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Paul J. Flory
Paul John Flory (June 19, 1910 – September 9, 1985) was an American chemist and Nobel laureate who was known for his work in the field of polymers, or macromolecules. He was a leading pioneer in understanding the behavior of polymers in solution, and won the Nobel Prize in Chemistry in 1974 "for his fundamental achievements, both theoretical and experimental, in the physical chemistry of macromolecules". Biography Personal life Flory was born in Sterling, Illinois, on June 19, 1910. He was raised by Ezra Flory and Nee Martha Brumbaugh. His father worked as a clergyman-educator, and his mother was a school teacher. He first gained his interest in science from Carl W Holl, who was a professor in chemistry. Holl was employed in Indiana at Manchester College as a chemistry professor. In 1936, he married Emily Catherine Tabor. He and Emily had three children together; Susan Springer, Melinda Groom and Paul John Flory jr. They also had five grandchildren. All of his children purs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sterling, Illinois
Sterling is a city in Whiteside County, Illinois, United States. The population was 14,782 at the 2020 census, down from 15,370 in 2010. Formerly nicknamed "Hardware Capital of the World", the city has long been associated with manufacturing and the steel industry. Geography Sterling lies along the north bank of the Rock River, opposite its twin city, Rock Falls. The terrain is mostly flat. The land immediately outside of town is almost entirely farmland. The prairie soil is part of one of the world's most fertile growing areas. According to the 2010 census, Sterling has a total area of , of which (or 96.08%) is land and (or 3.92%) is water. Demographics As of the census of 2000, there were 15,596 people, 6,234 households, and 3,946 families residing in the city. The population density was . There were 6,596 housing units at an average density of . The racial makeup of the city was 84.36% White, 2.25% African American, 0.41% Native American, 0.81% Asian, 0.01% Pacific ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Flory–Rehner Equation
In polymer science Flory–Rehner equation is an equation that describes the mixing of polymer and liquid molecules as predicted by the equilibrium swelling theory of Flory and Rehner. It describes the equilibrium swelling of a lightly crosslinked polymer in terms of crosslink density and the quality of the solvent. The Flory–Rehner equation is written as: : -\left \ln+\nu_2+ \chi_1 \nu_2^2 \right= V_1 n \left(\nu_2^\frac-\frac\right) where, \nu_2 is the volume fraction of polymer in the swollen mass, V_1 the molar volume of the solvent, n is the number of network chain segments bounded on both ends by crosslinks, and \chi_1 is the Flory solvent-polymer interaction term. In its full form, the Flory–Rehner equation is written as: : -\left \ln+\nu_2+ \chi_1 \nu_2^2 \right= \frac \left(1-\frac\right) \left(\nu_2^\frac-\frac\right) where, \bar is the specific volume of the polymer, M is the primary molecular mass, and M_c is the average molecular mass between crosslinks or t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Goodyear Medal
The Charles Goodyear Medal is the highest honor conferred by the American Chemical Society, Rubber Division. Established in 1941, the award is named after Charles Goodyear, the discoverer of vulcanization, and consists of a gold medal, a framed certificate and prize money. The medal honors individuals for "outstanding invention, innovation, or development which has resulted in a significant change or contribution to the nature of the rubber industry". Awardees give a lecture at an ACS Rubber Division meeting, and publish a review of their work in the society's scientific journal '' Rubber Chemistry and Technology''. Recipients Source: * 1941 David Spence – Diamond Rubber Co. researcher noted for synthesizing isoprene for use in synthetic rubber * 1942 Lorin B. Sebrell – Goodyear Research Director noted for his work on organic accelerators for vulcanization * 1944 Waldo L. Semon – early developer of synthetic rubber, in particular Ameripol for B. F. Goodrich * 1946 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Peter Debye Award
The Peter Debye Award in Physical Chemistry is awarded annually by the American Chemical Society "to encourage and reward outstanding research in physical chemistry". The award is named after Peter Debye and granted without regard to age or nationality. Recipients *2020 Laura Gagliardi *2019 Daniel M. Neumark *2018 *2017 *2016 Mark A. Ratner *2015 Xiaoliang Sunney Xie *2014 Henry F. Schaefer III *2013 William E. Moerner *2012 David Chandler *2011 Louis E. Brus *2010 George Schatz *2009 Richard J. Saykally *2008 Michael L. Klein *2007 John T. Yates, Jr. *2006 Donald Truhlar *2005 Stephen Leone *2004 William Carl Lineberger *2003 William H. Miller *2002 Giacinto Scoles *2001 John Ross *2000 Peter G. Wolynes *1999 Jesse L. Beauchamp *1998 Graham R. Fleming *1997 Robin M. Hochstrasser *1996 Ahmed Zewail *1995 John C. Tully *1994 William A. Klemperer *1993 F. Sherwood Rowland *1992 Frank H. Stillinger *1991 Richard N. Zare *1990 Harden M. McConnell *1989 Ga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elliott Cresson Medal
The Elliott Cresson Medal, also known as the Elliott Cresson Gold Medal, was the highest award given by the Franklin Institute. The award was established by Elliott Cresson, life member of the Franklin Institute, with $1,000 granted in 1848. The endowed award was to be "for some discovery in the Arts and Sciences, or for the invention or improvement of some useful machine, or for some new process or combination of materials in manufactures, or for ingenuity skill or perfection in workmanship." The medal was first awarded in 1875, 21 years after Cresson's death. The Franklin Institute continued awarding the medal on an occasional basis until 1998 when they reorganized their endowed awards under one umbrella, The Benjamin Franklin Awards. A total of 268 Elliott Cresson Medals were given out during the award's lifetime. See also * List of engineering awards * List of physics awards This list of physics awards is an index to articles about notable awards for physics. The lis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Science History Institute
The Science History Institute is an institution that preserves and promotes understanding of the history of science. Located in Philadelphia, Pennsylvania, it includes a library, museum, archive, research center and conference center. It was founded in 1982 as a joint venture of the American Chemical Society and the University of Pennsylvania, as the Center for the History of Chemistry (CHOC). The American Institute of Chemical Engineers (AIChE) became a co-founder in 1984. It was renamed the Chemical Heritage Foundation (CHF) in 1992, and moved two years later to the institution's current location, 315 Chestnut Street in Old City. On December 1, 2015, CHF merged with the Life Sciences Foundation, creating an organization that covers "the history of the life sciences and biotechnology together with the history of the chemical sciences and engineering." As of February 1, 2018, the organization was renamed the Science History Institute, to reflect its wider range of historical i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Perkin Medal
The Perkin Medal is an award given annually by the Society of Chemical Industry (American Section) to a scientist residing in America for an "innovation in applied chemistry resulting in outstanding commercial development." It is considered the highest honor given in the US chemical industry. The Perkin Medal was first awarded in 1906 to commemorate the 50th anniversary of the discovery of mauveine, the world's first synthetic aniline dye, by Sir William Henry Perkin, an English chemist. The award was given to Sir William on the occasion of his visit to the United States in the year before he died. It was next given in 1908 and has been given every year since then. Recipients See also * List of chemistry awards This list of chemistry awards is an index to articles about notable awards for chemistry. It includes awards by the Royal Society of Chemistry, the American Chemical Society, the Society of Chemical Industry and awards by other organizations. ... References { ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Priestley Medal
The Priestley Medal is the highest honor conferred by the American Chemical Society (ACS) and is awarded for distinguished service in the field of chemistry. Established in 1922, the award is named after Joseph Priestley, the discoverer of oxygen who immigrated to the United States of America in 1794. The ACS formed in 1876, spearheaded by a group of chemists who had met two years previously in Priestley's home. The Priestley Medal is commonly awarded to scientists who are advanced in their fields, as it is intended to commemorate lifetime achievement. When the ACS started presenting the Priestley Medal in 1923, they intended to award it every three years. This continued until 1944, when it became an annual award. Recipients ;1920s * 1923 Ira Remsen * 1926 Edgar Fahs Smith * 1929 Francis P. Garvan ;1930s * 1932 Charles L. Parsons * 1935 William A. Noyes * 1938 Marston T. Bogert ;1940s * 1941 Thomas Midgley, Jr. * 1944 James Bryant Conant * 1945 Ian Heilbron * 1946 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Medal Of Science
The National Medal of Science is an honor bestowed by the President of the United States to individuals in science and engineering who have made important contributions to the advancement of knowledge in the fields of behavioral and social sciences, biology, chemistry, engineering, mathematics and physics. The twelve member presidential Committee on the National Medal of Science is responsible for selecting award recipients and is administered by the National Science Foundation (NSF). History The National Medal of Science was established on August 25, 1959, by an act of the Congress of the United States under . The medal was originally to honor scientists in the fields of the "physical, biological, mathematical, or engineering sciences". The Committee on the National Medal of Science was established on August 23, 1961, by executive order 10961 of President John F. Kennedy. On January 7, 1979, the American Association for the Advancement of Science (AAAS) passed a resolution prop ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nobel Prize For Chemistry
) , image = Nobel Prize.png , alt = A golden medallion with an embossed image of a bearded man facing left in profile. To the left of the man is the text "ALFR•" then "NOBEL", and on the right, the text (smaller) "NAT•" then "MDCCCXXXIII" above, followed by (smaller) "OB•" then "MDCCCXCVI" below. , awarded_for = Outstanding contributions in chemistry , presenter = Royal Swedish Academy of Sciences , location = Stockholm, Sweden , reward = 9 million SEK (2017) , year = 1901 , holder = Carolyn R. Bertozzi, Morten P. Meldal and Karl Barry Sharpless (2022) , most_awards = Frederick Sanger and Karl Barry Sharpless (2) , website nobelprize.org, previous = 2021 , year2=2022, main= 2022, next= 2023 The Nobel Prize in Chemistry is awarded annually by the Royal Swedish Academy of Sciences to scientists in the various fields of chemistry. It is one of the five Nobel Prizes established by the will of Alfred Nobel in 1895, awarded ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Self-avoiding Walk
In mathematics, a self-avoiding walk (SAW) is a sequence of moves on a lattice (a lattice path) that does not visit the same point more than once. This is a special case of the graph theoretical notion of a path. A self-avoiding polygon (SAP) is a closed self-avoiding walk on a lattice. Very little is known rigorously about the self-avoiding walk from a mathematical perspective, although physicists have provided numerous conjectures that are believed to be true and are strongly supported by numerical simulations. In computational physics, a self-avoiding walk is a chain-like path in or with a certain number of nodes, typically a fixed step length and has the property that it doesn't cross itself or another walk. A system of SAWs satisfies the so-called excluded volume condition. In higher dimensions, the SAW is believed to behave much like the ordinary random walk. SAWs and SAPs play a central role in the modeling of the topological and knot-theoretic behavior of thread- a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Star-shaped Polymer
Star-shaped polymers are the simplest class of branched polymers with a general structure consisting of several (at least three) linear chains connected to a central core. The core, or the center, of the polymer can be an atom, molecule, or macromolecule; the chains, or "arms", consist of variable-length organic chains. Star-shaped polymers in which the arms are all equivalent in length and structure are considered homogeneous, and ones with variable lengths and structures are considered heterogeneous. Star-shaped polymers' unique shape and associated properties, such as their compact structure, high arm density, efficient synthetic routes, and unique rheological properties make them promising tools for use in drug delivery, other biomedical applications, thermoplastics, and nanoelectronicsDrew C. Forman ; Florian Wieberger ; Andre Gröschel ; Axel H. E. Müller ; Hans-Werner Schmidt ; Christopher K. Ober; Comparison of star and linear ArF resists. Proc. SPIE 7639, Advances in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
