Efficient reclamation phosphate by alginate-g-BMOF using poly(N-isopropyl acrylamide-co-acrylamide) as coating for temperature-responsive slow-release P-fertilizer

2022 ◽  
Author(s):  
Zhengxian Wang ◽  
Jiankang Lu ◽  
Chengyi Wu ◽  
Youmeng Dan ◽  
Guoxiang Li ◽  
...  
Keyword(s):  
Slow Release ◽  
Temperature Responsive ◽  
Isopropyl Acrylamide ◽  
P Fertilizer

scholarly journals Deswelling Induced Morphological Changes in Dual pH and Temperature Responsive Ultra-Low Crosslinked Poly (N-Isopropyl Acrylamide)-Co-Acrylic Acid Microgels

2018 ◽  
Author(s):  
Molla Islam ◽  
Maddie Tumbarello ◽  
Andrew Lyon
Keyword(s):  
Light Scattering ◽  
Acrylic Acid ◽  
Morphological Changes ◽  
Scattering Data ◽  
Ionization State ◽  
Force Microscopy ◽  
Temperature Responsive ◽  
Atomic Force ◽  
Isopropyl Acrylamide ◽  
The Impact

<div>We demonstrated the deswelling induced morphological change in dual pH and Temperature responsive ultra-low crosslinked Poly (N-isopropyl acrylamide)-co-acrylic acid microgels. The responsivity with pH and temperature were studied by light scattering and atomic force microscopy. Light scattering data suggest that at pH 4.5 the microgels undergo multiple transitions associated with collapse of pNIPAm-rich segments and repulsion between the AAc-rich segments. The evolution of punctate structures around the periphery or throughout the whole microgels at pH 4.5 and 6.5 respectively was revealed by AFM, further illustrating the heterogeneous deswelling present in the ionized copolymer microgels.</div><div>The impact of this study and understanding how ionization state of copolymer dictates the overall structural properties of microgels will widen our understanding for their applications in biotechnology</div><div><b><br></b></div>

Using dioxane and water as mixed solvents to prepare pH and temperature dual responsive poly(N-isopropyl acrylamide-co-itaconic acid) hydrogels

e-Polymers ◽  
2008 ◽  
Vol 8 (1) ◽  
Author(s):  
Youdao Ling ◽  
Mangeng Lu
Keyword(s):  
Itaconic Acid ◽  
Mixed Solvents ◽  
Chemical Compositions ◽  
Temperature Responsive ◽  
Dual Responsive ◽  
Isopropyl Acrylamide ◽  
Equilibrium Swelling ◽  
Chain Conformations ◽  
Responsive Hydrogels ◽  
Equilibrium Swelling Ratios

AbstractpH and temperature dual responsive hydrogels based on itaconic acid (IA) and N-isopropylacrylamide (NIPAAm) were prepared by means of water and dioxane as mixed solvents. The chemical compositions, structures and morphologies of these hydrogels were characterized by FTIR, TGA and SEM, and their pH and temperature responsive behaviours were investigated through equilibrium swelling ratios, deswelling and reswelling kinetics. The results showed the hydrogels fabricated in this condition had expanded chain conformations and macroporous network structures, and exhibited the larger swelling ratios as well as improved deswelling/reswelling dynamics.

Cationic Temperature-Responsive Poly(N-isopropyl acrylamide) Graft Copolymers: from Triggered Association to Gelation

Langmuir ◽  
2008 ◽  
Vol 24 (14) ◽  
pp. 7099-7106 ◽  
Author(s):  
R. Liu ◽  
P. De Leonardis ◽  
F. Cellesi ◽  
N. Tirelli ◽  
B. R. Saunders
Keyword(s):  
Graft Copolymers ◽  
Temperature Responsive ◽  
Isopropyl Acrylamide

scholarly journals Deswelling Induced Morphological Changes in Dual pH and Temperature Responsive Ultra-Low Crosslinked Poly (N-Isopropyl Acrylamide)-Co-Acrylic Acid Microgels

2018 ◽  
Author(s):  
Molla Islam ◽  
Maddie Tumbarello ◽  
Andrew Lyon
Keyword(s):  
Light Scattering ◽  
Acrylic Acid ◽  
Morphological Changes ◽  
Scattering Data ◽  
Ionization State ◽  
Force Microscopy ◽  
Temperature Responsive ◽  
Atomic Force ◽  
Isopropyl Acrylamide ◽  
The Impact

<div>We demonstrated the deswelling induced morphological change in dual pH and Temperature responsive ultra-low crosslinked Poly (N-isopropyl acrylamide)-co-acrylic acid microgels. The responsivity with pH and temperature were studied by light scattering and atomic force microscopy. Light scattering data suggest that at pH 4.5 the microgels undergo multiple transitions associated with collapse of pNIPAm-rich segments and repulsion between the AAc-rich segments. The evolution of punctate structures around the periphery or throughout the whole microgels at pH 4.5 and 6.5 respectively was revealed by AFM, further illustrating the heterogeneous deswelling present in the ionized copolymer microgels.</div><div>The impact of this study and understanding how ionization state of copolymer dictates the overall structural properties of microgels will widen our understanding for their applications in biotechnology</div><div><b><br></b></div>

Evaluation of a Biochar-Based Slow-Release P Fertilizer to Improve Spinacia oleracea P Use, Yield, and Nutritional Quality

2021 ◽  
Author(s):  
Cindy Sepúlveda-Cadavid ◽  
Jhon H. Romero ◽  
Maicol Torres ◽  
Evelyn Becerra-Agudelo ◽  
Julián E. López
Keyword(s):  
Nutritional Quality ◽  
Slow Release ◽  
Spinacia Oleracea ◽  
P Fertilizer
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