Polymer Technology Polyvinyl chloride (PVC) Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods Can be made thermosetting by adding a plasticiser Softening temperature is 200°C Is produced by polycondensation reaction Uses either emulsion or suspension polymerisation methods ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Thermosetting resins/polymers as compared to thermoplastic ones are Formed by addition polymerisation only Soluble in all organic solvents More brittle Easily reshaped & reused Formed by addition polymerisation only Soluble in all organic solvents More brittle Easily reshaped & reused ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Styrene which is a monomer for the production of polystyrene, is commercially produced by the Reacting ethylene oxide with acetal-dehyde Catalytic dehydrogenation of ethyl benzene Dehydration of ethyl alcohol followed by hydrogenation Fermentation of starch Reacting ethylene oxide with acetal-dehyde Catalytic dehydrogenation of ethyl benzene Dehydration of ethyl alcohol followed by hydrogenation Fermentation of starch ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Most commonly used rubber vulcanisation agent is Sulphur Platinum Bromine Alumina Sulphur Platinum Bromine Alumina ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Valcunisation of rubber decreases its Tensile strength Resistance to organic solvents Working temperature range Tackiness Tensile strength Resistance to organic solvents Working temperature range Tackiness ANSWER DOWNLOAD EXAMIANS APP
Polymer Technology Polythene is a/an None of these Condensation polymerisation product Addition polymerisation product Thermosetting material None of these Condensation polymerisation product Addition polymerisation product Thermosetting material ANSWER DOWNLOAD EXAMIANS APP
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