Grafting polyzwitterions onto polyamide by click chemistry and nucleophilic substitution on nitrogen: A novel approach to enhance membrane fouling resistance

Yu, Hai‐Yin; Kang, Yan; Liu, Yanfang; Mi, Baoxia

doi:10.1016/j.memsci.2013.08.022

Cited by 122 publications

(59 citation statements)

References 54 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Similar to the revolutionary changes brought to polyelectrolyte synthesis [106], polyzwitterions have equally profited from this development. RDRP techniques offer direct access to polymers bearing zwitterionic groups with previously unthinkable features, such as predefined molar masses and narrow molar mass distributions [163,[182][183][184][185][186][187][188][189] as well as well-defined functional end groups [61,166,182,[190][191][192][193][194][195][196][197][198][199][200][201][202][203][204][205][206][207][208]. Moreover, complex architectures, such as block copolymers [14,[46][47][48]166,167,169,173,187,, graft copolymers [164,213,237,[241][242]…”

Section: Synthesis By Chain Growth Polymerizationsmentioning

confidence: 99%

“…RDRP methods enable also the anchoring of polyzwitterions to surfaces by "grafting-through" [105] and "grafting-to" processes [193,203,[313][314][315][316][317]. In particular, the latter profits from the facile incorporation of reactive groups in special positions, e.g., in the center or at the ends of the polymers, that enable efficient attachment of the macromolecules onto the substrates.…”

Section: Synthesis By Chain Growth Polymerizationsmentioning

confidence: 99%

“…The problem of incomplete conversion unbalancing the charge neutrality of polyzwitterions in post-polymerization modifications can in principle be avoided when reacting the precursor polymer with prefabricated zwitterionic reagents ( Figure 11) [193,[411][412][413][414][415][416][417][418]. Still, this implies the judicious choice of the reactive groups used for the modification.…”

Section: P-51mentioning

confidence: 99%

“…If one of these functional groups is fixed on the precursor polymer and the other one to the zwitterionic reagent, this coupling strategy holds both the potential for high coupling efficiencies and selectivities as well as (for charge neutrality) harmless residual reactive sites if remaining. So far, the use of zwitterionic alkynes has been preferred, which are coupled to polymeric azides ( Figure 12) [193,[414][415][416][417][418]. Still, the inverse strategy should be equally feasible.…”

Section: P-52mentioning

confidence: 99%

See 3 more Smart Citations

Structures and Synthesis of Zwitterionic Polymers

2014

View full text Add to dashboard Cite

Abstract:The structures and synthesis of polyzwitterions ("polybetaines") are reviewed, emphasizing the literature of the past decade. Particular attention is given to the general challenges faced, and to successful strategies to obtain polymers with a true balance of permanent cationic and anionic groups, thus resulting in an overall zero charge. Also, the progress due to applying new methodologies from general polymer synthesis, such as controlled polymerization methods or the use of "click" chemical reactions is presented. Furthermore, the emerging topic of responsive ("smart") polyzwitterions is addressed. The considerations and critical discussions are illustrated by typical examples.

show abstract

Section: Synthesis By Chain Growth Polymerizationsmentioning

confidence: 99%

Section: Synthesis By Chain Growth Polymerizationsmentioning

confidence: 99%

Section: P-51mentioning

confidence: 99%

Section: P-52mentioning

confidence: 99%

See 2 more Smart Citations

Structures and Synthesis of Zwitterionic Polymers

2014

View full text Add to dashboard Cite

show abstract

“…Nitrogen (N) availability is a major factor limiting growth and development of plants (Postma et al, 2014;Yu et al, 2014;Linkohr et al, 2002;Kraiser et al, 2011). In the biosphere, N is available in different forms, such as inorganic molecular N 2 , ammonium or nitrogen oxides, and the organic N (e.g.…”

Section: Rsa Is Controlled By Developmental Cues and The Environmentmentioning

confidence: 99%

Environmental, developmental, and genetic factors controlling root system architecture

Mansoorkhani

Seymour

Swarup

et al. 2014

Biotechnology and Genetic Engineering Reviews

View full text Add to dashboard Cite

A better understanding of the development and architecture of roots is essential to develop strategies to increase crop yield and optimize agricultural land use. Roots control nutrient and water uptake, provide anchoring and mechanical support and can serve as important storage organs. Root growth and development is under tight genetic control and modulated by developmental cues including plant hormones and the environment. This review focuses on root architecture and its diversity and the role of environment, nutrient, and water as well as plant hormones and their interactions in shaping root architecture.

show abstract

Surface modification of polyamide nanofiltration membrane by grafting zwitterionic polymers to improve the antifouling property

Xia

Cao

Kang

et al. 2014

J of Applied Polymer Sci

View full text Add to dashboard Cite

A simple two‐step surface modification method of polyamide nanofiltration membrane, involving the activation of amide groups by formaldehyde and the subsequent cerium [Ce (IV)]‐induced graft polymerization of zwitterionic 3‐(methacryloylamino) propyl‐dimethyl‐(3‐sulfopropyl) ammonium hydroxide) (MPDSAH) monomers, was employed to improve membrane antifouling property. The membranes before and after modification were characterized by attenuated total reflectance‐Fourier transform infrared spectroscopy (ATR‐FTIR), scanning electron microscopy, and atomic force microscopy. The changes in both surface chemical composition and morphology of membranes confirmed the successful graft polymerizations of MPDSAH onto polyamide nanofiltration membrane. The static water contact angle measurements showed that surface hydrophilicity of the modified membranes was significantly enhanced. As the MPDSAH concentration increased, the water flux of grafted membrane decreased gradually, while salt rejection increased slightly. The fouling experiments with bovine serum albumin solution demonstrated that modified membranes exhibited better resistance to protein fouling. © 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 41144.

show abstract

Grafting polyzwitterions onto polyamide by click chemistry and nucleophilic substitution on nitrogen: A novel approach to enhance membrane fouling resistance

Cited by 122 publications

References 54 publications

Structures and Synthesis of Zwitterionic Polymers

Structures and Synthesis of Zwitterionic Polymers

Environmental, developmental, and genetic factors controlling root system architecture

Surface modification of polyamide nanofiltration membrane by grafting zwitterionic polymers to improve the antifouling property

Contact Info

Product

Resources

About