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- Bulk_polymerization abstract "Bulk polymerization or mass polymerization is carried out by adding a soluble initiator to pure monomer in liquid state. The initiator should dissolve in the monomer. The reaction is initiated by heating or exposing to radiation. As the reaction proceeds the mixture becomes more viscous. The reaction is exothermic and a wide range of molecular masses are produced.Bulk polymerization is carried out in the absence of any solvent or dispersant and is thus the simplest in terms of formulation. It is used for most step-growth polymers and many types of chain-growth polymers. In the case of chain-growth reactions, which are generally exothermic, the heat evolved may cause the reaction to become too vigorous and difficult to control unless efficient cooling...Bulk polymerization has several advantages over other methods, these advantages are: The system is simple and requires thermal insulation. The polymer obtained is pure. Large castings may be prepared directly. Molecular weight distribution can be easily changed with the use of a chain transfer agent. The product obtained has high optical clarityDisadvantages: Heat transfer and mixing become difficult as the viscosity of reaction mass increases. The problem of heat transfer is compounded by the highly exothermic nature of free radical addition polymerization. The polymerization is obtained with a broad molecular weight distribution due to the high viscosity and lack of good heat transfer. Very low molecular weights are obtained. Gel effect should be thereFor reducing the disadvantages of bulk polymerization, the process can be carried out in a solution. This is known as solution polymerization.fr:Procédé de polymérisation#Polymérisation en masse".
- Bulk_polymerization wikiPageID "24679482".
- Bulk_polymerization wikiPageLength "2316".
- Bulk_polymerization wikiPageOutDegree "9".
- Bulk_polymerization wikiPageRevisionID "704131120".
- Bulk_polymerization wikiPageWikiLink Category:Polymerization_reactions.
- Bulk_polymerization wikiPageWikiLink Exothermic_process.
- Bulk_polymerization wikiPageWikiLink Molar_mass_distribution.
- Bulk_polymerization wikiPageWikiLink Monomer.
- Bulk_polymerization wikiPageWikiLink Polymer.
- Bulk_polymerization wikiPageWikiLink Polymerization.
- Bulk_polymerization wikiPageWikiLink Radical_initiator.
- Bulk_polymerization wikiPageWikiLink Viscosity.
- Bulk_polymerization wikiPageWikiLinkText "Bulk polymerization".
- Bulk_polymerization wikiPageWikiLinkText "bulk polymerization".
- Bulk_polymerization wikiPageWikiLinkText "bulk".
- Bulk_polymerization wikiPageUsesTemplate Template:Citation_needed.
- Bulk_polymerization wikiPageUsesTemplate Template:Noreferences.
- Bulk_polymerization subject Category:Polymerization_reactions.
- Bulk_polymerization type Reaction.
- Bulk_polymerization comment "Bulk polymerization or mass polymerization is carried out by adding a soluble initiator to pure monomer in liquid state. The initiator should dissolve in the monomer. The reaction is initiated by heating or exposing to radiation. As the reaction proceeds the mixture becomes more viscous. The reaction is exothermic and a wide range of molecular masses are produced.Bulk polymerization is carried out in the absence of any solvent or dispersant and is thus the simplest in terms of formulation.".
- Bulk_polymerization label "Bulk polymerization".
- Bulk_polymerization sameAs Q6137196.
- Bulk_polymerization sameAs Substanzpolymerisation.
- Bulk_polymerization sameAs 塊状重合.
- Bulk_polymerization sameAs ബൾക്ക്_പോളിമറൈസേഷൻ.
- Bulk_polymerization sameAs m.080g9b0.
- Bulk_polymerization sameAs Q6137196.
- Bulk_polymerization wasDerivedFrom Bulk_polymerization?oldid=704131120.
- Bulk_polymerization isPrimaryTopicOf Bulk_polymerization.