Study on the Preparation and Properties of PAA/BC/Na-MMT Composites

By means of aqueous solution polymerization method, the composites of polyacrylic acid (PAA)/Bacterial cellulose (BC)/Na-MMT and PAA/Na-MMT were prepared respectively. The effects of Na-MMT content on the properties of PAA/Na-MMT and BC content on the properties of PAA/BC/Na-MMT composites were investigated. The results show that with appropriate increasing Na-MMT, the composites has good salt-resistant ability and thermal stability, mean while, the water-absorbing capacity of PAA/Na-MMT composites is significantly increased. Comparing with that of the PAA/Na-MMT hydrogel, with addition of BC content, the water-absorbing capacity and thermal stability of PAA/BC/Na-MMT are enhanced in a certain degree. The SEM analysis indicate that there are more network structure in the composites hydrogel. XRD result shows that the layered structure of Na-MMT is stripped and the prepared composites achieves peel compound.

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Preparation of TiO2/Polyacrylic Acid and Application in Photocatalytic Degradation of Methyl Orange

Polymers and Polymer Composites ◽

10.1177/096739110901700401 ◽

2009 ◽

Vol 17 (4) ◽

pp. 195-203

Author(s):

Shanxia Luo ◽

Hui Zhu ◽

Fumin Wang ◽

Feng Xin ◽

Xiaohong Yin

Keyword(s):

Aqueous Solution ◽

Methyl Orange ◽

Organic Compound ◽

Polyacrylic Acid ◽

Fine Particles ◽

Absorption Characteristic ◽

Solution Polymerization ◽

Good Activity ◽

Aqueous Solution Polymerization ◽

Degradation Of Methyl Orange

TiO2 (P25) fine particles were loaded in a polyacrylic acid (PAA), which possessed a unique absorption characteristic and was synthesised by aqueous solution polymerization. The TiO2/PAA composite was taken as a photocatalyst to degrade methyl orange (MO), the degradability resistance and reproducibility of the photocatalyst were investigated experimentally. The results showed that the TiO2/PAA photocatalyst had a good activity and stability in degradability of organic compound.

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A Novel Cement Fluid Loss Additive P1402

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.941-944.1203 ◽

2014 ◽

Vol 941-944 ◽

pp. 1203-1207 ◽

Cited By ~ 1

Author(s):

Qiang Xiao ◽

Wen Fa Xiao ◽

Xin Xin Liu

Keyword(s):

Thermal Stability ◽

Aqueous Solution ◽

High Temperature ◽

Reaction Time ◽

Performance Testing ◽

Fluid Loss ◽

Solution Polymerization ◽

Excellent Thermal Stability ◽

Aqueous Solution Polymerization ◽

Fluid Loss Additive

A novel cement fluid loss additive P1402, which synthesized using the monomers of 2-acrylamido-2-methyl-propane sulphonic acid (AMPS), acrylic acid (AA), N,N dimethyl acrylamide (DMAM) and N-Vinyl-2-pyrrolidone (NVP) by the method of aqueous solution polymerization. The ratio of monomers AMPS:AA:DMAM:NVP at 2:1.5:1:1, reaction PH at 10.8, reaction temperature at 65°Cand reaction time about 5 hours. The IR spectrum of P1402 show that the polymer with the structure of all the monomers .The fluid loss performance testing show that the forpolymers P1402 has an excellent thermal stability. The fluid loss additive P1402 has an excellent tolerance to salt and high temperature.

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Facile synthesis of highly branched poly(acrylonitrile-co-vinyl acetate)s with low viscosity and high thermal stability via radical aqueous solution polymerization

Polymer Chemistry ◽

10.1039/c3py01751f ◽

2014 ◽

Vol 5 (10) ◽

pp. 3326-3334 ◽

Cited By ~ 16

Author(s):

Wenyan Huang ◽

Chang Liu ◽

Hongjun Yang ◽

Xiaoqiang Xue ◽

Bibiao Jiang ◽

...

Keyword(s):

Thermal Stability ◽

Aqueous Solution ◽

Chain Transfer ◽

High Thermal Stability ◽

Solution Polymerization ◽

Facile Synthesis ◽

Low Viscosity ◽

Aqueous Solution Polymerization ◽

Chain Transfer Monomer ◽

Poly Acrylonitrile

Branched P(AN-co-VAc)s were obtained via radical polymerization using a new chain transfer monomer of 2-(3-mercaptopropionyloxy) ethyl methacrylate.

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KARBON LİF ÜRETİMİNDE POLİAKRİLONİTRİL ELYAFLARIN TERMAL OKSİDASYONU

Euroasia Journal of Mathematics, Engineering, Natural and Medical Sciences ◽

10.38065/euroasiaorg.674 ◽

2021 ◽

Vol 8 (17) ◽

pp. 160-170

Author(s):

Mahbubor Rahman ◽

Tuba DEMIREL ◽

Ismail KARACAN

Keyword(s):

Thermal Stability ◽

Aqueous Solution ◽

Thermal Oxidation ◽

Oxidation Process ◽

Ammonium Persulfate ◽

Oxidation Reactions ◽

Carbon Yield ◽

Thermal Stability Of ◽

Pan Fibers

Thermal oxidation of polyacrylonitrile (PAN) fibers was accomplished at temperatures up to 250°C for different oxidation times. Chemical integration of PAN fibers with an aqueous solution of ammonium persulfate was performed before starting thermal oxidation. The results recommend that ammonium persulfate integration enhanced the oxidation reactions of the PAN fibers and resulting in enhanced thermal stability. Ammonium persulfate impregnation followed by the oxidation process in the air environment leads to significant deviations in the characteristics of PAN fibers. To perform structural characterization of the raw and ammonium persulfate (APS) incorporated and stabilized samples, XRD, IR-spectroscopy, TGA was executed in this study. Investigation of the XRD and infrared spectroscopy outcomes recommended quick aromatization reactions with growing oxidation periods. The TGA traces indicated a comparative enhancement in the thermal stability of the PAN fibers by the increased carbon yield with the rise of the oxidation time. The overall findings recommend that ammonium persulfate incorporation was very influential in stimulating the oxidation process.

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Aqueous solution polymerization of acrylamide to high conversion: 2. Branching studies

Polymer ◽

10.1016/0032-3861(88)90212-1 ◽

1988 ◽

Vol 29 (1) ◽

pp. 134-137 ◽

Cited By ~ 5

Author(s):

M.H.Rafi'ee Fanood ◽

Maurice H. George

Keyword(s):

Aqueous Solution ◽

High Conversion ◽

Solution Polymerization ◽

Aqueous Solution Polymerization

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Properties and Synthesis of Kaolin / Potassium Polyacrylate / Acrylamide Composite Superabsorbent Resin

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.287-290.1331 ◽

2011 ◽

Vol 287-290 ◽

pp. 1331-1334

Author(s):

Hao Ren ◽

Jie Li ◽

Yu Fen Zhang ◽

Tai Zhong Huang

Keyword(s):

Aqueous Solution ◽

Saline Water ◽

Monomer Concentration ◽

Water Absorbency ◽

Solution Polymerization ◽

Synthetic Resin ◽

Polymer Molecules ◽

Aqueous Solution Polymerization ◽

Crosslinker Concentration ◽

Superabsorbent Resin

The aqueous solution polymerization methods were used for the synthesis of superabsorbent resin. The effects of different experimental factors on synthetic resin water absorbency were investigated in this paper. The variables examined in this study included monomer concentration, neutralization degree, initiator and crosslinker concentration, reaction temperature and time, etc. The maximum absorbencies of distilled and 0.9% saline water are 919 times and 92 times respectively under optimum condition. Analysis from FTIR and SEM shown the polymer molecules can be firmly fixed with kaolin, the bonding of kaolin and polymer is good in CSR.

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