scholarly journals Synthesis and Adsorption Properties for Cationic Dyes of Acrylic Acid/Vermiculite Hydrogel Initiated by Glow-Discharge-Electrolysis Plasma

2016 ◽  
Vol 37 (4) ◽  
pp. 996-1007 ◽  
Author(s):  
Quanfang Lu ◽  
Jidong Zheng ◽  
Jie Yu ◽  
Shuxiu Yang ◽  
Deli Ma ◽  
...  
Keyword(s):  
Glow Discharge ◽  
Acrylic Acid ◽  
Adsorption Properties ◽  
Cationic Dyes ◽  
Glow Discharge Electrolysis ◽  
Glow Discharge Electrolysis Plasma

scholarly journals A promising absorbent of acrylic acid/poly(ethylene glycol) hydrogel prepared by glow-discharge electrolysis plasma

2012 ◽  
Vol 10 (4) ◽  
pp. 1349-1359 ◽  
Author(s):  
Quanfang Lu ◽  
Jie Yu ◽  
Jinzhang Gao ◽  
Wu Yang ◽  
Yan Li
Keyword(s):  
Heavy Metal ◽  
Glow Discharge ◽  
Acrylic Acid ◽  
Ethylene Glycol ◽  
Metal Ion ◽  
Heavy Metal Ion ◽  
Poly Ethylene Glycol ◽  
Glow Discharge Electrolysis ◽  
Poly Ethylene ◽  
Glow Discharge Electrolysis Plasma

AbstractAn acrylic acid/poly(ethylene glycol) (AAc/PEG) hydrogel was synthesized in aqueous solution by a simple one-step method using glow-discharge electrolysis plasma (GDEP) technique. The structure of AAc/PEG hydrogel was characterized by Fourier transform infrared spectroscopy (FT-IR) and X-ray photoelectron spectroscopy (XPS). Factors influencing the adsorption of heavy-metal ions such as solution pH, contact time, initial heavy-metal ion concentration were examined systematically by batch experiments. Results showed that both chemical complexation and ion exchange played an important role for heavy-metal ion adsorption onto AAc/PEG hydrogel. The adsorption isothermals followed the Langmuir isotherm and the adsorption kinetics fitted the pseudo-second-order model at 25°C with a pH 6. In addition, AAc/PEG hydrogel can be also regenerated and re-used.

Electrolyte Effect to Copolymer Grafting of Starch onto Natural Rubber Using Glow Discharge Electrolysis Plasma (GDEP) Method

2019 ◽  
Vol 951 ◽  
pp. 77-82 ◽  
Author(s):  
Anisa Agita ◽  
Bilal Islam Diviva ◽  
Muhammad Abizar Yusa Alfiando ◽  
Biran Gufran ◽  
Mochamad Chalid
Keyword(s):  
Glow Discharge ◽  
Natural Rubber ◽  
Coupling Agent ◽  
Starch Content ◽  
Natural Rubber Latex ◽  
Rubber Latex ◽  
Interesting Study ◽  
Study Results ◽  
Glow Discharge Electrolysis ◽  
Glow Discharge Electrolysis Plasma

Natural rubber has an important role in many applications such as tyre products due to excellent elasticity and high friction causing wear on the tire and leading to energy dissipation in the form of heat and noise. Although reinforcing both inorganic and organic fillers can be a solution, it generally needs expensive coupling agent. Finding an excellent coupling agent by considering to environmentally friendly materials and economic aspect, is an interesting study. This study reported modification of natural rubber through copolymer grafting of starch onto natural rubber latex using Glow Discharge Electrolysis Plasma (GDEP) with varying of electrolyte. The experimental indicated that the electrolytes generally give significant effect to percent yield of the hybrid natural rubber-starch product. The highest percent yield is obtained from adding KCl. Addition of the divalent salts such as MgCl2and CaCl2disturbs the process due to reaction the salts with stabilizing system in natural rubber latex. Addition of NaOH is able to enhance the reaction performance with considering the radical elements recombination. The starch part as polar part and the natural rubber as non polar part building up the hybrid natural rubber-starch products, correlate with hydrophilicity and degradation of the both parts. This study results in the lowest contact angle of 54.80, the highest percent yield of 8.6 %,, and the highest starch content in the product of 1.6%.

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