Featured Research

from universities, journals, and other organizations

New MIT Probe Gathers Data For Better Polymers

Date:
September 1, 1999
Source:
Massachusetts Institute Of Technology
Summary:
In work that could lead to superior varieties of nylon and other commercially important polymers, MIT engineers have developed the first probe that can detect the motion of molecules in these materials as they are being stretched.

CAMBRIDGE, Mass -- In work that could lead to superior varieties of nylon and other commercially important polymers, MIT engineers have developed the first probe that can detect the motion of molecules in these materials as they are being stretched.

"We want to understand on a molecular level what allows a polymer to stretch and deform," said Associate Professor Karen K. Gleason of the Department of Chemical Engineering, who will give a talk on the work August 25 at the national meeting of the American Chemical Society.

Understanding such molecular details "will allow us to design these materials from a fundamental viewpoint," Professor Gleason said, which could in turn improve their mechanical properties. Historically, polymeric materials with specific properties have been created by trial and error with little knowledge of exactly why a given formulation works.

The new probe combines a stretching device with the electronics for nuclear magnetic resonance (NMR) spectroscopy. NMR probes for exploring polymers, materials composed of chains of repeating subunits, are common. Until now, however, all focused on a given material before or after it was stretched, or put under stress. The MIT instrument is the first to detect what's happening during the process.

"We're trying to capture the motion of the polymer while it's actively being deformed," Professor Gleason said, "rather than looking at a 'dead' sample, or one in which deformation--and motions--have ceased."

The stretching device and polymer sample, inside a tube about 3 feet long by 3 inches in diameter, are placed within the NMR spectrometer's superconducting magnet. As the polymer is pulled, NMR captures its molecular motions. "These two techniques have been used individually to study polymers, but until now they haven't been used together," Professor Gleason said.

The researchers are currently using the probe to study man-made polymers like nylon. Professor Gleason noted, however, that it might have applications to different systems. For example, other researchers might want to look at active changes in biopolymers like cartilage.

Her colleagues in the work are Robert E. Cohen, the Raymond A. and Helen E. St. Laurent Professor of Chemical Engineering, and chemical engineering graduate student Leslie S. Loo. Professor Gleason noted that the research is part of an interdisciplinary research group at MIT on the rational design of polymeric materials that is led by Professor Mary Boyce of the Department of Mechanical Engineering.

The work is sponsored by the NSF through MIT's Center for Materials Science and Engineering.


Story Source:

The above story is based on materials provided by Massachusetts Institute Of Technology. Note: Materials may be edited for content and length.


Cite This Page:

Massachusetts Institute Of Technology. "New MIT Probe Gathers Data For Better Polymers." ScienceDaily. ScienceDaily, 1 September 1999. <www.sciencedaily.com/releases/1999/09/990901075928.htm>.
Massachusetts Institute Of Technology. (1999, September 1). New MIT Probe Gathers Data For Better Polymers. ScienceDaily. Retrieved July 23, 2014 from www.sciencedaily.com/releases/1999/09/990901075928.htm
Massachusetts Institute Of Technology. "New MIT Probe Gathers Data For Better Polymers." ScienceDaily. www.sciencedaily.com/releases/1999/09/990901075928.htm (accessed July 23, 2014).

Share This




More Matter & Energy News

Wednesday, July 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Government Approves East Coast Oil Exploration

Government Approves East Coast Oil Exploration

AP (July 18, 2014) The Obama administration approved the use of sonic cannons to discover deposits under the ocean floor by shooting sound waves 100 times louder than a jet engine through waters shared by endangered whales and turtles. (July 18) Video provided by AP
Powered by NewsLook.com
Sunken German U-Boat Clearly Visible For First Time

Sunken German U-Boat Clearly Visible For First Time

Newsy (July 18, 2014) The wreckage of the German submarine U-166 has become clearly visible for the first time since it was discovered in 2001. Video provided by Newsy
Powered by NewsLook.com
Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Obama: U.S. Must Have "smartest Airports, Best Power Grid"

Reuters - US Online Video (July 17, 2014) President Barak Obama stopped by at a lunch counter in Delaware before making remarks about boosting the nation's infrastructure. Mana Rabiee reports. Video provided by Reuters
Powered by NewsLook.com
Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

Crude Oil Prices Bounce Back After Falling Below $100 a Barrel

TheStreet (July 16, 2014) Oil Futures are bouncing back after tumbling below $100 a barrel for the first time since May yesterday. Jeff Grossman is the president of BRG Brokerage and trades at the NYMEX. Grossman tells TheStreet the Middle East is always a concern for oil traders. Oil prices were pushed down in recent weeks on Libya increasing its production. Supply disruptions in Iraq fading also contributed to prices falling. News from China's economic front showing a growth for the second quarter also calmed fears on its slowdown. Jeff Grossman talks to TheStreet's Susannah Lee on this and more on the Energy Department's Energy Information Administration (EIA) report. Video provided by TheStreet
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:
from the past week

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins