Comb polymers: Are they the answer to monolayer stability?

2011 ◽  
Vol 384 (1-3) ◽  
pp. 482-489 ◽  
Author(s):  
Emma L. Prime ◽  
David J. Henry ◽  
Irene Yarovsky ◽  
Greg G. Qiao ◽  
David H. Solomon
Keyword(s):  
Comb Polymers ◽  
Monolayer Stability

Polystyrene comb polymers built on cellulose or poly(styrene-co-2-hydroxyethylmethacrylate) backbones as substrates for the preparation of structured honeycomb films

2005 ◽  
Vol 41 (10) ◽  
pp. 2264-2277 ◽  
Author(s):  
Maribel Hernández-Guerrero ◽  
Thomas P. Davis ◽  
Christopher Barner-Kowollik ◽  
Martina H. Stenzel
Keyword(s):  
Comb Polymers

Temperature dependence of dipalmitoyl phosphatidylcholine monolayer stability

1981 ◽  
Vol 51 (5) ◽  
pp. 1108-1114 ◽  
Author(s):  
J. Goerke ◽  
J. Gonzales
Keyword(s):  
Phase Transition ◽  
Lung Surfactant ◽  
Principal Component ◽  
Water Interface ◽  
Dipalmitoyl Phosphatidylcholine ◽  
Phase Transition Temperatures ◽  
Air Water Interface ◽  
Different Temperatures ◽  
Monolayer Stability ◽  
Isolated Rat

Dipalmitoyl phosphatidylcholine is the principal component of lung surfactant, and knowledge of its behavior as a film spread at the air-water interface is essential for understanding how lung surfactant itself works. We therefore studied the collapse rates of very low surface tension air-water monolayers of dipalmitoyl, dimyristoyl, and palmitoyl-myristoyl phosphatidylcholines at different temperatures. In each case we found that the monolayers abruptly became unstable at temperature 3–4 degree C above their bulk lipid-water phase transition temperatures (Tc). This accords with a comparable increase in Tc occurring in bulk systems subjected to high pressure. These findings are also consistent with the behavior of isolated rat lungs, which have been found to require higher transmural pressures to maintain a given volume on deflation when kept at temperature above the Tc of dipalmitoyl phosphatidylcholine.

Linear rheology of comb polymers with star-like backbones: melts and solutions

2006 ◽  
Vol 46 (2) ◽  
pp. 273-286 ◽  
Author(s):  
Michael Kapnistos ◽  
George Koutalas ◽  
Nikos Hadjichristidis ◽  
Jacques Roovers ◽  
David J. Lohse ◽  
...  
Keyword(s):  
Comb Polymers

Damping Behavior of Entangled Comb Polymers: Experiment

2009 ◽  
Vol 42 (4) ◽  
pp. 1392-1399 ◽  
Author(s):  
Jung Hun Lee ◽  
Paraskevi Driva ◽  
Nikos Hadjichristidis ◽  
Pamela J. Wright ◽  
Steven P. Rucker ◽  
...  
Keyword(s):  
Comb Polymers ◽  
Damping Behavior

Investigating phosphonate monolayer stability on ALD oxide surfaces

2014 ◽  
Vol 288 ◽  
pp. 98-108 ◽  
Author(s):  
Brittany Branch ◽  
Manish Dubey ◽  
Aaron S. Anderson ◽  
Kateryna Artyushkova ◽  
J. Kevin Baldwin ◽  
...  
Keyword(s):  
Oxide Surfaces ◽  
Monolayer Stability

Synthesis and properties of comb polymers with semirigid mesogen-jacketed polymers as side chains

2011 ◽  
Vol 50 (5) ◽  
pp. 918-926 ◽  
Author(s):  
Ziyue Ma ◽  
Cui Zheng ◽  
Zhihao Shen ◽  
Dehai Liang ◽  
Xinghe Fan
Keyword(s):  
Side Chains ◽  
Comb Polymers

scholarly journals Amphiphilic Comb Polymers as New Additives in Bicontinuous Microemulsions

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2410
Author(s):  
Debasish Saha ◽  
Karthik R. Peddireddy ◽  
Jürgen Allgaier ◽  
Wei Zhang ◽  
Simona Maccarrone ◽  
...  
Keyword(s):  
Neutron Scattering ◽  
Small Angle ◽  
Small Angle Neutron Scattering ◽  
Amphiphilic Polymers ◽  
Side Chain ◽  
Side Chains ◽  
Contrast Variation ◽  
Dna Complexes ◽  
Comb Polymers ◽  
Polymer Architectures

It has been shown that the thermodynamics of bicontinuous microemulsions can be tailored via the addition of various different amphiphilic polymers. In this manuscript, we now focus on comb-type polymers consisting of hydrophobic backbones and hydrophilic side chains. The distinct philicity of the backbone and side chains leads to a well-defined segregation into the oil and water domains respectively, as confirmed by contrast variation small-angle neutron scattering experiments. This polymer–microemulsion structure leads to well-described conformational entropies of the polymer fragments (backbone and side chains) that exert pressure on the membrane, which influences the thermodynamics of the overall microemulsion. In the context of the different polymer architectures that have been studied by our group with regards to their phase diagrams and small-angle neutron scattering, the microemulsion thermodynamics of comb polymers can be described in terms of a superposition of the backbone and side chain fragments. The denser or longer the side chain, the stronger the grafting and the more visible the brush effect of the side chains becomes. Possible applications of the comb polymers as switchable additives are discussed. Finally, a balanced philicity of polymers also motivates transmembrane migration in biological systems of the polymers themselves or of polymer–DNA complexes.

Sign in / Sign up

Export Citation Format

Share Document