The purpose of the project is to prepare acetylated starches/starch esters of different Degree of Substitution using different concentrations of acetic anhydride for modifying the native starch. The testing of samples is done by testing various properties of the obtained samples such as Degree of Substitution, Solubility, Swelling Power, Light Transmittance and Water Binding Capacity.
INDEX
1. Introduction ………………………………………………………7 2. Literature Survey………………………………………………….9 3. Biodegradation…………………………………………………..14 4. Biopolymers……………………………………………………..21 5. Starch…………………………………………………………….24 6. Physiochemical Properties of Modified Starch………………….28 7. Experiment………………………………………………………35 8. Results…………………………………………………………...40 9. Discussion……………………………………………………….42 10. Conclusion……………………………………………………….47 11. Future Scenario of Biodegradable Polymers…………………….48 12. References……………………………………………………….49. Chapter 1 INTRODUCTION
Plastic is the general term for a wide range of synthetic or semi-synthetic polymerization products. They are composed of organic condensation or addition polymers and may contain other substances to improve performance or economics. There are many natural polymers generally considered to be "plastics". Plastics can be formed into objects or films or fibers. Their name