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Rev7 Gum was a
chewing Chewing or mastication is the process by which food is crushed and ground by the teeth. It is the first step in the process of digestion, allowing a greater surface area for digestive enzymes to break down the foods. During the mastication proc ...
gum, which after chewing is to some extent removable and biodegradable. The idea behind the gum's composition was developed by Professor Terence Cosgrove at the
University of Bristol The University of Bristol is a public university, public research university in Bristol, England. It received its royal charter in 1909, although it can trace its roots to a Merchant Venturers' school founded in 1595 and University College, Br ...
and it was developed by the British company Revolymer. Rev7 is designed to be a low adhesive gum that, unlike conventional gum, can be easily removed from a variety of surfaces, and which degrades and disperses over a short time-scale when in contact with water.


Composition

Conventional chewing gums use poly(styrene-co-butadiene) or poly(ethylene-co-vinylacetate). In contrast, Rev7 Gum contains an amphiphilic material, containing both hydrophobic (water repellent) and hydrophilic (water attracting) regions, which aids in the degradability and removability of the substance. It is composed of a polyisoprene backbone and grafts of poly(ethylene oxide) (PEO) and has a CAS number of 1246080-53-4.


Development

The polymer was developed at the University of Bristol in an effort to curb pollution issues, due to regular chewing gum, which are prevalent in the United Kingdom. Britain spends over £150 million annually (as of 2008) on gum cleanup efforts, using techniques such as high pressure steam hoses, corrosive materials, and freezing machines to help remove this synthetic material from sidewalks and other public spaces. Its name is derived from the word "revolution" (Rev), and the number of attempts it took to achieve the degradable gum (7). Rev7 has two flavours: Natural Peppermint and Natural Spearmint.


Availability


United Kingdom

Rev7 launched in Spring 2012.


United States

Rev7 was on the US market from 4 October 2010 to December 2012, when it was withdrawn due to low sales. It was available at multiple retailers, including
7-Eleven 7-Eleven, Inc. is an American convenience store chain, headquartered in Irving, Texas. It is a wholly owned subsidiary of Seven-Eleven Japan, which in turn is owned by the retail holdings company Seven & I Holdings. The chain was founde ...
, Huck's Market,
Mobil Mobil Oil Corporation, now known as just Mobil, is a petroleum brand owned and operated by American oil and gas corporation ExxonMobil, formerly known as Exxon, which took its current name after history of ExxonMobil#merger, it and Mobil merge ...
, BP and Weigel's, as well as Rev 7's online store.


References

{{Reflist Chewing gum British brands