bio-degradable,biodegrade hard plastics items list - all from starch made
biodegradable plastics water bottle
Before we go into the subject of biodegradable plastics , we must know something about plastics. Day today life, we use plastics in number ways. Starting from toys to medical equipment and other areas. So, plastics are inseparable from modern life.
Generally this question will arise,what is plastic? Plastic is a synthetic , man made polymer. Repetition of monomers ( same chemical compound or two different chemical compounds) forms big chain orderly or branched make this polymer. Alexander parkes , the first person who made the plastic called celluloid made out of cellulose at 1862. And the modern day plastic made by Hendrik Baekland in 1907 and he coined the word plastic. The Baeklite plastic which made used as electrical insulator , because of its properties.
Plastics are regarded for its durability and low cost . The plastics are made ,using petroleum products which depleting nowadays. And plastics are not decomposable by micro-organisms, thus make the environment pollution.
Bio degradable plastics are answer for the above said problems with plastics. Bio degradable plastics are made out of renewable , sustainable, eco friendly materials. As we know polymer are not only synthetic made, naturally available also. One of the naturally available polymer is starch. This starch is abundance in cereal plant and tuber's. Due to high solubility in water and swelling properties of starch it can't be used as plastics as such. This can be modified to use as bio degradable plastics.
Corn, wheat and potatoes can be used for making bio degradable plastics. All this naturally available and renewable materials are subject to micro organisms attack in order to get lactic acid.This lactic acid is chemically treated to make polylactide -PLA . This PLA is the one used as bio-degradable plastics.Even it is called as corn plastics. This type of plastics can be decomposed within 100 days. Using PLA , drug delivery systems, nappies, sutures , and even plant pots are made.Apart from this hot cups , cold cups and trash bags and cutlery are made. Only to withstand the heat inner linings are made using petroleum products.
Besides, bagasse are used for making cups and other eco - friendly items.