Well-Defined Polymers Obtained Through the Use of Controlled Radical Polymerization: the Use of Alkyl Iodides as Degenerative Transfer Agents.

reportActive / Technical Report | Accession Number: ADA295991 | Open PDF

Abstract:

Through alkyl iodides, R - X, used as degenerative transfer agents, control of the radical polymerization of styrene and butyl acrylate has been achieved. The polymerizations were initiated by AIBN and BPO, and the generated polymers obtained had molecular weights which were predetermined by the equation, DPn DM R - Xo. The resulting polymers had relatively low polydispersities, MnMw approx. 1.4. This control was achieved by using degenerative transfer of the iodine atom to produce a dynamic equilibrium between dormant and active propagating species. The effects of initiator, temperature, and transfer agent will be presented. jg p.2

Author(s):
Matyjaszewski, K. ; Gaynor, S. G. ; Wang, J. S.
Author Organization(s):
CARNEGIE-MELLON UNIV PITTSBURGH PA DEPT OF CHEMISTRY
Descriptive Note:
Technical rept.,
Pagination:
0004

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR-32
Contract/Grant Number(s):
N00014-94-1-0101
Monitor Series:
ONR
 Subject Terms
Joint Capability Areas:
JCA_3.2_Engagement; JCA_3_Force Application; JCA_3.2.1_Kinetic Means; JCA_1.2_Force Preparation; JCA_1_Force Support
Communities of Interest:
No COI(s) Identified
Descriptor(s):
*POLYMERS, *POLYMERIZATION, *STYRENES, *ALKYL RADICALS, *IODIDES, PROPAGATION, REPRINTS, DYNAMICS, MOLECULAR WEIGHT, ATOMS, BUTYL RADICALS, TRANSFER, EQUATIONS, ACRYLATES, CHEMICAL EQUILIBRIUM, DORMANCY
Field(s)/Group(s):
Polymer Chemistry, Inorganic Chemistry, Organic Chemistry, Physical Chemistry, Atomic and Molecular Physics and Spectroscopy
Keyword(s):
DEGENERATIVE TRANSFER AGENTS, POLYDISPERSITIES, INITIATORS
Report Date:
1995 Jun 30