Interfacial characteristics of heterogeneous layers of linear polyvinylamine and branched polyethyleneimine or polyethyleneimine grafted with C12–C22 alkyl chains

Oulanti, Otman; Pefferkorn, E.; Champ, Simon; Auweter, Helmut

doi:10.1016/j.jcis.2005.08.054

Cited by 2 publications

(3 citation statements)

References 32 publications

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“… Maximum coverage, Γ (mg/m2), decreases with decreasing pH and increasing ionic strength Studies indicated that reconformation is important and controls the maximum PVAm coverage. , After initial attachment, PVAm flattens on surfaces, giving thin adsorbed layers. Therefore, the maximum coverage of PVAm is kinetically controlled, and the maximum coverage increases with PVAm concentration in the adsorbing solution. The presence of vinylformamide moieties in PVAm- co -NVF gives thicker adsorbed layers and higher coverages than does PVAm …”

Section: Interactions At Interfacesmentioning

confidence: 99%

“…Studies indicated that reconformation is important and controls the maximum PVAm coverage. , After initial attachment, PVAm flattens on surfaces, giving thin adsorbed layers. Therefore, the maximum coverage of PVAm is kinetically controlled, and the maximum coverage increases with PVAm concentration in the adsorbing solution.…”

Section: Interactions At Interfacesmentioning

confidence: 99%

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Polyvinylamine: A Tool for Engineering Interfaces

Pelton

2014

Langmuir

108

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With the highest content of primary amine functional groups of any polymer, polyvinylamine (PVAm) is a potent tool for the modification of macroscopic and nanoparticle surfaces. Based on the free radical polymerization and subsequent hydrolysis of N-vinylformamide, PVAm is prepared as linear polymers (0.8 kDa to >1 MDa), microgels, macrogels, and copolymers. The amine groups serve as reaction sites for grafting PVAm to surfaces and for the preparation of derivatives. Coupling low-molecular-weight molecules and oligomers gives PVAm-X, where X includes hydrophobes, carbohydrate oligomers, proteins, TEMPO (2,2,6,6-tetramethyl-1-piperidinyloxy), phenylboronic acids, and fluorocarbons. This contribution highlights the use of PVAm and PVAm-X to modify solid surface properties. Where possible, the PVAm properties and applications as an interfacial agent are compared to those of linear polyethylenimine, polyallylamine, and chitosan.

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Section: Interactions At Interfacesmentioning

confidence: 99%

Section: Interactions At Interfacesmentioning

confidence: 99%

Polyvinylamine: A Tool for Engineering Interfaces

Pelton

2014

Langmuir

108

View full text Add to dashboard Cite

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“…On the other hand, hyperbranched polymers are obtained via a one‐pot synthetic methodology, which gives rise to structurally less perfect counterparts with comparable properties 1–5. Thus, there have been reports on the industrial production of hyperbranched poly(ethylene imine)s by BASF via the multibranching ring‐opening polymerization of aziridine6–9 and polyesters by Perstorp via the classical A 2 + B 3 polycondensation 10–13. However, such methods are only applicable to a very limited number of specialty monomers.…”

Section: Introductionmentioning

confidence: 99%

Self‐condensing atom transfer radical polymerization of inimers of different reactivity ratios with styrene and the thermal properties of poly(2,6‐dimethyl‐1, 4‐phenylene oxide)/branched polystyrene blends

Zhai¹,

Li²,

Fang³

et al. 2011

J of Applied Polymer Sci

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Although the self-condensing atom transfer radical polymerization (SCATRP) of inimers with typical comonomers has been extensively performed, there have been few reports to correlate the reactivity ratio with the growth of the molecular weights (MWs) and the development of branched structures. Thus, the SCATRP of inimers of different reactivity ratios, namely, 4-chloromethylstyrene (CMS) and maleimide (MI) inimers, with a large excess of styrene (St) were carried out, respectively, to examine the effect. The conversion and MW were monitored by gas chromatography, gel permeation chromatography, and multiangle laser light scattering. The results suggested that CMS merely functioned as an initiator for St at the early stage; this led to linear macroinimers, which underwent SCATRP and gave rise to randomly branched polystyrene (PS) only at high conversion. The MI inimers formed charge-transfer complexes with St and underwent the SCATRP to result in hyperbranched copolymers at first; this initiated the atom transfer radical polymerization of St and led to star-shaped PS. With the objective of improving the processability and melt fluidity, the physical properties of poly(2,6-dimethyl-1,4-phenylene oxide) (PPO) blends with linear, randomly branched, and starshaped PS were compared. In comparison with those with linear PS, the PPO/branched PS blends exhibited a higher glass-transition temperature, a higher melt flow index, and a comparable thermal stability because of the spherical architecture of the branched PS.

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Interfacial characteristics of heterogeneous layers of linear polyvinylamine and branched polyethyleneimine or polyethyleneimine grafted with C12–C22 alkyl chains

Cited by 2 publications

References 32 publications

Polyvinylamine: A Tool for Engineering Interfaces

Polyvinylamine: A Tool for Engineering Interfaces

Self‐condensing atom transfer radical polymerization of inimers of different reactivity ratios with styrene and the thermal properties of poly(2,6‐dimethyl‐1, 4‐phenylene oxide)/branched polystyrene blends

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