Improving Hydrophobicity Of Polyurethane By PTFE Incorporation

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Development and study of waterproof breathable fabric using

by AS Bakshi Cited by 2 fabric using silicone oil and polyurethane binder in percentage of silicone in the material, there is an increase in breathability as The incorporation of hydrophobic agents along with hydrophilic PTFE membranes are.

Hydrophobicity, Hydrophilicity and Silane Surface Modification

Gelest Inc. no obvious functionality such as polyethylene and poly- styrene. Silane both polypropylene and polytetrafluoroethylene are more hydrophobic. Similarly vide better hydrophobic surface treatments than linear alkyl silanes.


which can be easily incorporated into polymers having wide range of Polyurethane is a versatile class of polymer and is petridishes and placed on Teflon sheet for heat treat- ment. decrease in hydrophobicity leading to improved.

Biomaterials in the development and future of - CORE

by L Xue 2003 Cited by 531 vascular grafts in clinical practice are Dacron and ePTFE. Both PET and PTFE molecules are highly crystalline and hydrophobic, the 2 properties that prevent the 

Hemocompatibility of Degradable Polar Hydrophobic Ionic

by KS Brockman A novel biomaterial, degradable polar hydrophobic ionic polyurethane improve this thesis project and ensure the work was viewed from multiple perspectives. Thank-you to the many people at Interface Biologics Inc. for your help throughout my thesis. While materials such as Dacron and polytetrafluoroethylene (PTFE).

Influence of a hydrophobic monomer on the physical - SciELO

by MCC GIORGI 2018 Cited by 2 of DDDMA monomers and urethane dimethacrylate (UDMA). The Adding DDDMA to the composition of surface sealants can improve (Bisco Inc., Schaumburg, IL, USA), and a composite A Teflon metal matrix was filled with the resin and 

Natural and Synthetic Polymers for Designing Composite

initially incorporated into the surrounding tissue, which are time-dependently dental composites, and intraocular lenses; and later PET, PU, and PTFE for nanoparticles significantly improved the hydrophilicity and protein adsorption.

Synthesis and properties of aqueous polyurethane dispersions

by F Mumtaz 2013 Cited by 31 based counterparts for various applications due to increasing health and environmental facilitate water dispersibility by incorporation of hydrophilic groups,.Missing: PTFE ‎ Must include: PTFE

Palm kernel oil-based polyester polyurethane composites

by NN bt Zulkifli 2016 Cited by 3 Background: In this study, polyurethane (PU) films from palm kernel oil-based polyester (PKO-p) incorporated Conclusions: In summary, incorporation of MWNTs improved the mechanical properties of the perature and then casted onto a Teflon plate and dried in improved the hydrophobicity and led to a positive bio-.

A Review on Superhydrophobic Polymer Nanocoatings

12 Feb 2018 This hydrophobic behavior can be further improved through the application of Figure 6. Synthesis route of PU/F-SiO2 superhydrophobic coatings. Industrial incorporated SiO2 nanoparticles acted as superior insulators and mass transport basis of the lotus leaf structure, Teflon-coated mesh films with.

ABSTRACT PAUL, SHREYA. Surface Modification of

by S Paul 2009 Cited by 9 elastomeric polymers such as thermoplastic polyurethane (TPU) and Pebax. Increased adhesion UV irradiation also proved effective and has improved the hydrophilicity of PP. The laminated This property is obtained by incorporating hydrophilic group in the backbone of polytetrafluoroethylene (e-PTFE) 2. Figure 2.4: 

Biomedical Applications of Polyurethanes - National

by P Vermette 2001 Cited by 177 PTFE and polyurethanes have all been considered in the fabrication of rounding the polymer surface is hydrophobic such as polyurethane-air, the improved biostability incorporating a high level of siloxane segments into both hard and the.

Microstructure and Properties of Polytetrafluoroethylene

by F Zhang 2020 Cited by 1 In order to improve the performance of PTFE, the modified Kevlar poly-p-phenylene terephthamide (PPTA) is a synthetic fiber with The incorporation of the oxyfluorinated and commercial textile wastewater containing surfactants using hydrophobic and hydrophilic-coated polytetrafluoroethylene.


16 Aug 2016 Incorporation of phenyl-methyl silicone oils led to improved Initial development of SiPU coatings with hydrophilic surfaces attachment, outperforming poly(tetrafluoroethylene) (PTFE), nanostructured superhydrophobic, 

Etching Processes of Polytetrafluoroethylene Surfaces

by J Hubert 2016 Cited by 27 necessity of oxygen to improve the hydrophobicity of PTFE, and we suggested a in WCA with an incorporation of oxygen.19,20 As far as we know, the F. Contact angle hysteresis in oxygen plasma treated poly(tetrafluoroethylene).

c19) United States c12) Patent Application Publication - Wisconsin

The modified hydrophobic sub- strates and improve cell affinity and antithrombogenicity of hydropho- bic surfaces. hereby incorporated by reference in its entirety. STATEMENT OF ethylene (PTFE), poly (lactic acid) (PLA), poly (lactic-co-.

Oil Adsorption Performance and Efficiency Study - UWSpace

by T Sung 2017 Cited by 2 In this thesis study, a super-oleophilic and hydrophobic polyurethane sponge (PU) was More importantly, efficiency studies suggest potential further improvement of Figure A.2 Polyurethane sponge specifications by the manufacturer Foam Factory, Inc. 127 application to surface thermodynamics of teflon and graphite.


by RL Koch interpenetrating polymer network (IPN) materials of poly(dimethyl siloxane) (PDMS) and These elastomeric materials had improved hydrophilicity LSIR kit used for the majority of this work was the P-125 kit (Silicones, Inc; North Carolina,. USA). POLYTETRAFLUOROETHYLENE FOR SMALL DIAMETER VASCULAR.

Fabrication and Properties of Superhydrophobic Waterborne

by F Wang Cited by 4 to improve its properties such as hydrophobicity and wear resistance D. Improving hydrophobicity of polyurethane by PTFE incorporation.

Enhancing anti-thrombogenicity of biodegradable

7 Aug 2018 polyurethanes decreased with increasing hydrophobic DPA amounts. All PU-DPA Covalently incorporating DPA into the polyurethane significantly was poured into a covered Teflon® dish and then placed in an oven at 70 

Durable nanostructured superhydrophobic coatings on

by J Xiong 2016 Cited by 1 [email protected] core-shell structure not only increases the hydrophobic properties TiO2 nanoparticles In addition, to improve the adhesion strength of superhydrophobic 3.2.2 Fabrication of superhydrophobic films incorporating TiO2 nanoparticles 9 Contact angle and sliding angle on PTFE/PVDF composite surfaces as.

A survey of icephobic coatings and their potential use in a

by X Huang 2019 Cited by 53 It was qualitatively determined that hydrophobic coatings can be more effective material, PTFE films, and fluorinated silicone rubber/polyurethane coatings Poly dimethylsiloxane (PDMS) coatings with the incorporation of nano silica Increase in coating-ice adhesion with each icing/de-icing cycle (the.

Biomaterials and the Foreign Body Reaction: - OhioLINK ETD

by JA Jones 2007 Cited by 9 Disparate Effects of Hydrophobic and Hydrophilic Surfaces on. Macrophage hydrophobic materials such PTFE with a contact angles of 105o-116o inhibit cellular adhesion. polyurethane surfaces intended to increase plasminogen adsorption, increase in macrophage fusion seen in Chapter V with the incorporation of.

Polymer coatings for biomedical applications - Portsmouth

by JR Smith Cited by 72 PSMA poly(styrene)-co-poly(acrylic acid). PTFE poly(tetrafluoroethylene) layers on ZE41 Mg alloy with an epoxy-silane coating markedly improved the corrosion With this in mind, Strobel et al. incorporated three drugs (gentamicin for burst release, reviews the many uses of hydrophilic polymer coatings for medicinal 

Bio-based polyurethane nanocomposite thin coatings - Nature

by L Li 2021 cage, respectively, were successfully incorporated into thin castor oil‑based Its surface hydrophobicity was significantly improved in comparison with that without the formed coating liquid was poured into a polytetrafluoroethylene mold (20 

Recent advances in fabricating durable superhydrophobic

27 Nov 2020 hydrophilic, hydrophobic, and superhydrophobic, and they are determined by the composites. Using strong adhesive materials to improve the adhe- by H3BO3 incorporation with [email protected] The coated produced polypropylene (PP)/poly(tetrafluoroethylene) (PTFE) com- posite foams 

Preparation of new superhydrophobic and highly oleophobic

by E Yousefi 2018 Cited by 32 and (iv) improving the chemical bonding and electrostatic interactions However, the relative hydrophobic nature of PU resin [33, C. Koti Reddy, D. Shailaja, Improving hydrophobicity of polyurethane by PTFE incorporation, J. Appl. Polym.


POLYURETHANES BASED ON FATTY ACIDS WITH IMPROVED monomers obtained from natural sources were incorporated in the polymer backbone to obtain the desired A 250 mL, two-necked, round-bottom flask equipped with a Teflon-coated These results are in agreement with the hydrophobic character of all.

Polyurethane Nanocomposites as Potential Drug - UNSWorks

by JHY Chung 2011 resulting OMS were incorporated at various loadings into PU matrices and solvent conferred an increase in strain while maintaining the Young's modulus and tensile effect of drug size and hydrophobicity on the drug release behaviour of growth (S.aureus) by five orders of magnitude as compared to neat PTFE [224].

Polytetrafluoroethylene bindered hematite (α Fe2O3

by H Madusanka 2018 Cited by 2 Keywords: α Fe2O3, PTFE, NH3 gas sensor, room temperature D 2015 Improving hydrophobicity of polyurethane by PTFE incorporation J.

Nanotopography and Plasma Treatment: Redesigning the

by DST Chong 2015 Cited by 32 surface to enhance the self-endothelialisation potential of a nanocomposite silsesquioxane (POSS) incorporated within it. mary patency rate for pre-seeded PTFE grafts was 78% with the polyurethane-based polymer include its antith- surfaces optimising surface hydrophilicity thus providing a.


by C Zhang 2006 Cited by 4 incorporating bioactive molecules during the light-curing process. (PLG); non-degradable polymers such as polytetrafluoroethylene (PTFE), nylon and microphase separation in MP530M, one can expect improved hydrophilicity and,.

Untra-thin films of polyvinyl alcohol on hydrophobic surfaces

by M Kozlov 2004 Cited by 1 63. 11.2.3. Cross-linking of adsorbed PVOH by incorporation of an I-4, Weight gain upon adsorption of PVOH on expanded PTFE sheet. 44. II- 1. reported that other water-soluble polymers, as diverse as poly(acrylic acid) (PAA), these factors enhance hydrophobic interactions and promote adsorption.

Flame Retardancy of Bio-Based Polyurethanes - HAL Univ

by H Vahabi 2020 Cited by 13 various solutions for improving the flame retardancy of PUs, their incorporation into PU foam formulations can be done at low Hydrophobic coating, However, the same quantity of fly ash, ceramic, or Teflon as filler 

Improving hydrophobicity of polyurethane by PTFE incorporation

by C Koti Reddy 2015 Cited by 14 improve hydrophobicity of PU by incorporating low levels of fluorine at a molecular level. Nanocomposites were made by preparing. PU in the presence of PTFE 

High-Performance Coating Materials - Brookhaven National

by T Sugama 2006 Cited by 3 important role in improving the adherence of carbon steel to the coating and in poly(tetrafluoroethylene)/(hexafluoropropylene) (PTFHFP) polymer coating for < 70° of a precursor solution droplet on both metal surfaces; 3) a hydrophobic surface to the Teflon-rich PPS coatings' surfaces as a function of exposure time in 

Nonthermal Plasma Treatment Improves Uniformity - MDPI

by GD Learn 2020 Hydrophobic Polymer Substrates polyurethane coatings upon unreceptive polypropylene substrates. plasma-based surface activation for improving coating uniformity, X-ray photoelectron spectrometer (Physical Electronics, Inc., placed in a Parafilm-covered Teflon dish and allowed to cure for 2 

Synthesis and characterization of waterborne polyurethane

by A Santamaría Echart 2017 being incorporated to polyurethane-urea dispersions in order to confer antimicrobial Furthermore, the possibility of dispersing hydrophilic reinforcements has focused However, polyethers are preferable for improving water dispersion and cm) Teflon molds and allowing them to dry in a climatic chamber at 25 °C and.

Polyurethane films, foams and nanocomposites prepared from

by C Zhang 2014 Cited by 5 In order to increase the hydroxyl numbers of vegetable oil-based polyols, Finally, carbon nanotubes were incorporated into the PU matrix to improve the Due to the hydrophobic nature of Then, the mixture was poured into a Teflon.

Self-replenishing photo-cured hydrophobic dual - Pure

14 Nov 2016 UV-cured Self-replenishing Hydrophobic Polymer Films curing efficiency, and a photo-cured IPN approach to improve the mechanical properties by generating PU self-healing coatings utilize polymer memory to repair scratches, incorporated into the PEGDA network by free radical polymerization.

Master's Thesis: - Chalmers Publication Library

by E BENGTSSON Cited by 5 The aim of this master thesis was to create a super hydrophobic coating on a biobased of increasing the bonding strength between the coating and the surface, energy of a substrate due to an incorporation of oxygen-containing groups to the Teflon baking sheet under a pressure of ∼2.18 kPa corresponding to the 

Wetting phenomena in membrane distillation - [email protected]

by M Rezaei 2018 Cited by 232 improve the energy efficiency of MD (Chung et al., 2016; Summers and and the pores below the initially wetted surface by incorporating a floor below each Interestingly, all the hydrophobic membranes used in MD, such as PP, PTFE, and with Hydrophilic Polyurethane Coated Polytetrafluoroethylene Membranes.

Using nonthermal plasma treatment to improve - bioRxiv

by GD Learna Cited by 1 durability of hydrophilic coatings on hydrophobic polymer surfaces polytetrafluoroethylene, and polydimethylsiloxane. as a means to improve quality of coatings, specifically cyclodextrin-based polyurethanes suggested that most engrafted oxygen was incorporated as hydroxyl groups, with lesser 

Review Article Nanocomposite Coatings -

by P Nguyen-Tri Cited by 77 Incorporation of nanofillers into the organic coatings might enhance their barrier performance, by decreasing the epoxy [2 7], polyurethane [8, 9], Chitosan [10, 11], polyethy- most used nanoparticles were PTFE [80 82], PEO [83], PANi The hydrophobicity is usually improved by increasing the.

Nano Coatings in Construction - MZV

nanotechnology can improve or dis- rupt the existing Nanoparticles. Protective coatings incorporating nanoparticles have surface both hydrophobic and oleophobic at the same time, which modified polyurethanes whose weathering resistance is increased by polymers) are Teflon like nanoparticles that are applied.

Thermo-Oxidative Behavior of PTMG and PPG Based

by RS Tocchetto 2002 Cited by 2 degradation process and it results in better thermo-oxidative resistance as well as better mechanical 21. 1.4.2. Illustration of a Zisman plot for a very hydrophobic solid PTFE. Poly(tetrafluoro ethylene). PTMG. Polytetramethylene glycol monomer, the fluorination of polyurethanes may be done by the incorporation of.

Effect of Microwave Plasma Surface Treatment for Improved

by A Takeuchi Cited by 1 hydrophobic and low adhesion surface property with other materials due to low surface free energy. order to improve adhesion strength of PTFE, a variety of surface modification and incorporation of the nitrogen functional groups. [21] F. R. Pu, R. L. Williams, T.K. Markkula, J. A. Hunt, Biomaterials, 23 (2002) 2411.


by F Capitanio 2012 Il a été pensé que la performance de la cathode N 10 / T 05 aurait pu être Another approach for a better water removal concerns the incorporation of the PTFE improving the water removal from the cathode by increasing the hydrophobic 

Amelioration of anticorrosion and hydrophobic properties of

11 Jan 2016 The incorporation of nano ZnO par- ticles within the of the epoxy resin and the poly dimethyl siloxane (PDMS) mod- ifier (90:10 w/w) Teflon petri dish. The steel The improvement in hydrophobicity of the coating can be.

Structure-Property Relationships Flexible Polyurethane Foams

by BD Kaushiva 1999 Cited by 38 poly(tetrafluoroethylene) (PTFE) and the terpolymer polymers have better resistance to hydrolysis, due to their hydrophobicity. molded foams become incorporated within the hard segments which would alter their