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Renewable Materials

Notes

From 09/23/2014 through 8/10/2012

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1. “A renewable resource is a natural resource which can replenish with the passage of time, either through biological reproduction or other naturally recurring processes. Renewable resources are a part of Earth's natural environment and the largest components of its ecosphere. A positive life cycle assessment is a key indicator of a resource's sustainability. In 1962, Paul Alfred Weiss defined Renewable Resources as: "The total range of living organisms providing man with food, fibers, drugs, etc...".[1]

Renewable resources may be the source of power for renewable energy. However, if the rate at which the renewable resource is consumed exceeds its renewal rate, renewal and sustainability will not be ensured.

The term renewable resource also describes systems like sustainable agriculture and water resources.[2] Sustainable harvesting of renewable resources (i.e., maintaining a positive renewal rate) can reduce air pollution, soil contamination, habitat destruction and land degradation.[3]

Gasoline, coal, natural gas, diesel and other commodities derived from fossil fuels, as well as minerals like copper and others, are non-renewable resources without a sustainable yield.”

(Renewable Resources. Wikipedia, 2/25/2013)

2. Epoxidized vegetable oils have been used in small proportions as secondary plasticizers and thermo-costabilizers in the production of flexible, semi-rigid and rigid polyvinyl chloride (PVC) materials. However, the use of epoxidized triglycerides as primary plasticizers results in exudation due to limited compatibility with the polymeric matrix.  Cordeiro et al developed compatible plasticizers for vinyl polymers by transesterification of vegetable oils and alcohols catalyzed by an alcoxide generated by the reaction of an alcohol with an alkaline metal.

US Patent 8,802,877 (August 12, 2014), “Process for Modifying Vegetable Oils and Primary Plasticizer for Vinyl Polymers,” Milton Sobrosa Cordeiro, Sergio Teixeira, and Ariovaldo Fernandes Junior (NPC Industrias Quimicas Ltda., Mogi das Cruzes, Brazil).

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Notes

“A renewable resource is a natural resource with the ability to reproduce through biological or natural processes and replenished with the passage of time. Renewable resources are part of our natural environment and form our eco-system.

In 1962, within a report to the committee on natural resources which was forwarded to the President of the United States, Paul Weiss defined Renewable Resources as: "The total range of living organisms providing man with food, fibers, drugs, etc...".[1]

Renewable resources are endangered by industrial developments and growth. They must be carefully managed to avoid exceeding the natural world's capacity to replenish them. A life cycle assessment provides a systematic means of evaluating renewability. This is a matter of sustainability in the natural environment.

Solar radiation, tides, winds, geothermal, biomass and other natural elements are renewable resources of energy now called renewable energies.

Gasoline, coal, natural gas, diesel and other commodities derived from fossil fuels, as well as minerals like copper and others, are non-renewable resources without a sustainable yield.”

(Wikipedia, Renewable Materials, 6/10/2012)

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Interested!!
Bookmark this page to follow future developments!.
(RDC 6/5/2012)

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Roger D. Corneliussen
Editor
www.maropolymeronline.com

Maro Polymer Links
Tel: 610 363 9920
Fax: 610 363 9921
E-Mail: cornelrd@bee.net  

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Copyright 2012 by Roger D. Corneliussen.
No part of this transmission is to be duplicated in any manner or forwarded by electronic mail without the express written permission of Roger D. Corneliussen
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* Date of latest addition; date of first entry is 8/10/2012.