HOME >> MEDICINE >> NEWS
Arizona pioneer in plastics wins top chemistry award

company to become the first and later its largest producer. The trick is in its construction: the stringing together of individual units of propylene, a three-carbon molecule derived from petroleum. Two of the carbons link up with those of other units to form a chain, while the third of each unit juts up above or below.

If the third carbon is randomly placed on either side of the chain, the resulting polypropylene is soft and rubbery. Vandenberg discovered construction methods that always place the third carbon on the same side. With one side of the chain bulkier than the other, isotactic polypropylene bends into uniform coils that can pack together. The result is a polypropylene form with the same chemical formula as the randomly placed carbons but with dramatically different properties. Its crystalline structure does not melt in boiling water; it has the ability to form stiff, sturdy fibers; and it has a resistance to solvents and other chemicals.

To compel the third carbons to consistently stay in the same position, Vandenberg designed a variety of catalysts, the exquisitely orchestrated construction workers of chemistry. Over succeeding decades he refined that knowledge with new discoveries. Among them were ways to control the length and branching of polymer chains, as well as what is now the most common route to make phenol, a chemical used to make products as diverse as plywood, automotive components, epoxy resins and disinfectants.

Vandenberg grew up in the years between World War I and II in Hawthorne, N.J., where his father owned a feed store. As a boy he was intrigued by the violin as well as chemistry, studying music in school while running experiments of his own in a home laboratory.

After retiring from Hercules in 1982 Vandenberg joined the faculty of Arizona State University. In the last dozen years his research achievements have taken a new turn: polymers that have biomedical applications, particularly for implants, a
'"/>

Contact: Allison Byrum
a_byrum@acs.org
202-872-4400
American Chemical Society
6-Mar-2003


Page: 1 2 3

Related medicine news :

1. Olson family donates $1 million to Arizona Cancer Center
2. AIUM to host 2004 annual convention June 19-22, in Phoenix, Arizona
3. Arizona researchers receive award for antibacterial, foaming hand wash
4. Rice scientist recognized as pioneer in tissue engineering
5. Spinal repair pioneer to speak in NY on 20th Jan
6. New Jersey Institute of Technology pioneers new way to teach engineers
7. ISHLT to recognize transplant pioneer Dr. Magdi Yacoub with lifetime achievement award
8. Visionaries who pioneered modern cataract surgery to present at AAOs Annual Meeting
9. First human tests under way of HIV vaccine pioneered at UNC
10. Dartmouth researcher Michael B. Sporn, M.D. honored for pioneering work in cancer prevention
11. Lawrence Livermore Lab pioneers advanced radiation treatment for cancer

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:8/31/2020)... ... August 31, 2020 , ... ... N95 face masks to medical first responders across the United States. Since the ... of personal protective equipment (PPE) medical centers , hospitals , ...
(Date:8/31/2020)... ... August 31, 2020 , ... Genesis ... chiropractors, announced today the launch of its integrated, HIPAA compliant, telehealth solution, available ... virtual practice in under 90 seconds. , According to the U.S. Department ...
(Date:8/31/2020)... , ... August 31, 2020 , ... ... support services to dental groups in the United States, today announced the grand ... of Beaumont, CA. , Patients will enjoy convenient hours, a comfortable office, ...
(Date:8/31/2020)... ... August 31, 2020 , ... A Cure for Covid-19 “PTS” with Mediation & Hypnosis ... are in a state of panic, experiencing deep anxiety, immense stress, and right now are ... is timely when most people on the planet are experiencing a great degree of emotional ...
(Date:8/31/2020)... ... 31, 2020 , ... Dr. Chang has over 20 years ... other developmental disabilities, as well as supporting staff in caring for patients and ... consultation, and staff development. She joined the company in 2015 as Chief of ...
Breaking Medicine News(10 mins):
(Date:8/27/2020)... ... August 27, 2020 , ... The GHT Companies , ... fundraising initiative for Feeding San Diego with a press conference at its ... presents the final check of $5,000.00+ representing an overall donation result exceeding $30,000 to ...
(Date:8/26/2020)... ... August 26, 2020 , ... ... Testing division, expands its technology footprint with the addition of Novocyte Quanteon™ ... With industry-leading biomarker solutions, complemented with traditional ligand-binding assays and study management ...
(Date:8/26/2020)... ... ... As the U.S. struggles in its 6th month of fighting Covid-19, Americans are ... keep your distance, wash your hands. Prevention is the best tool for now. Noted ... much better it is to prevent disease than to cure it.” , Part of ...
Breaking Medicine Technology:
Cached News: