PL6003 - BIODEGREDABLE POLYMERS (Syllabus) 2013-regulation Anna University

PL6003 - BIODEGREDABLE POLYMERS (Syllabus) 2013-regulation Anna University

PL6003	BIODEGREDABLE POLYMERS	LPTC

3003

OBJECTIVES:

To enable the students to understand the method of development of biodegradable polymers; the need of biodegradable and testing methods used for analyzing the biodegradability

UNIT I	CHEMISTRY AND BIOCHEMISTRY OF POLYMER DEGRADATION	9

Introduction, enzymes - enzyme nomenclature - enzyme specificity - physical factors affecting the activity of enzymes - enzyme mechanism, Chemical degradation initiates biodegradation, Hydrolysis of synthetic biodegradable polymers.

UNIT II	PARTICULATE STARCH BASED PRODUCTS	9

Development of Technology, Current objectives, relative starch technology, Manufacture of master batch, Conversion technology - processing precautions - moisture and temperature - rheological considerations, cyclic conversion process, physical properties of products - sample preparation - physical testing methods - test results, Quality control testing of degradation - auto oxidation measurement - biodegradation assessment - soil burial test.

UNIT III	BIOPOLYESTERS	9

Introduction, History, biosynthesis, Isolation - solvent extraction - sodium hypo chloride digestion, enzymatic digestion, Properties - crystal structure - nascent morphology, degradation - Intracellular biodegradation - extra cellular biodegradation - thermal degradation - hydrolytic degradation - environmental degradation - effects of recycling, applications, economics, future prospects.

UNIT IV	RECYCLING TECHNOLOGY FOR BIODEGRADABLE PLASTICS	9

Introduction, conventional recycling - economic incentive - recycling problems, degradable complicate recycling - polyethylene/starch film, reprocessing polyethylene/corn starch film scrap - learning to reprocess PE/S - Calcium oxide moisture scavenger - temperature control - accounting for pro-oxidant - handling PE/S repro - economics of in-plant recycling, Using PE/S repro - comparative study of PE/S repro on film properties, recycling other degradables.

UNIT V	TEST METHODS & STANDARDS FOR BIODEGRADABLE PLASTICS	9

Introduction, defining biodegradability, criteria used in the evaluation of biodegradable polymers, tiered systems for evaluating biodegradability, choice of environment, choosing the most appropriate methodology, description of current test methods - screening test for ready biodegradability, tests for inherent biodegradability, tests for simulation studies, other methods for assessing biodegradability - petri dish screen - environmental chamber method - soil burial tests, Test method developments for the future.

TOTAL : 45 PERIODS

OUTCOMES: Upon completion of this course, the students

• Will familiarize about polymer degradation.
• Will develop the knowledge in mechanism of degradation
• Will acquire the skill in assessing bio-degradability of polymers

TEXT BOOKS:

1. G.J.L Griffin Blackie(ed.), Chemistry & Technology of Biodegradable Polymers Academic & Professional London 1994.
2. Yoshiharu Doi, Kazuhiko Fukuda (ed.) Biodegradable Plastics & Polymers Elsevier 1994.

REFERENCES

1. Abraham J.Donb & Others (ed.) Handbook of Biodegradable polymers.
2. Harvard Academic Publishers Australia 1997.