scholarly journals Grafting Copolymerization of Hydrophilic Monomers Onto Alginate for Modification it's Structure

2014 ◽  
Vol 30 (1) ◽  
pp. 247-253 ◽  
Author(s):  
Mohammad Sadeghi ◽  
Esmat Mohammadinasab ◽  
Fatemeh Shafiei ◽  
Laleh Mansouri ◽  
Hadis Shasavari
Keyword(s):  
Grafting Copolymerization ◽  
Hydrophilic Monomers

scholarly journals Preparation and properties of hydrogel based on sawdust cellulose for environmentally friendly slow release fertilizers

2020 ◽  
Vol 9 (1) ◽  
pp. 139-152 ◽  
Author(s):  
Xiao Zhang ◽  
Yanlu Liu ◽  
Panfang Lu ◽  
Min Zhang
Keyword(s):  
Slow Release ◽  
Environmentally Friendly ◽  
Water Absorbency ◽  
The Novel ◽  
Structure And Properties ◽  
Nitrogen Release ◽  
Release Property ◽  
Slow Release Fertilizers ◽  
Grafting Copolymerization ◽  
Cross Linker

AbstractA novel hydrogel slow-release nitrogen fertilizer based on sawdust with water absorbency was prepared using grafting copolymerization. Urea was incorporated as nitrogen source in a hydrogel fertilizer. Potassium persulfate (KPS) and N,N᾽-methylenebis acrylamide (MBA) were used as the initiator and cross-linker, respectively. The structure and properties of the samples were characterized by XPS, EDS, SEM, XRD and FTIR. The effects of various salt solutions, ionic strength and pH on swelling behavior were discussed. The results showed that the largest water absorbency of the sample reached 210 g/g in distilled water. In addition, the sample had the good nitrogen release property. Thus, the novel environmentally friendly hydrogel fertilizer may be widely applied to agricultural and horticultural fields.

Studies on Grafting Copolymerization of Lactic Acid onto Cornstarch Catalyzed with Sodium Hydroxide

2011 ◽  
Vol 233-235 ◽  
pp. 1906-1910
Author(s):  
Ying Mo Hu ◽  
Qing Ling Wang ◽  
Jian Hua Zhu ◽  
Yang Liu ◽  
Xue Yang ◽  
...  
Keyword(s):  
Aqueous Solution ◽  
Lactic Acid ◽  
Sodium Hydroxide ◽  
Convenient Method ◽  
Graft Copolymerization ◽  
Good Adhesion ◽  
Acid Copolymer ◽  
Grafting Copolymerization ◽  
Grafting Degree

A convenient method to synthesize starch/lactic acid copolymer was studied in this work. Copolymer of starch graft with lactic acid (LA) was directly prepared by reaction of cornstarch with lactic acid in sodium hydroxide (NaOH) aqueous solution as a catalyst. The product was characterized by IR and WAXD, and the good adhesion between the two components has been observed by SEM. The results showed that the highest grafting degree could reach 33.60% when the graft copolymerization was carried in 0.40 mol·L-1 NaOH aqueous for 9 h at 90°C with the 1: 5~6 ratio of starch and lactic acid.

Fabrication of smart COC chips: Advantages of N-vinylpyrrolidone (NVP) monomer over other hydrophilic monomers

2013 ◽  
Vol 178 ◽  
pp. 86-95 ◽  
Author(s):  
Sunanda Roy ◽  
C.Y. Yue ◽  
S.S. Venkatraman ◽  
L.L. Ma
Keyword(s):  
Hydrophilic Monomers

Effects of hydrophilic monomers on sorptive properties of divinylbenzene-based reversed phase sorbents

Talanta ◽  
2018 ◽  
Vol 185 ◽  
pp. 427-432 ◽  
Author(s):  
Hiroya Murakami ◽  
Takuya Aoyanagi ◽  
Yuta Miki ◽  
Hiroki Tomita ◽  
Yukihiro Esaka ◽  
...  
Keyword(s):  
Reversed Phase ◽  
Hydrophilic Monomers
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