منابع مشابه
Hydrolytic stability of hydrazones and oximes.
Molecules containing carbon–nitrogen double bonds are prevalent in both chemical and biological contexts. The foundations for our current understanding of carbon–nitrogen double-bond formation and hydrolysis were laid by seminal work on hydrazone hydrolysis and formation, and by contributions from mechanistic studies on enzymes that utilize pyridoxal phosphate. In particular, the meticulous kin...
متن کاملEffect of mixed silanes on the hydrolytic stability of composites.
A filler for a urethanedimethacrylate composite was silanated with mixtures of fluoroalkyl-, aminoalkyl-, phenyl-, vinyl-, bis silyl ethane- and 3-methacryloxypropyltrimethoxysilane (MAOP) in an attempt to increase the hydrophobicity of the coupling agent layer. Diametral tensile strength was used to evaluate composites stored for (1) 24 h in 23 degrees C (RT) air; (2) 24 h in RT air plus 24 h ...
متن کاملHydrolytic stability of experimental hydroxyapatite-filled dental composite materials.
OBJECTIVES The purpose of this study was to analyze the behavior in water, related to mechanical properties, of experimental composites for dental restoration. METHODS The studied materials were composed of a visible-light-curing monomer mixture (Bis-GMA and TEGDMA or HEMA) and micrometric, nanometric or a mixture of both sizes hydroxyapatite particles as a reinforcing filler. Filler particle...
متن کاملStability Study of Pravastatin under Hydrolytic Conditions Assessed by Hplc
In this work an HPLC stability-indicating method was developed and applied to study the hydrolytic behavior of pravastatin in different pHs and temperatures. From the system suitability test, the selected chromatographic conditions were a C-18 column, acetonitrile-30 mmol L-1 phosphate buffer solution pH 2 (28:72) as mobile phase, 40oC temperature column, a flux of 1 mL/min and 239 nm as wavele...
متن کاملHydrolytic stability of silanated zirconia-silica-urethane dimethacrylate composites.
The effect of the method of silanation of zirconia-silica by 3-methacryloxypropyltrimethoxysilane (MAPM) and 3-acryloxypropyltrimethoxysilane (APM) on the diametral tensile and transverse strength of composites made from these silanated fillers and a urethane dimethacrylate was determined after 0-108 h of boiling in water. The water sorption of these composites was also measured at times up to ...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of Applied Polymer Science
سال: 1974
ISSN: 0021-8995,1097-4628
DOI: 10.1002/app.1974.070180130