Novel Heat Stable Polylactic Acid And Its Composite For High Temperature Applications
Project Description :
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The heat stable stereocomplex polylactic acid (spla) is a biodegradable polymer which can be synthesized from its precursor, either lactide or lactic acid, which is derived from the renewable resources such as com, sweet potato or other resources containing glucose. the properties of spla is highly dependent on the purity (optical as well as chemical purity) of the precursor, lactide. the lactide is produced by two step process i.e. oligomerization followed by depolymerization. we have developed the process to produce purified pla precursor (lactide) as well as stereocomplex placomposite. the melting temperature of the produced end product is more than 200°c and heat deflection temperature is more than' 140°c compared to ~70°c in case of pristine pla. the developed product application is very broad and can be used by common people of india. it can be used to make carry bag, toys, 3d printed tools, biodegradable clothing, photovoltaic, food packaging, drug delivery, engineering application, etc. developing the biodegradable plastics such as pla and its stereocomplex pla is the solution to possibly replace enormous plastic waste generated in the country. we have developed the process for the production of lactide and its purification as well as development of stereocomplex plaproduction. we can produce plain our laboratory is around ~200 gms of the pla. however, higher scale production of spla, is only required the reactor facility of higher batch size. this, produced pla, can be used for the commodity application as well as engineering application.
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Date :30-12-2016
According to the CPCB, India, approximately five million ton of consumed plastic per annum is discarded as waste in India. It is enough amount to causing severe environmental problems. To solve this problem, now we have made biodegradable plastic based indigenous technology for variable applications which includes for high-temperature applications upto 140°C. India, as a developing country and fast growing economy, should have indigenous technology for the development of biodegradable PLA. The global pressure to reduce carbon foot print is also drive us to produce the bio- based plastics. In context of India, it is very important to be independent to the foreign technology and as well as the rising price and limited availability of fossil fuels. It is a golden opportunity to commercialize the production of PLA in large scale with our own technology. Plastic carry bags are ban in some of the cities in India but banning will not serve the purpose, giving the alternative to the people in the form of biodegradable plastic will be a huge impact for the society. Our process is able to produce PLA monomer and Heat stable sPLA (up to 140°C) with high melting temperature more than 200°C.
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