Tuning the Surface Properties of Elastomers Using Hydrocarbon-Based Mechanically Assembled Monolayers

2001 ◽  
Vol 710 ◽  
Author(s):  
Kirill Efimenko ◽  
Jan Genzer
Keyword(s):  
Contact Angle ◽  
Fine Structure ◽  
Surface Structure ◽  
Surface Properties ◽  
Molecular Orientation ◽  
Angle Measurements ◽  
Static Contact ◽  
Contact Angle Measurements ◽  
Assembled Monolayers ◽  
Excellent Stability

ABSTRACTWe use static contact angle measurements and near-edge absorption fine structure to elucidate the surface structure and molecular orientation of hydrocarbon-based mechanically assembled monolayers (H-MAMs), structures formed by combination of assembly of alkyl moieties onto flexible elastomeric substrates and mechanical manipulation of the substrates. Specifically, we report that the organization of the grafted molecular array (“liquid”-like vs. solid-like) can be tailored by varying the degree of stretching of the elastomeric substrate. We also show that the H-MAM surfaces exhibit excellent stability.

scholarly journals Precise Static Contact Angle Measurements Using Pythagolas Rule

2014 ◽  
Vol 15 (2) ◽  
pp. 57-62
Author(s):  
Jin-Yeong Choi ◽  
Dong-Jun Kwon ◽  
Zuo-Jia Wang ◽  
Pyeong-Su Shin ◽  
Joung-Man Park
Keyword(s):  
Contact Angle ◽  
Static Contact Angle ◽  
Angle Measurements ◽  
Static Contact ◽  
Contact Angle Measurements

Vertically aligned CNT arrays: structural integrity and surface properties

2016 ◽  
Vol 7 (6) ◽  
pp. 703-711 ◽  
Author(s):  
Dimitris K. Perivoliotis ◽  
Malamatenia A. Koklioti ◽  
Elias P. Koumoulos ◽  
Yiannis S. Raptis ◽  
Costas A. Charitidis
Keyword(s):  
Contact Angle ◽  
Structural Integrity ◽  
Mechanical Performance ◽  
Content Type ◽  
Cvd Method ◽  
Angle Measurements ◽  
Hydrophobic Behavior ◽  
Static Contact ◽  
Contact Angle Measurements ◽  
Cnt Arrays

Purpose Carbon nanotube-based architectures have increased the scientific interest owning to their exceptional performance rendering them promising candidates for advanced industrial applications in the nanotechnology field. Despite individual CNTs being considered as one of the most known strong materials, much less is known about other CNT forms, such as CNT arrays, in terms of their mechanical performance. The paper aims to discuss these issues. Design/methodology/approach In this work, thermal CVD method is employed to produce VA-MWCNT carpets. Their structural properties were studied by means of SEM, XRD and Raman spectroscopy, while their hydrophobic behavior was investigated via contact angle measurements. The resistance to indentation deformation of VA-MWCNT carpets was investigated through nanoindentation technique. Findings The synthesized VA-MWCNTs carpets consisted of well-aligned MWCNTs. Static contact angle measurements were performed with water and glycerol, revealing a rather super-hydrophobic behavior. Originality/value The structural analysis, hydrophobic behavior and indentation response of VA-MWCNTs carpets synthesized via CVD method are clearly demonstrated.

Estimation of the Surface Properties of Styrene-Acrylonitrile Random Copolymers from Contact Angle Measurements

1999 ◽  
Vol 217 (1) ◽  
pp. 94-106 ◽  
Author(s):  
Maria Helena Ventura Cabral Adão ◽  
Benilde Jesus Vieira Saramago ◽  
Anabela Catarino Fernandes
Keyword(s):  
Contact Angle ◽  
Surface Properties ◽  
Random Copolymers ◽  
Angle Measurements ◽  
Contact Angle Measurements ◽  
Styrene Acrylonitrile

scholarly journals Specific ion modulated thermoresponse of poly(N-isopropylacrylamide) brushes

2016 ◽  
Vol 18 (8) ◽  
pp. 6037-6046 ◽  
Author(s):  
Ben A. Humphreys ◽  
Joshua D. Willott ◽  
Timothy J. Murdoch ◽  
Grant B. Webber ◽  
Erica J. Wanless
Keyword(s):  
Contact Angle ◽  
Static Contact Angle ◽  
Angle Measurements ◽  
Static Contact ◽  
Contact Angle Measurements

Specific anion identity and concentration dictates the direction and magnitude of the shift in LCST for a pNIPAM brush determined by in situ ellipsometry, QCM-D and static contact angle measurements.

scholarly journals A Facile Activation Method for Improving the Wettability of Polyurethane Surfaces

2019 ◽  
Vol 56 (2) ◽  
pp. 416-420
Author(s):  
Luiza Madalina Gradinaru ◽  
Stelian Vlad ◽  
Mioara Drobota ◽  
Maria Spiridon ◽  
Ioan Istrate
Keyword(s):  
Contact Angle ◽  
Polymer Surface ◽  
Bulk Properties ◽  
Polar Interaction ◽  
Polar Groups ◽  
Angle Measurements ◽  
Static Contact ◽  
Contact Angle Measurements ◽  
Polyurethane Film ◽  
Time Periods

This work reports the activation of polyurethane film surfaces in order to enrich them with polar groups such as -NH2, -OH, -COOH or radicals, which further allows immobilization of several bioactive compounds. UV-activation was used to introduce new groups on the polymer surface without affecting the bulk properties. The current arising species improve the wettability of the PU surfaces as it was observed from the static contact angle measurements. The structure and composition of the new PU surfaces were analyzed by using ATR-FTIR spectroscopy. The results suggested the possibility of modifying the PU surfaces in a shorter time periods, in order to provide many sites to attach other biomacromolecules by polar interaction or hydrogen bonding.

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