Surface modification of polypropylene macroporous membrane by marrying RAFT polymerization with click chemistry

Wu, Xiu-Min; Wang, Lili; Wang, Yun; Gu, Jia‐Shan; Yu, Hai‐Yin

doi:10.1016/j.memsci.2012.06.033

Cited by 42 publications

(13 citation statements)

References 36 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To reduce the problem of initial fouling different approaches for surface hydrophilization have been investigated such as copolymerization or grafting with hydrophilic monomers [8][9][10][11][12][13][14], blending using hydrophilic polymers [15][16][17][18][19][20], and, finally, chemical modification of the membrane polymer [21].…”

Section: Polymers 2015 7mentioning

confidence: 99%

Biocatalytic Self-Cleaning Polymer Membranes

et al. 2015

View full text Add to dashboard Cite

Polymer membrane surfaces have been equipped with the digestive enzyme trypsin. Enzyme immobilization was performed by electron beam irradiation in aqueous media within a one-step method. Using this method, trypsin was covalently and side-unspecific attached to the membrane surface. Thus, the use of preceding polymer functionalization and the use of toxic solvents or reagents can be avoided. The resulting membranes showed significantly improved antifouling properties as demonstrated by repeated filtration of protein solutions. Furthermore, the biocatalytic membrane can be simply "switched on" to actively degrade a fouling layer on the membrane surface and regain the initial permeability. The membrane pore structure (pore size and porosity) was neither damaged by the electron beam treatment nor blocked by the enzyme loading, ensuring a stable membrane performance.

show abstract

Section: Polymers 2015 7mentioning

confidence: 99%

Biocatalytic Self-Cleaning Polymer Membranes

et al. 2015

View full text Add to dashboard Cite

show abstract

“…Modification of polymers with CuAAC click reaction is very general, robust and particularly simple compared to other click chemistry reactions [34][35][36][37]. During the recent years, these reactions have been extensively applied for the modification of commercially available polymers such as PVC [38][39][40][41], polyethylene [42] and polypropylene [43,44]. In the frame of our continuous interest in developing novel polymeric materials from commercially available polymers, here, the modification of chlorinated polypropylene with poly(ethylene glycol) and poly(ɛ-caprolactone) was achieved by CuAAC click chemistry under mild conditions.…”

Section: Introductionmentioning

confidence: 99%

Polypropylene-based graft copolymers via CuAAC click chemistry

Açık¹,

Sey²,

Taşdelen³

2018

Express Polym. Lett.

View full text Add to dashboard Cite

Abstract. Graft copolymers from commercial chlorinated polypropylene (PP-Cl) possessing either poly(ethylene glycol) (PEG) or poly(ɛ-caprolactone) (PCL) grafts are synthesized by copper (I)-catalyzed azide-alkyne cycloaddition 'click' reaction (CuAAC). For this purpose, azido-functional polypropylene is prepared by nucleophilic substitution of chlorine groups of PP-Cl with azidotrimethylsilane-tetrabutylammonium fluoride. Whereas, the clickable alkyne end-functional PEG and PCL are independently synthesized by esterification reaction of poly(ethylene glycol) methyl ether with 4-pentyonic acid at room temperature and ring-opening polymerization of ε-caprolactone using stannous octoate as catalyst and propargyl alcohol as initiator. Finally, the corresponding graft copolymers, PP-g-PEG and PP-g-PCL, with different surface properties were successfully synthesized by CuAAC 'click' reaction under mild condition. Spectral, chromatographic and thermal analyses at various stages prove the formation of desired polypropylene-based graft copolymers with well-defined properties. Furthermore, the water contact angle values of PP-Cl, PP-g-PEG and PP-g-PCL are found as 90±1°, 78±1.8° and 83±2.1°, respectively.

show abstract

“…Therefore, there are continuous efforts improving the boron rejection of reverse osmosis from the perspective of materials, transport mechanism and systems [21][22][23][24]. At the same time, a series of novel membrane based technologies grow up rapidly as alternative solutions for boron removal [25][26][27][28][29]. Quite a few of these technologies are based on the complexation of boric acid with polyol compounds/polymers having vicinal hydroxy groups, which has been proven to be a more effective separation mechanism than those based on charge and size exclusions (Fig.…”

Section: Introductionmentioning

confidence: 99%