scholarly journals Stable super-hydrophobic and comfort PDMS-coated polyester fabric

e-Polymers ◽  
2021 ◽  
Vol 21 (1) ◽  
pp. 654-661
Author(s):  
Liyun Xu ◽  
Kaifang Xie ◽  
Yuegang Liu ◽  
Chengjiao Zhang
Keyword(s):  
Water Repellency ◽  
High Water ◽  
Polyester Fabric ◽  
Small Scale ◽  
Water Contact ◽  
Pdms Film ◽  
Practical Applications ◽  
Pet Fabric ◽  
Cost Efficient ◽  
Poly Ethylene

Abstract Super-hydrophobic fabrics have shown great potential during the last decade owing to their novel functions and enormous potential for diver’s applications. Surface textures and low surface energy coatings are the keys to high water repellency. However, the toxicity of nanomaterials, long perfluorinated side-chain polymers, and the fragile of micro/nano-texture lead to the super-hydrophobic surfaces are confined to small-scale uses. Thus, in this article, a stable polydimethylsiloxane (PDMS)-coated super-hydrophobic poly(ethylene terephthalate) (PET) fabric (PDMS-g-PET) is manufactured via dip-plasma crosslinking without changing the wearing comfort. Benefiting from the special wrinkled structure of PDMS film, the coating is durable enough against physical abrasion and repeated washing damage, which is suffered from 100 cycles of washing or 500 abrasion cycles, and the water contact angle is still above 150°. This study promotes the way for the development of environmentally friendly, safe, and cost-efficient for designing durable superhydrophobic coatings for various practical applications.

High Hydrophilic Poly(Ethylene Terephthalate)(PET) Fabric Modified by Ionic Agent

2013 ◽  
Vol 319 ◽  
pp. 58-61
Author(s):  
Fang Xu ◽  
Guang Xian Zhang ◽  
Feng Xiu Zhang ◽  
Da Yang Wu
Keyword(s):  
Contact Angle ◽  
Water Content ◽  
Ethylene Terephthalate ◽  
Capillary Rise ◽  
Polyester Fabric ◽  
Water Contact ◽  
Pet Fabric ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Rise Height

As the surface of polyester fabric is hydrophobic, it is not comfortable to wear. In this paper, the surface of polyester fabric was ionized by an ionic agent. The result showed that the ionized polyester fabric had wonderful hydrophilicity. The water contact angle of ionized polyester fabric decreased to 0o, and the capillary rise height increased from 0.4cm to 14.4cm, water content from 23.77% to 119.78%. Water spraying rate decreased from 4 degree to 1 degree. The whiteness of ionized polyester fabric kept well.

A High-Efficiency Inflame Retardant Modification of Poly(Ethylene Terephthalate)(PET) Fabric

2014 ◽  
Vol 1004-1005 ◽  
pp. 315-318 ◽  
Author(s):  
Fang Xu ◽  
Feng Xiu Zhang ◽  
Gang Xian Zhang ◽  
Yuan Song Zhang
Keyword(s):  
High Efficiency ◽  
Oxygen Index ◽  
Elastic Recovery ◽  
Polyester Fabric ◽  
Flame Retardance ◽  
Limiting Oxygen Index ◽  
Pet Fabric ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Recovery Angle

In this paper, the flame retardant HAS was applied to imparting flame retardance to polyester fabric. The result showed that the flame retardance of polyester fabric improved a lot. The limiting oxygen index increased while the concentration of HAS solution and temperature increased. Whiteness and elastic recovery angle decreased while the concentration of HAS solution increased. Found a good match to the concentration and temperature, the limiting oxygen index could increase to 29% while whiteness and elastic recovery angle kept well.

scholarly journals 698 PB 306 WETTABILITY AND SURFACE TENSION OF FRUIT SURFACES

HortScience ◽  
1994 ◽  
Vol 29 (5) ◽  
pp. 533a-533 ◽  
Author(s):  
L. Cisneros-Zevallos ◽  
M. E. Saltveit ◽  
J. M Krochta
Keyword(s):  
Surface Tension ◽  
Water Repellency ◽  
High Water ◽  
Contact Angles ◽  
Stone Fruits ◽  
Water Contact ◽  
Wetting Behavior ◽  
Apple Cultivars ◽  
Chemical Groups ◽  
Apple Fruits

Nettability is an important factor to be considered in postharvest treatments such as washing, aqueous dippings, coatings, etc. Pome fruits (ten apple and four pear cultivars) and stone fruits (nectarine and plums) were evaluated for wetting behavior and surface tension at room temperature. Nettability was assessed by measuring contact angles of water. Surface tension was calculated by measuring contact angles of methylene iodide and water or by a series of pure surfactants using Zisman's method. Wetting behavior on apple fruits depended on cultivar, with water contact angles ranging from 75° to 131°. For pear fruits, wetting also depended on cultivar. Calculated surface tensions of pear fruits were in general higher than most apple cultivars tested. In stone fruits, plums presented a high water-repellency with a contact angle of 137°. The wetting of fruit surfaces seems to be governed by the nature of the chemical groups exposed on the surface of the cuticle and also by the surface roughness, as evidenced by tire high values of some contact angles.

Breathable, Antistatic and Superhydrophobic PET/Lyocell Fabric

2015 ◽  
Vol 10 (3) ◽  
pp. 155892501501000 ◽  
Author(s):  
Seong Ok Kwon ◽  
Chung Hee Park ◽  
Jooyoun Kim
Keyword(s):  
Transmission Rate ◽  
Water Repellency ◽  
Air Permeability ◽  
Water Contact ◽  
Moisture Regain ◽  
Pet Fabric ◽  
Multi Scale ◽  
Static Water ◽  
Finish Agent ◽  
Blend Fabric

The objective of this study was to develop a breathable and antistatic superhydrophobic PET/lyocell fabric by simple finishing with polymeric fluorocarbon siloxane. To find an optimum concentration of the finish agent, four different concentrations of fluorocarbon finish agent were applied on three different types of fabrics; lyocell 100%, PET 100%, and PET/lyocell blend (50%/50%). Static water contact angle (WCA), shedding angle, and water repellency tests were measured to evaluate the wettability and hydrophobicity of treated fabrics. A PET/lyocell blend fabric treated with 40 g/L fluorocarbon finish agent exhibited superhydrophobic characteristics with WCA of 153.6° and shedding angle of 9.5° resulting from its lowed surface energy and multi-scale roughness. The effects of fluorocarbon finish on fabric moisture regain, electrostatic property, water vapor transmission rate (WVTR), and air permeability were evaluated as parameters for clothing comfort. PET/lyocell blend fabric treated with fluorocarbon exhibited significantly lower static electricity and higher moisture regain than the treated PET fabric. WVTR and air permeability were maintained after the finish. The blended fabric achieved noteworthy combination of antistatic and superhydrophobic properties. The functionality of finished PET and PET/lyocell fabrics, measured by WCA, shedding angle, and water repellency rate, was maintained until 10 washing cycles.

Surface Modification of Poly(ethylene Terephthalate) (PET) with UV/Nano-TiO2

2012 ◽  
Vol 472-475 ◽  
pp. 2958-2961 ◽  
Author(s):  
Hui Liang ◽  
Gang Xian Zhang ◽  
Feng Xiu Zhang ◽  
Da Yang Wu
Keyword(s):  
Ultraviolet Radiation ◽  
Capillary Rise ◽  
Contact Angles ◽  
Nano Tio2 ◽  
Water Contact ◽  
Pet Fabric ◽  
Poly Ethylene Terephthalate ◽  
Poly Ethylene ◽  
Rise Height ◽  
Fabric Surface

The PET fabric surface was modified with ultraviolet radiation and nano-TiO2. The wettability and the broken strength of the modified PET fabric were studied. The results showed that with the increase of the ultraviolet radiation irradiation, the water contact angles of modified PET fabrics decreased greatly. Water contact angle of PET fabric modified with 40g/L nano-TIO2 and 60 min ultraviolet radiation irradiation could decreased to zero in 4.11 seconds. And the capillary rise height of modified PET fabric could increase from 1.1 mm to 110.2 mm. The spraying rate of modified fabric could decrease from 4 to 1 degree, and the water absorption could increase 89.86%. These showed the hydrophobic PET fabric could be modified to super hydrophilic PET fabric. The broken strength of modified PET fabric not only did not decrease, but also increased a little. The broken elongation kept well.

Surface Hydrophilicity Modification of Poly(Ethylene Terephthalate) Fabric by UV/TiO2

2013 ◽  
Vol 781-784 ◽  
pp. 2704-2707
Author(s):  
Ming Yu Li ◽  
Ting Ting Deng ◽  
Shu Xian Liu ◽  
Feng Xiu Zhang ◽  
Guang Xian Zhang
Keyword(s):  
Ethylene Terephthalate ◽  
Capillary Rise ◽  
Water Contact ◽  
Hydrophilic Modification ◽  
Pet Fabric ◽  
Poly Ethylene Terephthalate ◽  
Mechanical And Physical Properties ◽  
Poly Ethylene ◽  
Rise Height ◽  
Hydrophilicity Modification

The hydrophilic modification of poly (ethylene terephthalate)(PET) fabric is significant for industrial production. Its studied by ultraviolet radiation, nanoTiO2, H2O2 and NaOH. The results show the best condition is 3%nanoTiO2, 5%H2O2 and 3%NaOH, under 1000W UV radiation. With only about 30~35 minutes irradiation the PET fabric is nearly to wettable. For 40 minutes irradiation is super hydrophilic, the water contact angle of modified PET fabric can decrease to zero in 3 seconds. The wettability of modified PET fabric was examined. It shows the water absorption of modified PET fabric increase from 85% to 104%, and the capillary rise height can reach from 0.2 to 6.2 cm. Meanwhile the broken strength and elongation change of modified PET fabric tests show its mechanical and physical properties keep good.

Preparation and Property Study of PANI/PET Composite Conductive Fabric

2013 ◽  
Vol 821-822 ◽  
pp. 1232-1235
Author(s):  
Bao Hong Zhang ◽  
Tao Xue ◽  
Jia Guang Meng
Keyword(s):  
Low Temperature ◽  
In Situ Polymerization ◽  
Conductive Polymer ◽  
Polyester Fabric ◽  
Polymerization Process ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Pet Fabric ◽  
Conductive Fabric ◽  
Poly Ethylene

Polyester fabric is prone to static charging. Its decay rate is small and static phenomenon is serious. Therefore, the polyester products are usually modified. Polyaniline (PANI) is a conductive polymer and it has many advantages. Polyester (PET) fabric was treated with alkali and low temperature plasma. Polyaniline/Poly (ethylene terephthalate) composite conductive fabric was prepared though an in-situ polymerization process using aniline as monomer. The structural properties of PANI/PET composite conductive fabric were studied and characterized. After alkali deweighting and low temperature plasma, a film made of PANI on the surface of PANI/PET composite conductive fabric was formed easily.

scholarly journals The Effect of Hydroxyl on the Super-Hydrophobicity of Dodecyl Methacrylate (LMA) Coated Fabrics Through Simple Dipping-Plasma Crosslinked Method

2020 ◽  
Author(s):  
Liyun Xu ◽  
Yu Zhang ◽  
Ying Guo ◽  
Ruiyun Zhang ◽  
Jianjun Shi ◽  
...  
Keyword(s):  
Thermoplastic Polyurethane ◽  
Hydrophobic Effect ◽  
Water Repellency ◽  
Surface Hydrophobicity ◽  
Binding Property ◽  
Interesting Phenomenon ◽  
Water Contact ◽  
Capacitively Coupled ◽  
Pet Fabric ◽  
Dodecyl Methacrylate

In order to obtain stable super-hydrophobicity, suitable hydrophobic treatment agent should be selected according to different materials. In this paper, cotton and poly (-ethylene terephthalate) (PET) fabric was respectively coated by dodecyl methacrylate (LMA) via argon combined capacitively coupled plasma (CCP), and the surface hydrophobicity and durability of treated cotton and polyester fabrics were also discussed. An interesting phenomenon was happened that LMA coated cotton fabric (Cotton-g-LMA) had better water repellency and mechanical durability than LMA coated PET fabric (PET-g-LMA), and LMA coated hydroxyl grafted PET fabrics (PET fabrics were successively coated with polyethylene glycol (PEG) and LMA, PET-g-PEG&LMA) had similar performance to those of cotton fabrics. The water contact angle (WCA) of Cotton-g-LMA, PET-g-LMA and PET-g-PEG&LMA was 156 °, 153 ° and 155 °, respectively, and after 45 washing cycles or 1000 rubbing cycles, the corresponding WCA was decreased to 145 °, 88 °, 134 °and 146 °, 127 °, 143 °, respectively. Also, thermoplastic polyurethane (TPU) and polyamides-6 (PA6) fabrics were all exhibited the same properties to PET fabric. Therefore, the grafting of hydroxyl can improve the hydrophobic effect of LMA coating and the binding property between LMA and fabrics effectively without changing the wearing comfort..

Investigations Into Superhydrophobicity of a Soot Surface Attributed to Nano-Asperities

2013 ◽  
Vol 1 (1) ◽  
Author(s):  
Rahul Ramachandran ◽  
Madhu Seetharaman ◽  
N. N. Sharma
Keyword(s):  
Superhydrophobic Surface ◽  
Low Cost ◽  
Water Repellency ◽  
Cost Effective ◽  
High Water ◽  
Work Of Adhesion ◽  
Water Contact ◽  
Glass Substrates ◽  
Micrometer Scale ◽  
Scale Roughness

Superhydrophobicity in nature is the result of multiscale (hierarchical) roughness which consists of nano-asperities superimposed on micrometer scale roughness. A low-cost superhydrophobic surface was prepared by depositing soot on Vaseline coated glass substrates. The surface was rapidly prepared without any sophisticated fabrication facilities. The surface exhibited a remarkably high water contact angle of 161 deg and a roll-off angle of 3 deg. Atomic force microscopy (AFM) of the surface was done which revealed a very rough surface. The roughness features with nano-asperities superimposed on micrometer scale roughness enhance the water repellency. The micrometer scale peaks on the surface support the water droplet in a Cassie–Baxter state with the nano-asperities sheltering a composite interface below the droplet. The work of adhesion for the surface was also low at 18 nJ. The study will enable easy preparation of a cost effective superhydrophobic surface.

scholarly journals The Effect of Hydroxyl on the Superhydrophobicity of Dodecyl Methacrylate (LMA) Coated Fabrics through Simple Dipping-Plasma Crosslinked Method

Coatings ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 1263
Author(s):  
Liyun Xu ◽  
Yu Zhang ◽  
Ying Guo ◽  
Ruiyun Zhang ◽  
Jianjun Shi ◽  
...  
Keyword(s):  
Thermoplastic Polyurethane ◽  
Hydrophobic Effect ◽  
Surface Hydrophobicity ◽  
Contact Angles ◽  
Binding Property ◽  
Interesting Phenomenon ◽  
Water Contact ◽  
Capacitively Coupled ◽  
Pet Fabric ◽  
Dodecyl Methacrylate

In order to obtain stable superhydrophobicity, suitable hydrophobic treatment agents should be selected according to different material properties. In this paper, cotton and poly(ethylene terephthalate) (PET) fabrics were respectively coated with dodecyl methacrylate (LMA) via argon combined capacitively coupled plasma (CCP), and the surface hydrophobicity and durability of the treated cotton and polyester fabrics are also discussed. An interesting phenomenon happened, whereby the LMA-coated cotton fabric (Cotton-g-LMA) had better water repelling and mechanical durability properties than LMA-coated PET fabric (PET-g-LMA), and LMA-coated hydroxyl-grafted PET fabrics (PET fabrics were successively coated with polyethylene glycol (PEG) and LMA, PET-g-PEG & LMA) had a similar performance to cotton fabrics. The water contact angles of Cotton-g-LMA, PET-g-LMA and PET-g-PEG & LMA were 156°, 153° and 155°, respectively, and after 45 washing cycles or 1000 rubbing cycles, the corresponding water contact angles decreased to 145°, 88°, 134° and 146°, 127° and 143°, respectively. Additionally, thermoplastic polyurethane (TPU) and polyamides-6 (PA6) fabrics all exhibited the same properties as the PET fabric. Therefore, the grafting of hydroxyl can improve the hydrophobic effect of LMA coating and the binding property between LMA and fabrics effectively, without changing the wearing comfort.

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