Navigation Links
Acrylamide Polymerization A Practical Approach

concentrates, it is important to allow the monomer gel solution, once prepared, to equilibrate to room temperature before being evacuated (if cold solutions are placed under vacuum they tend to stay cold).

Oxygen
The formation of polyacrylamide gels proceeds via free radical polymerization. The reaction is therefore inhibited by any element or compound that serves as a free radical trap (Chrambach 1985). Oxygen is such an inhibitor. Oxygen, present in the air, dissolved in gel solutions, or adsorbed to the surfaces of plastic, rubber, etc., will inhibit, and in extreme cases prevent, acrylamide polymerization. Proper degassing is critical for reproducibility. Therefore, one of the most important steps in the preparation of polyacrylamide gels is the evacuation, or degassing of gel solutions immediately prior to pouring the gel. This is done by placing the flask of gel solution in a vacuum chamber or under a strong aspirator. In some cases, a vacuum pump may be required.

Buffer stock solutions and monomer stock solutions are usually stored at 4C. Cold solutions have a greater capacity for dissolved oxygen. The process of degassing is faster and more complete if the gel solution is brought to room temperature (2325C) before degassing begins. Furthermore, if a cold gel solution is placed under vacuum, the process of evacuation tends to keep the solution cold. Pouring a gel with a cold solution will have a substantial negative effect on the rate of polymerization and on the quality of the resulting gel.

Polymerization in which riboflavin is used as one of the initiators calls for degassing. The conversion of riboflavin from the flavo to the leuco form (the species
'"/>

Source:


Page: All 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20

Related biology technology :

1. Quantitation of Acrylamide in Food Samples on the Finnigan TSQ Quantum Discovery by LC/APCI-MS/MS
2. Practical Applications of HyperDSC in a Pharmaceutical Laboratory
3. Practical Aspects of Evaluation of Chromatographic Data in Size Exclusion Chromatography
4. Separation and Comparison of Proteins From Virulent and Nonvirulent Strains of the Fish Pathogen Flavobacterium psychrophilum, Using a 2-D Electrophoretic Approach
5. Simple Approaches for Optimization of RT-PCR
Post Your Comments:
*Name:
*Comment:
*Email:
TAG: Acrylamide Polymerization Practical Approach

(Date:12/3/2009)TUSTIN, Calif., Dec. 3 Peregrine Pharmaceuticals, Inc. (Nasdaq: PPHM ) today announced that it will release its financial results for the second quarter of fiscal year 2010 on December 10, 2009 at 7
(Date:12/2/2009)MANILA, Philippines, Dec. 2 Spectrum Blue Steel is emerging as one of the fastest growing green energy companies on the planet. Through the efforts of True Green Energy Group and True Green Planet,s
(Date:12/2/2009)COPENHAGEN, Dec. 2 The world,s first concept demonstration tires made with BioIsoprene technology, a breakthrough alternative to replace a petrochemically produced ingredient in the manufacture of
(Date:12/2/2009)CAMBRIDGE, Mass., Dec. 2 TechConnect World, an event bringing together the leaders in technology development and product integration in cleantech, nanotech, biotech and MEMS, announced the December 1
Breaking Biology Technology:Peregrine Pharmaceuticals to Report Second Quarter FY 2010 Financial Results 2Spectrum Blue Steel partners with Famous Chemists for Procuring Profitable Applications from Garbage Using the Biosphere MKV and Electrostatic Precipitators 2Spectrum Blue Steel partners with Famous Chemists for Procuring Profitable Applications from Garbage Using the Biosphere MKV and Electrostatic Precipitators 3The World's First Goodyear Concept Tires Made with BioIsoprene(TM) Technology Arrive in Copenhagen in time for United Nations Climate Change Conference 2The World's First Goodyear Concept Tires Made with BioIsoprene(TM) Technology Arrive in Copenhagen in time for United Nations Climate Change Conference 3Deadline Approaching for Largest Commercialization Event for Nanotech & Clean Technologies 2Deadline Approaching for Largest Commercialization Event for Nanotech & Clean Technologies 3
(Date:12/4/2009)A major discovery is challenging accepted thinking about amyloids the fibrous protein deposits associated with diseases such as Alzheimer,s and Parkinson,s and may open up a potential new area for t
(Date:12/3/2009)In the 1980s, Harald zur Hausen and his co-workers discovered that specific types of human papillomavirus (HPV) cause cervical cancer. Scientists soon found out how these pathogens cause cells to dege
(Date:12/3/2009)The extinction of plant and animal species can be likened to emptying a museum of its collection, or dumping a cabinet full of potential medicines into the trash, or replacing every local cuisine with
Breaking Biology News(10 mins):New therapy targets for amyloid disease 2Papillomavirus silences innate immune response 2Species down, disease up 2Species down, disease up 3Species down, disease up 4Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 1Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 2Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 3Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 4Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 5Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 6Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 7Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 8Schering Plough Announces Phase II and III Data for Corifollitropin Alfa 12868 9Hormones May Affect Neurological Disease Risk 50513 1Hormones May Affect Neurological Disease Risk 50513 2Antibiotics May Boost Risk for Recurrent Ear Infection 50511 1Antibiotics May Boost Risk for Recurrent Ear Infection 50511 2
Mouse Anti-Mannose Receptor Monoclonal Antibody, Biotin Conjugated, Clone 15-Feb from Abcam
TE Buffer from Upstate
Mouse Anti-DcR1 Monoclonal Antibody, Biotin Conjugated, Clone DJR3 from Abcam
L-Selenomethionine from Calbiochem
Biology Products: