They include: -Health concerns. Which is non biodegradable? Bakelite's molding process had a number of advantages. This is partly because the biodegradability of any given substance, depends on the environment it is left to biodegrade in. The polymers which decompose on their own by bacterial action are called biodegradable polymers.Example of a biodegradable aliphatic polyester are Poly-β-hydroxy butyrate-co-β-hydroxy valerate (PHBV). For example, PE, a non-polar plastic, absorbs non-polar hydrocarbons readily, but hydrocarbons are not corrosive. Synthetic Plastics Bakelite Phenolic Resin Powder Cas No 9003 35 4 Narrow Molecular Weight Distribution. a..Bakelite and b. Nylon- 6,6. Melamine is resistant to fire and is hence used for making utensils. We believe that by being responsible and utilising existing technology appropriately, we can find solutions to our pollution problems, benefit from clean energy and protect natural environments, so that we all have the opportunity to live and thrive on this fine planet. From a consumer perspective, it is very difficult to know exactly which epoxy resins, plastics and other chemicals have been used in the bamboo plastic composite manufacturing process. Polyacrylonitrile is an example of (a) addition polymer (b) condensation polymer (c) natural polymer (d) None of these. Like many things that are essential to human bodily function, such as salts for example, a small amount is essential, however too much can be very harmful. Check Answer a Bioplastic made from plant feedstock is not biodegradable. Thermoset plastics are frequently used for sealed products due to their resistance to deformation and are also among some of the most impact resistant plastics available. PET is the acronym for _____ (a) Polyester (b) Polyester and terylene (c) Polyethylene terephthalate (d) Polyetheneterylene Answer: (c) Polyethylene terephthalate. 40 Qs . B. Terylene. For example, Bakelite jewelry is more rare than, say, dishes or cookware. In one particular example, a study published in the International Biodeterioration & Biodegradation journal, appears to have shown signs that micro organisms were breaking down an epoxy in a test environment, where oxygen was available. Examples of thermosetting plastics include bakelite, urea-formaldehyde resins. Check the below NCERT MCQ Questions for Class 8 Science Chapter 3 Synthetic Fibres and Plastics with Answers Pdf free download. Answer: (b) Cellulose. It is used in speciality packing, orthopaedic devices and in controlled release of drugs. )Write the names and structures of monomers of the following polymers? To add some context, the idea of combining epoxy resin with a filler is not new. Write the structure of this polymer. Which of the following characteristics does not affect the properties of plastics? A familiar example of a condensation polymer is nylon, which is obtained from the reaction of two monomers. Students can practice free MCQs as have been added by CBSE in the new Exam pattern. Chemistry MCQs for Class 12 Chapter Wise with Answers PDF Download was Prepared Based on Latest Exam Pattern. -Some epoxy resins / plastics are considered biodegradable i.e. Bakelite and melamine are examples of thermosetting plastic. These composites are often made from an epoxy resin mixed with bamboo fibre dust, with the bamboo acting as the fibrous filler. So in conclusion, yes you will have to weigh the pros and cons and ultimately make up your own mind on a case by case basis with this one! For example: Bakelite and melamine. Biodegradability. 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