Shopping on line can be easy, simple and save you lots of money. It can also take a lot of your time, frustrate you, and result in unwanted purchases. Now the same can be said for regular high street shopping, but with the vast opportunity presented by the Internet it will pay you to spend a few minutes reading this and understanding how to better optimize your Hermann Staudinger shopping experience:

1. Compare - without doubt the biggest advantage that the Hermann Staudinger offers shoppers today is the ability to compare thousands of Hermann Staudinger at a time. This is a great thing, but not necessarily all the time! Too much can be daunting at times so take advantage of the great comparison sites and where possible let them do the hard work for you.

2. Research - if it has been said it will be on the internet. Ignorance is no longer a justifiable reason for buying the wrong thing. Take the time to research in detail everything that you could possible want to know about

3. Testimonials - don't know anybody that has bought a Hermann Staudinger? Wrong! If the Hermann Staudinger is good the internet will let you know. Use the Internet as a friend and get testimonials before you buy.

4. Questions - Got a question about Hermann Staudinger then search the Forums, FAQ's, Blogs etc. Don't be afraid to ask .....

5. Reputation - Never heard of the company selling Hermann Staudinger? Don't worry, no reason why you should know every company in the world, but you know someone that does! Use the internet to find out what people are saying about Hermann Staudinger and build up a picture of their reputation for sales, returns, customer service, delivery etc.

6. Returns - still worried that even after all of the above your Hermann Staudinger wont be what you want? Check out the returns policy. There is so much competition now that someone, somewhere is bound to offer the terms that you are comfortable with.

7. Feedback - happy with your Hermann Staudinger then let people know, after all you are depending on others people input in your buying decision, so why not give a little back.

8. Security - check for the yellow padlock on the Hermann Staudinger site before you buy, and the s after http:/ /i.e. https:// = a secure site

9. Contact - got a question about Hermann Staudinger, or want to leave a comment then check out the sites contact page. Reputable companies have them and respond.

10. Payment - ready to pay for your Hermann Staudinger, then use your credit card or PayPal! Be aware of companies that don't accept them, there may be genuine reasons but given the huge amount of choice you have when buying online there is no reason at all not to buy via credit card or PayPal.

{{Infobox_Scientist| name=Hermann Staudinger| image=Hermann Staudinger.jpg| birth_date = | birth_place = Worms, Germany, Grand Duchy of Hesse,German Empire, [Germany| alma_mater = [University of Halle
[University of Karlsruhe
ETH Zürich
University of Freiburg| doctoral_students = [Lavoslav Ružička| prizes = [Nobel Prize in Chemistry, [1881 – September 8, 1965) was a Germany chemist who demonstrated the existence of macromolecules which he characterized as polymers. For this work he received the 1953 Nobel Prize in Chemistry. He is also known for his discovery of ketenes and of the Staudinger reaction.

Early work Hermann Staudinger was born in 1881 in Worms, Germany. After receiving his Ph.D. from the University of Halle in 1903, Staudinger took a position at the University of Strasbourg. It was here that he discovered the ketenes, a family of molecules characterized by the general form depicted in Figure 1. Ketenes would prove a synthetically-important intermediate for the production of yet-to-be-discovered antibiotics such as penicillin and amoxicillin.

In 1907, Staudinger began an assistant professorship at the University of Karlsruhe where he successfully isolated a number of useful organic compounds (including a synthetic coffee flavoring) as more completely reviewed by Mülhaupt.

The Staudinger reaction In 1912, Staudinger took on a new position at the Swiss Federal Institute of Technology in Zurich, Switzerland. One of his earliest discoveries came in 1919, when he and colleague Meyer reported that azides react with triphenylphosphine to form phosphazide (Figure 2).Staudinger, H.; Meyer, J. Helv. Chim. Acta 1919, 2, 635. This reaction – commonly referred to as the Staudinger reaction – produces a high phosphazide yield.

Polymer chemistry While at Karlsruhe and later, Zurich, Staudinger began research in the chemistry of rubber, for which very high molecular mass had been measured by the physical methods of François-Marie Raoult and Jacobus Henricus van 't Hoff. Contrary to prevailing ideas (see below), Staudinger proposed in a landmark paper published in 1920 that rubber and other polymeric substances such as starch, cellulose and proteins are long chains of short repeating molecular units linked by covalent bonds.Staudinger, H. Ber. Deut. Chem. Ges. 1920, 53, 1073. In other words, polymers are like chains of paper clips, made up of small constituent parts linked from end to end (Figure 3).

At the time leading organic chemists such as Hermann Emil Fischer and Heinrich Wieland.Feldman, S. D.; Tauber, A. I. Bull. Hist. Med. 1997, 17(4), 623-650. believed that the measured high molecular weights were only apparent values caused by the aggregation of small molecules into colloids. At first the majority of Staudinger’s colleagues refused to accept the possibility that small molecules could link together covalently to form high-molecular weight compounds. As Mülhaupt aptly notes, this is due in part to the fact that molecular structure and bonding theory were not fully understood in the early 20th century.

Further evidence to support Staudinger’s hypothesis emerged in the 1930s. High molecular weights of polymers were confirmed by osmotic pressure, and also by Staudinger’s measurements of viscosity in solution. The X-ray diffraction studies of polymers by Herman Mark provided direct evidence for long chains of repeating molecular units. And the synthetic work led by Wallace Carothers demonstrated that polymers such as nylon and polyester could be prepared by well-understood organic reactions.

Legacy Staudinger’s groundbreaking elucidation of the nature of the high-molecular weight compounds he termed Makromoleküle paved the way for the birth of the field of polymer chemistry.Staudinger, H. Trans. Faraday Soc. 1933, 29, 18-32. Staudinger himself saw the potential for this science long before it was fully realized. “It is not improbable,” Staudinger smartly commented in 1936, “that sooner or later a way will be discovered to prepare artificial fibers from synthetic high-molecular products, because the strength and elasticity of natural fibers depend exclusively on their macro-molecular structure – i.e., on their long thread-shaped molecules.”Staudinger, H. Trans. Faraday Soc. 1936, 32, 323-335. Staudinger founded the first polymer chemistry journal in 1940,Meisel, I.; Mülhaupt, R. Macromol. Chem. Phys. 2003, 204, 195-206. and in 1953 received the Nobel Prize in Chemistry for “his discoveries in the field of macromolecular chemistry.” The Nobel Prize in Chemistry 1953 (accessed Mar 2006). His pioneering research has afforded the world myriad plastics, textiles, and other polymeric materials which make consumer products more affordable, attractive, and fun.

See also

• Heidegger and Nazism

References

• • 
    
    External links
    • Staudinger’s life and career.
    
    
    {{Infobox_Scientist| name=Hermann Staudinger| image=Hermann Staudinger.jpg| birth_date = | birth_place = Worms, Germany, Grand Duchy of Hesse,German Empire, [Germany| alma_mater = [University of Halle
    [University of Karlsruhe
    ETH Zürich
    University of Freiburg| doctoral_students = [Lavoslav Ružička| prizes = [Nobel Prize in Chemistry, [1881 – September 8, 1965) was a Germany chemist who demonstrated the existence of macromolecules which he characterized as polymers. For this work he received the 1953 Nobel Prize in Chemistry. He is also known for his discovery of ketenes and of the Staudinger reaction.
    
    Early work Hermann Staudinger was born in 1881 in Worms, Germany. After receiving his Ph.D. from the University of Halle in 1903, Staudinger took a position at the University of Strasbourg. It was here that he discovered the ketenes, a family of molecules characterized by the general form depicted in Figure 1. Ketenes would prove a synthetically-important intermediate for the production of yet-to-be-discovered antibiotics such as penicillin and amoxicillin.
    
    In 1907, Staudinger began an assistant professorship at the University of Karlsruhe where he successfully isolated a number of useful organic compounds (including a synthetic coffee flavoring) as more completely reviewed by Mülhaupt.
    
    The Staudinger reaction In 1912, Staudinger took on a new position at the Swiss Federal Institute of Technology in Zurich, Switzerland. One of his earliest discoveries came in 1919, when he and colleague Meyer reported that azides react with triphenylphosphine to form phosphazide (Figure 2).Staudinger, H.; Meyer, J. Helv. Chim. Acta 1919, 2, 635. This reaction – commonly referred to as the Staudinger reaction – produces a high phosphazide yield.
    
    Polymer chemistry While at Karlsruhe and later, Zurich, Staudinger began research in the chemistry of rubber, for which very high molecular mass had been measured by the physical methods of François-Marie Raoult and Jacobus Henricus van 't Hoff. Contrary to prevailing ideas (see below), Staudinger proposed in a landmark paper published in 1920 that rubber and other polymeric substances such as starch, cellulose and proteins are long chains of short repeating molecular units linked by covalent bonds.Staudinger, H. Ber. Deut. Chem. Ges. 1920, 53, 1073. In other words, polymers are like chains of paper clips, made up of small constituent parts linked from end to end (Figure 3).
    
    At the time leading organic chemists such as Hermann Emil Fischer and Heinrich Wieland.Feldman, S. D.; Tauber, A. I. Bull. Hist. Med. 1997, 17(4), 623-650. believed that the measured high molecular weights were only apparent values caused by the aggregation of small molecules into colloids. At first the majority of Staudinger’s colleagues refused to accept the possibility that small molecules could link together covalently to form high-molecular weight compounds. As Mülhaupt aptly notes, this is due in part to the fact that molecular structure and bonding theory were not fully understood in the early 20th century.
    
    Further evidence to support Staudinger’s hypothesis emerged in the 1930s. High molecular weights of polymers were confirmed by osmotic pressure, and also by Staudinger’s measurements of viscosity in solution. The X-ray diffraction studies of polymers by Herman Mark provided direct evidence for long chains of repeating molecular units. And the synthetic work led by Wallace Carothers demonstrated that polymers such as nylon and polyester could be prepared by well-understood organic reactions.
    
    Legacy Staudinger’s groundbreaking elucidation of the nature of the high-molecular weight compounds he termed Makromoleküle paved the way for the birth of the field of polymer chemistry.Staudinger, H. Trans. Faraday Soc. 1933, 29, 18-32. Staudinger himself saw the potential for this science long before it was fully realized. “It is not improbable,” Staudinger smartly commented in 1936, “that sooner or later a way will be discovered to prepare artificial fibers from synthetic high-molecular products, because the strength and elasticity of natural fibers depend exclusively on their macro-molecular structure – i.e., on their long thread-shaped molecules.”Staudinger, H. Trans. Faraday Soc. 1936, 32, 323-335. Staudinger founded the first polymer chemistry journal in 1940,Meisel, I.; Mülhaupt, R. Macromol. Chem. Phys. 2003, 204, 195-206. and in 1953 received the Nobel Prize in Chemistry for “his discoveries in the field of macromolecular chemistry.” The Nobel Prize in Chemistry 1953 (accessed Mar 2006). His pioneering research has afforded the world myriad plastics, textiles, and other polymeric materials which make consumer products more affordable, attractive, and fun.
    
    See also
    • Heidegger and Nazism
    
    
    References
    • • 
        
        External links
        • Staudinger’s life and career.
        
        
        
        
        

        Hermann Staudinger - Wikipedia, the free encyclopedia
        Hermann Staudinger (March 23, 1881 – September 8, 1965) was a German chemist who demonstrated the existence of macromolecules which he characterized as polymers.

        Hermann Staudinger - Biography
        Biography. Hermann Staudinger was born in Worms on the 23rd of March 1881. His father was Dr. Franz Staudinger. Staudinger was educated in Worms, matriculated in 1899, and ...

        Chemistry 1953
        div class="l_inside">

        Hermann Staudinger
        Hermann Staudinger (1881 - 1965) discovered the structure of polymers. Hermann Staudinger was born at Worms in Germany on 23 March 1881.

        Staudinger, Hermann
        20th Century. Born: Worms (Germany), 1881 Died: Freiburg (Germany), 1965. After studying in Halle, Darmstadt and München, Staudinger became an assistant in Straßburg (Strasbourg ...

        Hermann Staudinger – Wikipedia
        Hermann Staudinger (* 23. März 1881 in Worms; † 8. September 1965 in Freiburg im Breisgau) war ein deutscher Chemiker und Nobelpreisträger.

        Staudinger, Hermann - Hutchinson encyclopedia article about Staudinger ...
        German organic chemist who was awarded the Nobel Prize for Chemistry in 1953 for his discoveries in macromolecular chemistry, of which he was the founder.

        Hermann Staudinger - Wikipédia
        Hermann Staudinger (23 mars 1881 à Worms - 8 septembre 1965 à Fribourg-en-Brisgau) fut un chimiste allemand. En 1953, il gagna le prix Nobel de chimie pour avoir démontré l ...

        Hermann Staudinger
        Nobel Winners picture, Nobel Winners Bio ... Hermann Staudinger (1881-1965) German chemist who won the 1953 Nobel Prize for Chemistry for demonstrating that polymers are ...

        The Foundation of Polymer Science by Hermann Staudinger
        Staudinger's life and career. Hermann Staudinger was born in Worms on the Rhine on March 23, 1881. Because he loved plants and flowers, he studied botany under Georg Klebs at the ...