporation of hydrophobic moieties to the sample surface. In turn, AFM images demonstrate the formation of a rough and heterogeneous coating that resembles epicuticular wax layers. Furthermore, principal component analysis of Raman imaging results evidenced contributions from wax (1156, 1170 and 1410 cm-1), carbohydrates (1020, 1080 and 1106 cm-1), and lignin (1573, 1635 and 1662 cm-1). These results indicate that plasma treatment promoted the migration of hydrophobic waxes to the surface and their crosslinking with fragmented cell wall material such as mannan, xylan, and lignin, promoting seed hydrophobization with no need for additional precursors or generation of side products.

Surface Modification of Cellulose Membrane by Air Plasma Treatment

2013 ◽  
Vol 770 ◽  
pp. 112-115
Author(s):  
Nawal Binhayeeniyi ◽  
Adinan Jehsu ◽  
Mancharee Sukpet ◽  
Safitree Nawae
Keyword(s):  
Surface Modification ◽  
Plasma Treatment ◽  
Surface Modifications ◽  
Contact Angles ◽  
Cellulose Membrane ◽  
Air Plasma ◽  
Before And After ◽  
Cellulose Membranes ◽  
Hydrophilic Membranes ◽  
Air Plasma Treatment

Low-temperature air plasma was used to treat the cellulose membranes by varying the period of time from 10 to 30 minutes. The surfaces of membranes were changed from hydrophobic to hydrophilic membranes. The contact angles of treated membranes were increased when increasing time to treat. The surface modifications of membrane before and after treated were characterized by SEM. It is shown that air plasma treatment is used to improve the roughness. The dielectric property was also studied.

Surface modification of polyethylene terephthalate films using dielectric barrier discharge driven by repetitive nanosecond pulses

2010 ◽  
Vol 22 (3) ◽  
pp. 539-544 ◽  
Author(s):  
章程 Zhang Cheng ◽  
邵涛 Shao Tao ◽  
于洋 Yu Yang ◽  
龙凯华 Long Kaihua ◽  
王珏 Wang Jue ◽  
...  
Keyword(s):  
Surface Modification ◽  
Dielectric Barrier Discharge ◽  
Polyethylene Terephthalate ◽  
Barrier Discharge ◽  
Dielectric Barrier ◽  
Nanosecond Pulses

scholarly journals Anticoagulant Polyethylene Terephthalate Surface by Plasma-Mediated Fucoidan Immobilization

Polymers ◽  
2019 ◽  
Vol 11 (5) ◽  
pp. 750 ◽  
Author(s):  
Kadir Ozaltin ◽  
Marian Lehocky ◽  
Petr Humpolicek ◽  
Jana Pelkova ◽  
Antonio Di Martino ◽  
...  
Keyword(s):  
Polyethylene Terephthalate ◽  
Photoelectron Spectroscopy ◽  
Anticoagulant Activity ◽  
Blood Clot ◽  
Clot Formation ◽  
Thrombin Time ◽  
Air Plasma ◽  
Water Contact ◽  
Polymeric Biomaterials ◽  
Performance Surface

Biomaterial-based blood clot formation is one of the biggest drawbacks of blood-contacting devices. To avoid blood clot formation, their surface must be tailored to increase hemocompatibility. Most synthetic polymeric biomaterials are inert and lack bonding sites for chemical agents to bond or tailor to the surface. In this study, polyethylene terephthalate was subjected to direct current air plasma treatment to enhance its surface energy and to bring oxidative functional binding sites. Marine-sourced anticoagulant sulphated polysaccharide fucoidan from Fucus vesiculosus was then immobilized onto the treated polyethylene terephthalate (PET) surface at different pH values to optimize chemical bonding behavior and therefore anticoagulant performance. Surface properties of samples were monitored using the water contact angle; chemical analyses were performed by FTIR and X-ray photoelectron spectroscopy (XPS) and their anticoagulant activity was tested by means of prothrombin time, activated partial thromboplastin time and thrombin time. On each of the fucoidan-immobilized surfaces, anticoagulation activity was performed by extending the thrombin time threshold and their pH 5 counterpart performed the best result compared to others.

scholarly journals Surface modification of polyethylene terephthalate films by direct fluorination

AIP Advances ◽  
2018 ◽  
Vol 8 (12) ◽  
pp. 125333 ◽  
Author(s):  
Yaqiang Liu ◽  
Qingqing Chen ◽  
Xuelian Du ◽  
Liqiang Li ◽  
Peng Li
Keyword(s):  
Surface Modification ◽  
Polyethylene Terephthalate ◽  
Direct Fluorination
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