<I>o</I>-CRESOLPHTHALEIN-FORMALDEHYDE POLYMER IMMOBILIZED CELLULOSE MEMBRANE AND ITS pH SENSITIVITY
نویسندگان
چکیده
منابع مشابه
Development of melamine modified urea formaldehyde resins based on strong acidic pH catalyzed urea formaldehyde polymer
To upgrade the performance of urea-formaldehyde (UF) resin bonded particleboards, melamine modified urea-formaldehyde (MUF) resins based on strong acidic pH catalyzed UF polymers were investigated. The study was conducted in a series of two experiments: 1) formulation of MUF resins based on a UF polymer catalyzed with strong acidic pH and 2) determination of the effects of increased melamine co...
متن کاملImmobilized pH Gradients: Analytical and Preparative Use
High-resolution two-dimensional polyacrylamide gel electrophoresis (2-D PAGE) has provided the means for detailed analysis of polypeptide constituents of whole cells or subcellular fractions from a wide range of sources. To date, for the most part 2-D PAGE has been utilized for analytical separations, following the method originally described by O'Farrell (1). Urea, reducing agent, and a nonion...
متن کاملEffects of different high pH solutions on the chemical stability of immobilized-polymer stationary phases.
Many chromatographic separations require high pH mobile phases for the elution of basic compounds with symmetrical peaks appropriate for quantitation. Phosphate and carbonate salts are the most common additives used to achieve these conditions. However, they act in different ways on the stability of silica-based stationary phases. To provide a faster evaluation of the effects of these high pH s...
متن کاملBioconversion of airborne formaldehyde by immobilized formaldehyde dehydrogenase from the recombinant methylotrophic yeast Hansenula polymorpha
Formaldehyde (FA) is a very toxic pollutant. FA in indoor air has a negative effect on human health and should be removed by ventilation or by conversion to non-toxic products. The formaldehyde dehydrogenase (FdDH), a NADand glutathione-dependent enzyme from recombinant methylotrophic yeast Hansenula polymorpha, was tested for its ability to oxidize airborne FA. A continuous fluidized bed biore...
متن کاملEffects of Salinity, ph and Temperature on CMC Polymer and XC Polymer Performance (TECHNICAL NOTE)
The rheological and filtration properties of drilling mud under down-hole conditions may be very different from those measured at ambient pressures and temperatures at the surface. This paper presents the results of an experimental investigation into the temperature and salinity and pH effects on drilling mud rheological and filtration properties. Results are given from tests on water base mud ...
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: Acta Polymerica Sinica
سال: 2006
ISSN: 1000-3304
DOI: 10.3724/sp.j.1105.2006.00432