Thermal stability of gold nanorods in an aqueous solution

2010 ◽  
Vol 372 (1-3) ◽  
pp. 177-181 ◽  
Author(s):  
Renxian Zou ◽  
Qiao Zhang ◽  
Qing Zhao ◽  
Feng Peng ◽  
Hongjuan Wang ◽  
...  
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
Gold Nanorods ◽  
Thermal Stability Of

KARBON LİF ÜRETİMİNDE POLİAKRİLONİTRİL ELYAFLARIN TERMAL OKSİDASYONU

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.

Thermal stability of amino acids in seafloor sediment in aqueous solution at high temperature

2006 ◽  
Vol 37 (2) ◽  
pp. 177-188 ◽  
Author(s):  
Miho Ito ◽  
Lallan P. Gupta ◽  
Harue Masuda ◽  
Hodaka Kawahata
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
Amino Acids ◽  
High Temperature ◽  
Thermal Stability Of ◽  
Seafloor Sediment

Thermal Stability of Gold Nanorods for High-Temperature Plasmonic Sensing

2013 ◽  
Vol 117 (22) ◽  
pp. 11718-11724 ◽  
Author(s):  
Nicholas A. Joy ◽  
Brian K. Janiszewski ◽  
Steven Novak ◽  
Timothy W. Johnson ◽  
Sang-Hyun Oh ◽  
...  
Keyword(s):  
Thermal Stability ◽  
High Temperature ◽  
Gold Nanorods ◽  
Plasmonic Sensing ◽  
Thermal Stability Of

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

2011 ◽  
Vol 236-238 ◽  
pp. 1766-1769
Author(s):  
Hui Ling Shen ◽  
Li Juan Long ◽  
Shi Ru Jia
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
Network Structure ◽  
Layered Structure ◽  
Polyacrylic Acid ◽  
Sem Analysis ◽  
Solution Polymerization ◽  
Aqueous Solution Polymerization ◽  
Polymerization Method ◽  
Thermal Stability Of

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.

Studies of the thermal stability of maleic anhydride co-polymers in aqueous solution

1999 ◽  
Vol 65 (2) ◽  
pp. 231-241 ◽  
Author(s):  
C. Ladavière ◽  
T. Delair ◽  
A. Domard ◽  
C. Pichot ◽  
B. Mandrand
Keyword(s):  
Thermal Stability ◽  
Aqueous Solution ◽  
Maleic Anhydride ◽  
Thermal Stability Of
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