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Bao-Ku Zhu

Bio: Bao-Ku Zhu is an academic researcher from Zhejiang University. The author has contributed to research in topics: Membrane & Nanofiltration. The author has an hindex of 55, co-authored 234 publications receiving 10276 citations. Previous affiliations of Bao-Ku Zhu include Zhejiang University of Technology.


Papers
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Journal ArticleDOI
Jinhong Jiang1, Liping Zhu1, Li-Jing Zhu1, Bao-Ku Zhu1, You-Yi Xu1 
08 Nov 2011-Langmuir
TL;DR: It is indicated that the deposition behavior of pDA is not strongly dependent on the nature of the substrates, and effective strategies for exploiting the properties of dopamine to create novel functional polymer materials are found.
Abstract: This study aims to explore the fundamental surface characteristics of polydopamine (pDA)-coated hydrophobic polymer films. A poly(vinylidene fluoride) (PVDF) film was surface modified by dip coating in an aqueous solution of dopamine on the basis of its self-polymerization and strong adhesion feature. The self-polymerization and deposition rates of dopamine on film surfaces increased with increasing temperature as evaluated by both spectroscopic ellipsometry and scanning electronic microscopy (SEM). Changes in the surface morphologies of pDA-coated films as well as the size and shape of pDA particles in the solution were also investigated by SEM, atomic force microscopy (AFM), and transmission electron microscopy (TEM). The surface roughness and surface free energy of pDA-modified films were mainly affected by the reaction temperature and showed only a slight dependence on the reaction time and concentration of the dopamine solution. Additionally, three other typical hydrophobic polymer films of polytetrafluoroethylene (PTFE), poly(ethylene terephthalate) (PET), and polyimide (PI) were also modified by the same procedure. The lyophilicity (liquid affinity) and surface free energy of these polymer films were enhanced significantly after being coated with pDA, as were those of PVDF films. It is indicated that the deposition behavior of pDA is not strongly dependent on the nature of the substrates. This information provides us with not only a better understanding of biologically inspired surface chemistry for pDA coatings but also effective strategies for exploiting the properties of dopamine to create novel functional polymer materials.

628 citations

Journal ArticleDOI
Zhen-Yu Xi1, You-Yi Xu1, Liping Zhu1, Yue Wang1, Bao-Ku Zhu1 
TL;DR: In this article, a modified 3,4-dihydroxyphenylalanine (DOPA) and dopamine self-polymerized and adhered firm to the membrane surfaces in mild aqueous environments.

573 citations

Journal ArticleDOI
Jinhong Jiang1, Liping Zhu1, Li-Jing Zhu1, Hong-Tao Zhang1, Bao-Ku Zhu1, You-Yi Xu1 
TL;DR: The strategy of material surface modification reported here is substrate-independent, and applicable to a broad range of materials and geometries, which allows effective development of materials with novel functional coatings based on the mussel-inspired surface chemistry.
Abstract: A facile and versatile approach for the preparation of antifouling and antimicrobial polymer membranes has been developed on the basis of bioinspired polydopamine (PDA) in this work. It is well-known that a tightly adherent PDA layer can be generated over a wide range of material surfaces through a simple dip-coating process in dopamine aqueous solution. The resulting PDA coating is prone to be further surface-tailored and functionalized via secondary treatments because of its robust reactivity. Herein, a typical hydrophobic polypropylene (PP) porous membrane was first coated with a PDA layer and then further modified by poly(N-vinyl pyrrolidone) (PVP) via multiple hydrogen-bonding interactions between PVP and PDA. Data of water contact angle measurements showed that hydrophilicity and wettability of the membranes were significantly improved after introducing PDA and PVP layers. Both permeation fluxes and antifouling properties of the modified membranes were enhanced as evaluated in oil/water emulsion fil...

344 citations

Journal ArticleDOI
Jinhong Jiang1, Liping Zhu1, Xiao-Lin Li1, You-Yi Xu1, Bao-Ku Zhu1 
TL;DR: The results of in vitro hemocompatibility test proved that surface heparinization significantly suppressed the adhesion of platelet and enhanced the anticoagulation ability of PE membranes.

317 citations

Journal ArticleDOI
TL;DR: In this article, the polyimide/multi-walled carbon nanotubes (MWNTs) nanocomposite films were prepared by mixing of poly(amic acid) (PAA) solution and MWNTs/DMAc suspension followed by mixture casting, evaporation and thermal imidization.

275 citations


Cited by
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Journal ArticleDOI
TL;DR: In all cases, enzyme engineering via immobilization techniques is perfectly compatible with other chemical or biological approaches to improve enzyme functions and the final success depend on the availability of a wide battery of immobilization protocols.

3,016 citations

Journal ArticleDOI
TL;DR: In this paper, an extended account of the various chemical strategies for grafting polymers onto carbon nanotubes and the manufacturing of carbon-nanotube/polymer nanocomposites is given.

2,766 citations

Journal ArticleDOI
TL;DR: In this paper, a review of more than 300 publications on membrane bioreactor fouling is presented, and the authors propose updated definitions of key parameters such as critical and sustainable flux, along with standard methods to determine and measure the different fractions of the biomass.

2,113 citations

Journal ArticleDOI
TL;DR: In this article, the status of worldwide research in the thermal conductivity of carbon nanotubes and their polymer nanocomposites is reviewed, as well as the relationship between thermal conductivities and the micro- and nano-structure of the composites.

2,102 citations