Influence of poly(acrylic acid) grafting density on switchable protein adsorption/desorption of poly(2‐methyl‐2‐oxazoline)/poly(acrylic acid) mixed brushes

2019 ◽  
Vol 136 (42) ◽  
pp. 48135 ◽  
Author(s):  
Kai Gong ◽  
Chao Pan ◽  
Kang He ◽  
Haikun Zhu ◽  
Lijuan Chen ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Protein Adsorption ◽  
Grafting Density ◽  
Adsorption Desorption ◽  
Poly Acrylic Acid

Topology Effect of AIEgen-Appended Poly(acrylic acid) with Biocompatible Segments on Ca2+-Sensing and Protein-Adsorption-Resistance Properties

2018 ◽  
Vol 7 (6) ◽  
pp. 711-715 ◽  
Author(s):  
Fumitaka Ishiwari ◽  
Minami Sakamoto ◽  
Satoko Matsumura ◽  
Takanori Fukushima
Keyword(s):  
Acrylic Acid ◽  
Protein Adsorption ◽  
Poly Acrylic Acid

scholarly journals Fabrication of Cellulose Nanocrystal-g-Poly(Acrylic Acid-Co-Acrylamide) Aerogels for Efficient Pb(II) Removal

Polymers ◽  
2020 ◽  
Vol 12 (2) ◽  
pp. 333 ◽  
Author(s):  
Yifan Chen ◽  
Qian Li ◽  
Yujie Li ◽  
Qijun Zhang ◽  
Jingda Huang ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Adsorption Capacity ◽  
Langmuir Model ◽  
Cellulose Nanocrystal ◽  
Effective Removal ◽  
Pseudo Second Order ◽  
Repeated Use ◽  
Adsorption Desorption ◽  
Hydrolysis Of ◽  
Poly Acrylic Acid

In this work, cellulose nanocrystals (CNCs) obtained by the acid hydrolysis of waste bamboo powder were used to synthesize cellulose nanocrystal-g-poly(acrylic acid-co-acrylamide) (CNC-g-P(AA/AM)) aerogels via graft copolymerization followed by freeze-drying. The structure and morphology of the resulting aerogels were characterized by Fourier transform infrared spectroscopy (FTIR) and scanning electron microscopy (SEM), and the CNC-g-P(AA/AM) aerogels exhibited excellent absorbent properties and adsorption capacities. Subsequent Pb(II) adsorption studies showed that the kinetic data followed the pseudo-second-order equation, while the adsorption isotherms were best described using the Langmuir model. The maximum Pb(II) adsorption capacity calculated by the Langmuir model reached up to 366.3 mg/g, which is a capacity that outperformed that of the pure CNC aerogel. The CNC-g-P (AA/AM) aerogels become structurally stable through chemical cross-linking, which enabled them to be easily regenerated in HCl solution and retain the adsorption capacity after repeated use. The aerogels were found to maintain 81.3% removal efficiency after five consecutive adsorption–desorption cycles. Therefore, this study demonstrated an effective method for the fabrication of an aerogel adsorbent with an excellent reusability in the effective removal of Pb(II) from aqueous solutions.

Behavior of Surface-Anchored Poly(acrylic acid) Brushes with Grafting Density Gradients on Solid Substrates:  1. Experiment

2007 ◽  
Vol 40 (24) ◽  
pp. 8756-8764 ◽  
Author(s):  
Tao Wu ◽  
Peng Gong ◽  
Igal Szleifer ◽  
Petr Vlček ◽  
Vladimír Šubr ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Density Gradients ◽  
Grafting Density ◽  
Solid Substrates ◽  
Poly Acrylic Acid

Behavior of Surface-Anchored Poly(acrylic acid) Brushes with Grafting Density Gradients on Solid Substrates

2005 ◽  
pp. 287-315 ◽  
Author(s):  
Tao Wu ◽  
Jan Genzer ◽  
Peng Gong ◽  
Igal Szleifer ◽  
Petr Vlc̆ek ◽  
...  
Keyword(s):  
Acrylic Acid ◽  
Density Gradients ◽  
Grafting Density ◽  
Solid Substrates ◽  
Poly Acrylic Acid

scholarly journals Conformation Variation and Tunable Protein Adsorption through Combination of Poly(acrylic acid) and Antifouling Poly(N-(2-hydroxyethyl) acrylamide) Diblock on a Particle Surface

Polymers ◽  
2020 ◽  
Vol 12 (3) ◽  
pp. 566
Author(s):  
Zun Wang ◽  
Kaimin Chen ◽  
Chen Hua ◽  
Xuhong Guo
Keyword(s):  
Acrylic Acid ◽  
Protein Adsorption ◽  
Polymer Brushes ◽  
Biomedical Applications ◽  
Critical Role ◽  
Particle Surface ◽  
Ph Values ◽  
Bsa Binding ◽  
Biomaterial Surfaces ◽  
Poly Acrylic Acid

Adsorption and desorption of proteins on biomaterial surfaces play a critical role in numerous biomedical applications. Spherical diblock polymer brushes (polystyrene with photoiniferter (PSV) as the core) with different block sequence, poly(acrylic acid)-b-poly(N-(2-hydroxyethyl) acrylamide) (PSV@PAA-b-PHEAA) and poly(N-(2-hydroxyethyl) acrylamide)-b-poly(acrylic acid) (PSV@PHEAA-b-PAA) were prepared via surface-initiated photoiniferter-mediated polymerization (SI-PIMP) and confirmed by a series of characterizations including TEM, Fourier transform infrared (FTIR) and elemental analysis. Both diblock polymer brushes show typical pH-dependent properties measured by dynamic light scattering (DLS) and Zeta potential. It is interesting to find out that conformation of PSV@PAA-b-PHEAA uniquely change with pH values, which is due to cooperation of electrostatic repulsion and steric hindrance. High-resolution turbidimetric titration was applied to explore the behavior of bovine serum albumin (BSA) binding to diblock polymer brushes, and the protein adsorption could be tuned by the existence of PHEAA as well as apparent PAA density. These studies laid a theoretical foundation for design of diblock polymer brushes and a possible application in biomedical fields.

Formation and Stability of Polyelectrolyte Multilayers of Chitosan and Poly(acrylic acid)

2011 ◽  
Vol 233-235 ◽  
pp. 1411-1414
Author(s):  
Bing Tao Liu ◽  
Remco Fokkink ◽  
Arie de Keizer
Keyword(s):  
Acrylic Acid ◽  
Acid Solution ◽  
Ph Effect ◽  
Force Microscopy ◽  
Charged Surfaces ◽  
Adsorbed Mass ◽  
Microscopy Measurement ◽  
Multilayer Formation ◽  
Adsorption Desorption ◽  
Poly Acrylic Acid

The article intends to introduce the authors’ experimental study on adsorption behaviour of chitosan and poly(acrylic acid) solution on silica by reflectometry. pH effect on adsorption-desorption of Chitosan and interaction with poly(acrylic acid) polyelectrolyte multilayer on silica has been studied. Builting multilayer formation on silica by 100ppm chitosan and 25ppm Poly(acrylic acid) solution with reflectometer. Effect of ionic strengths and molecular weight of chitosan have been discussed and we built 4 layers chitosan and 3 layers PAA and check BSA adsorption and stability. Atomic force microscopy measurement has been measured in the experiment. The results show adsorption kinetics, adsorbed mass plateau values, and reversibility of the layer formation which is typical for adsorption of strongly charged polyelectrolytes onto oppositely charged surfaces.

Effect of grafting density on conformation of poly(acrylic acid) in solution by dielectric spectroscopy

Soft Matter ◽  
2018 ◽  
Vol 14 (35) ◽  
pp. 7190-7203 ◽  
Author(s):  
Xinlu Zhou ◽  
Kongshuang Zhao
Keyword(s):  
Acrylic Acid ◽  
Ethylene Oxide ◽  
Dielectric Relaxation ◽  
Dielectric Spectroscopy ◽  
Dielectric Relaxation Spectroscopy ◽  
Frequency Range ◽  
Grafting Density ◽  
Poly Ethylene Oxide ◽  
Poly Ethylene ◽  
Poly Acrylic Acid

The effect of grafting density of poly(ethylene oxide) and dodecyl groups on the conformation of poly(acrylic acid) in solution was clarified by dielectric relaxation spectroscopy over a frequency range from 40 Hz to 110 MHz.

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