A greener, more sustainable source of ingredients for widely used plastics

August 7, 2013
A greener, more sustainable source of ingredients for widely used plastics

A new process can convert a wide variety of vegetable and animal fats and oils—ranging from lard to waste cooking oil—into a key ingredient for making plastics that currently comes from petroleum, scientists say. Their report on the first-of-its-kind process appears in the journal ACS Sustainable Chemistry & Engineering.

Douglas Neckers and Maria Muro-Small explain that many of the plastics found in hundreds of everyday products begin with a group of chemical raw materials termed olefins that come from petroleum. They include ethylene, propylene and butadiene, which are building blocks for familiar plastics like polyethylene, polyester, polyvinyl chloride and polystyrene. The scientists sought a more sustainable alternative source of olefins.

Their report describes use of "UV-C" light—used in sanitizing wands to kill bacteria and viruses around the house—to change lard, tallow, olive oil, canola oil and waste canola into olefins. Neckers and Muro-Small say that this is the first report on use of this photochemical process to make olefins.

Explore further: Progress in using ethanol to make key raw material now produced from oil

More information: "A Green Route to Petroleum Feedstocks: Photochemistry of Fats and Oils" ACS Sustainable Chem. Eng., Article ASAP DOI: 10.1021/sc400135y

Abstract
We demonstrate that it is possible to generate long chain olefins from different fat sources, i.e., animal fat, vegetable oils/fats, and waste cooking oil. Our results show that, independent of the source of fat, irradiation using UV–C light produces 1-tetradecene, 1-hexadecene, 1,7-hexadecadiene, and 1,7,10-hexadecatriene. Fats undergo transesterification with primary alcohols rendering the corresponding esters. These, following irradiation, produce the olefins described, in addition to lower molecular weight esters.

Related Stories

Recommended for you

Scientific advances can make it easier to recycle plastics

November 17, 2017

Most of the 150 million tons of plastics produced around the world every year end up in landfills, the oceans and elsewhere. Less than 9 percent of plastics are recycled in the United States, rising to about 30 percent in ...

The spliceosome—now available in high definition

November 17, 2017

UCLA researchers have solved the high-resolution structure of a massive cellular machine, the spliceosome, filling the last major gap in our understanding of the RNA splicing process that was previously unclear.

Ionic 'solar cell' could provide on-demand water desalination

November 15, 2017

Modern solar cells, which use energy from light to generate electrons and holes that are then transported out of semiconducting materials and into external circuits for human use, have existed in one form or another for over ...

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.