হেরমান স্টাউডিঞ্জার: সংশোধিত সংস্করণের মধ্যে পার্থক্য

বিষয়বস্তু বিয়োগ হয়েছে বিষয়বস্তু যোগ হয়েছে
Jdebabrata (আলোচনা | অবদান)
Jdebabrata (আলোচনা | অবদান)
৫৭ নং লাইন:
 
In 1926 he was appointed lecturer of chemistry at the [[University of Freiburg]] at Freiburg im Breisgau (Germany), where he spent the rest of his career.<ref>[https://www.nobelprize.org/nobel_prizes/chemistry/laureates/1953/staudinger-bio.html Biography on Nobel prize website]</ref> In 1927, he married the Latvian botanist, [[Magda Staudinger|Magda Voita]] (also shown as ({{lang-de|Magda Woit}}), who was a collaborator with him until his death and whose contributions he acknowledged in his Nobel Prize acceptance.{{sfn|Ogilvie|Harvey|2000|p=1223}} Further evidence to support his polymer hypothesis emerged in the 1930s. High molecular weights of polymers were confirmed by [[osmotic pressure|membrane osmometry]], 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|Carothers]] demonstrated that polymers such as [[nylon]] and [[polyester]] could be prepared by well-understood organic reactions. His theory opened up the subject to further development, and helped place polymer science on a sound basis.
 
==উত্তরাধিকার==
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.<ref name="ref6">{{cite journal | author = Staudinger, H. | journal = [[Trans. Faraday Soc.]] | year = 1933 | volume = 29 | pages = 18–32 | doi = 10.1039/tf9332900018 | title = Viscosity investigations for the examination of the constitution of natural products of high molecular weight and of rubber and cellulose | issue = 140}}</ref> Staudinger himself saw the potential for this science long before it was fully realized. "It is not improbable," Staudinger 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."<ref name="ref7">{{cite journal | author = Staudinger, H. | journal = [[Trans. Faraday Soc.]] | year = 1936 | volume = 32 | pages = 323–335 | doi = 10.1039/tf9363200323 | title = The insoluble polystyrene | last2 = Heuer | first2 = W. | last3 = Husemann | first3 = E. | last4 = Rabinovitch | first4 = I. J.}}</ref> Staudinger founded the first polymer chemistry journal in 1940,<ref name="ref8">{{cite journal |author1=Meisel, I. |author2=Mülhaupt, R. | journal = [[Macromolecular Chemistry and Physics]] |doi =10.1002/macp.200290078 | title = The 60th Anniversary of the First Polymer Journal ("Die Makromolekulare Chemie"): Moving to New Horizons | year = 2003 | volume = 204 | pages = 199 | issue = 2}}
</ref> and in 1953 received the [[Nobel Prize in Chemistry]] for "his discoveries in the field of macromolecular chemistry."<ref name="ref9">[http://nobelprize.org/chemistry/laureates/1953/index.html The Nobel Prize in Chemistry 1953] (accessed Mar 2006).</ref> In 1999, the [[American Chemical Society]] and [[Gesellschaft Deutscher Chemiker]] designated Staudinger's work as an [[National Historic Chemical Landmarks|International Historic Chemical Landmark]].<ref name="Landmark">{{cite web |url = https://www.acs.org/content/acs/en/education/whatischemistry/landmarks/staudingerpolymerscience.html |title = Hermann Staudinger and the Foundation of Polymer Science |publisher = American Chemical Society |work = International Historic Chemical Landmarks |accessdate = August 21, 2018 }}</ref> His pioneering research has afforded the world myriad plastics, textiles, and other polymeric materials which make consumer products more affordable, attractive and fun, while helping engineers develop lighter and more durable structures.
 
== মন্তব্য==