Surface segregation of a branched polymer with hydrophilic poly[2-(2-ethoxy)ethoxyethyl vinyl ether] side chains

2017 ◽  
Vol 8 (3) ◽  
pp. 505-510 ◽  
Author(s):  
Shin Sugimoto ◽  
Yukari Oda ◽  
Toyoaki Hirata ◽  
Ruriko Matsuyama ◽  
Hisao Matsuno ◽  
...  
Keyword(s):  
Vinyl Ether ◽  
Surface Segregation ◽  
Side Chains ◽  
Branched Polymer ◽  
Preferential Segregation ◽  
Surface Construction

A branched polymer with hydrophilic side chains was designed and prepared for anti-biofouling surface construction through its preferential segregation.

scholarly journals Gas Permeability of Star-Shaped Diblock Copoly(vinyl ether)s with Oxyethylene Side Chains

2016 ◽  
Vol 73 (3) ◽  
pp. 333-336 ◽  
Author(s):  
Ryoki OKUNAGA ◽  
Tamotsu HASHIMOTO ◽  
Michio URUSHISAKI ◽  
Toshikazu SAKAGUCHI
Keyword(s):  
Vinyl Ether ◽  
Gas Permeability ◽  
Side Chains

PEG-based Multifunctional Polyethers with Highly Reactive Vinyl-Ether Side Chains for Click-Type Functionalization

2011 ◽  
Vol 44 (16) ◽  
pp. 6326-6334 ◽  
Author(s):  
Christine Mangold ◽  
Carsten Dingels ◽  
Boris Obermeier ◽  
Holger Frey ◽  
Frederik Wurm
Keyword(s):  
Vinyl Ether ◽  
Side Chains

Static light scattering and transmission microscopy study of dilute Nafion solutions

e-Polymers ◽  
2007 ◽  
Vol 7 (1) ◽  
Author(s):  
Liu Wen-Hong ◽  
Yu Ting-Yi ◽  
T. Leon Yu ◽  
Lin Hsiu-Li
Keyword(s):  
Light Scattering ◽  
Vinyl Ether ◽  
Microscopy Study ◽  
Static Light Scattering ◽  
Size Exclusion ◽  
Solubility Parameters ◽  
Dimethyl Formamide ◽  
Side Chains ◽  
Transmission Microscopy ◽  
Freeze Dried

AbstractNafion, an ionomer composed of perfluorocarbon backbone and vinyl ether side chains terminated with -SO3 - groups, has dual solubility parameters, i.e. δ1= 9.7 (cal/cm3)1/2 relating to perfluorocarbon backbones and δ2 = 17.3 (cal/cm3)1/2 relating to sulfonated vinyl ether side chains. It had been reported that Nafion molecules aggregated in dilute and semi-dilute water and alcohol solutions. In this study, we report static light scattering (SLS) measurements of dilute Nafion in N,N’- dimethyl formamide (DMF, solubility parameter δ =12.2 (cal/cm3)1/2, dielectric constant ε=36.7) and N,N’-dimethyl acetamide (DMAc, δ =10.8 (cal/cm3)1/2, ε=37.8) solutions with Nafion concentrations ranging from 0.2 mg/ml to 1.0 mg/ml. The DMF and DMAc solvents have δ closing to δ1 of Nafion perfluorocarbon backbones and ε much lower than water (ε =78). Thus DMF and DMAc are compatible with Nafion perfluorocarbon and few Nafion molecules aggregate in DMF and DMAc solvents when [Nafion]< 1.0 mg/ml. The lower ε of DMF and DMAc led to low polyelectrolyte effect of Nafion in these two solvents. The obtained Mws of present work were in good agreement with the Mw obtained from Nafion in dilute dimethyl sulfoxide (DMSO, δ =12.0 (cal/cm3)1/2, ε=46.6) solutions, reported by Lousenberg, using size exclusion chromatography incorporating static light scattering detection. The <RG> data obtained from SLS measurements were compared with the particles sizes of transmission electron microscope (TEM) observations of freeze dried Nafion thin films prepared on copper grids with 0.6 mg/ml Nafion solutions. Comparable results were obtained from these two observations.

Surface segregation of highly branched polymer additives in linear hosts

2008 ◽  
Vol 46 (17) ◽  
pp. 1788-1801 ◽  
Author(s):  
Zhenyu Qian ◽  
Venkatachala S. Minnikanti ◽  
Lynden A. Archer
Keyword(s):  
Surface Segregation ◽  
Polymer Additives ◽  
Branched Polymer

Dipole Layer Formation by Surface Segregation of Regioregular Poly(3-alkylthiophene) with Alternating Alkyl/Semifluoroalkyl Side Chains

2011 ◽  
Vol 23 (18) ◽  
pp. 4257-4263 ◽  
Author(s):  
Yanfang Geng ◽  
Qingshuo Wei ◽  
Kazuhito Hashimoto ◽  
Keisuke Tajima
Keyword(s):  
Surface Segregation ◽  
Side Chains ◽  
Layer Formation ◽  
Dipole Layer ◽  
Regioregular Poly

scholarly journals Surface Segregation of Amphiphilic PDMS-Based Films Containing Terpolymers with Siloxane, Fluorinated and Ethoxylated Side Chains

Coatings ◽  
2019 ◽  
Vol 9 (3) ◽  
pp. 153 ◽  
Author(s):  
Elisa Martinelli ◽  
Elisa Guazzelli ◽  
Antonella Glisenti ◽  
Giancarlo Galli
Keyword(s):  
Photoelectron Spectroscopy ◽  
Surface Segregation ◽  
Water Environment ◽  
Film Surface ◽  
Side Chain ◽  
Chemical Compositions ◽  
Side Chains ◽  
Air Interface ◽  
High Enrichment ◽  
Surface Active

(Meth)acrylic terpolymers carrying siloxane (Si), fluoroalkyl (F) and ethoxylated (EG) side chains were synthesized with comparable molar compositions and different lengths of the Si and EG side chains, while the length of the fluorinated side chain was kept constant. Such terpolymers were used as surface-active modifiers of polydimethylsiloxane (PDMS)-based films with a loading of 4 wt%. The surface chemical compositions of both the films and the pristine terpolymers were determined by angle-resolved X-ray photoelectron spectroscopy (AR-XPS) at different photoemission angles. The terpolymer was effectively segregated to the polymer−air interface of the films independent of the length of the constituent side chains. However, the specific details of the film surface modification depended upon the chemical structure of the terpolymer itself. The exceptionally high enrichment in F chains at the surface caused the accumulation of EG chains at the surface as well. The response of the films to the water environment was also proven to strictly depend on the type of terpolymer contained. While terpolymers with shorter EG chains appeared not to be affected by immersion in water for seven days, those containing longer EG chains underwent a massive surface reconstruction.

THE STRUCTURE OF THE "GUM ASAFOETIDA" POLYSACCHARIDE

1961 ◽  
Vol 39 (1) ◽  
pp. 192-202 ◽  
Author(s):  
J. K. N. Jones ◽  
G. H. S. Thomas
Keyword(s):  
Methyl Ether ◽  
Glucuronic Acid ◽  
Side Chains ◽  
Branched Polymer

The polysaccharide from gum asafoetida contains D-galactose, L-arabinose, L-rhamnose, 4-O-methyl-D-glucuronic acid, and D-glucuronic acid. It is a highly branched polymer which contains a backbone of D-galactopyranose residues which are very probably mainly 1,3-β-linked.The side chains consist of residues of L-arabinofuranose, D-galactopyranose, D-glucuronic acid, and its 4-O-methyl ether.

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