Polymer Synthesis and Characterization

Polymerization Reaction Equipment

PPI has a complete set up of reaction equipment as follows:
  • 1 and 2 liter reaction kettle
  • 3 and 4 necked flat kettle head
  • Heating mantle with thermostat for temperature control
  • Mechanical stirrer
  • Other accessories like condensers for reflux or distillation, corresponding standard joints, thermometers, addition funnels, flasks, etc.

Polymerization Types / Techniques:
  • Step-growth: Polycondensation (Unsaturated Polyesters, Phenolics (Resols, Novolacs))
  • Chain-growth: Free-radical (Polystyrene) Ionic (Polystyrene)
  • Emulsion Polymerization
  • Solution Polymerization
  • Bulk Polymerization
  • Photo-polymerization (UV curable polymeric binder systems)

Recently, PPI acquired All-in-One Benchtop Reactor, a general purpose bench-top cylindrical reactor from Ace Glass.

6542 All-in-One Benchtop Reactor 

A complete 1-liter general purpose, benchtop, cylindrical reactor. Self-supported and portable, with a small footprint. Features: 4" diameter flange on flask head with CAPFE O-ring and quick release clamp, all glass PTFE wetted components, PTFE joint sleeves and valves and FETFE O-rings, overhead mechanical stirring with variable speed motor with controller, electrical heating mantle with digital temp controller and type J" PTFE covered thermoprobe, 125mL equalizing addition funnel, reflux condensor, stand, clamps & holders, and clips.

Post-polymerization Reactions

  • Desired partial conversion of Polyvinyl acetate (PVAc) to Poly(vinyl acetate-co-vinyl alcohol)

End-group Analysis 

  • Carboxylic (-COOH) end-group of polyesters (PET, PBT) 
  • Hydroxyl (-OH) end-group of polyesters 
  • Acid Value of MA-g-PE/PP/EPDM (Maleic Anhydride grafted PE or PP or Rubbers)

Molecular Weight Determination by Dilute Solution Viscosity 

  • Ubbelohde type viscometers

Brookfield Viscosity 

  • Brookfield Viscometer EX-200 (for viscous solutions) 
  • Brookfield Viscometer (Model LVT) Synchro-electric (for polymer melts or highly viscous semi-solids)

 Gel Time Determination 

  • UPE (Unsaturated polyesters, UV curable polymeric binders)

FTIR Spectroscopy 

  • Perkin-Elmer FTIR spectrophotometer (Model Spectrum One) along with Spectral Libraries for identification of unknowns. 
  • HATR (Horizontal Attenuated Total Reflection) FTIR accessory for opaque solid/liquid samples (no sample preparation).
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