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A Kinetic Analysis for the Free‐radical Crosslinking of Saturated Polymers by A. A. Miller is a Materials Science article available to read on EtoBox.
What is A Kinetic Analysis for the Free‐radical Crosslinking of Saturated Polymers about?
## Abstract A general expression for the crosslinking efficiency in saturated polymers by added free‐radical initiators is derived on the basis of a steady‐state kinetic treatment of the following reactions: (__a__) dissociation of initiator to form R· radicals; (__b__) transfer to produce P· polymer radicals; and (__c__) the three recombination reactions of P· and R· radicals, only one of which (P· + P·) produces a polymer crosslink. The instantaneous crosslinking efficiency (crosslinks formed per molecule of initiator decomposed) is given by: __C__ = (__k__[I]^1/2^ + 1)^−2^, where [I] is the instantaneous concentration of initiator and __k__ is constant for a given polymer–initiator system at constant temperature. Depending on the value of __k__[I]^1/2^ compared to unity, __C__ may vary from zero to unity. An average value __C̄__ of __C__ and therefore the crosslink concentration for any degree of decomposition of the initiator is given by an integrated form of the above expression. These kinetic expressions are confirmed by experimental results on the crosslinking of a polydimethylsiloxane polymer by benzoyl peroxide at 125°C. (previously reported work) and by dicumyl peroxide a
Who reads A Kinetic Analysis for the Free‐radical Crosslinking of Saturated Polymers?
It is typically read by researchers, students, and practitioners in Materials Science.
- Author
- A. A. Miller
- Publisher
- John Wiley and Sons; Wiley (John Wiley & Sons); Wiley (ISSN 0022-3832)
- Published
- 1960
- Language
- EN
- Field
- Materials Science (Physical Sciences)