Donor-Acceptor Complexes in Copolymerization. XXVIII. Role of Matrices in Polymerization of Comonomer Charge Transfer Complexes
- 1 January 1972
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science: Part A - Chemistry
- Vol. 6 (2) , 259-279
- https://doi.org/10.1080/0022233x.1972.10131856
Abstract
In a proposed mechanism for the homopolymerization of comonomer charge transfer complexes to alternating copolymers, the dimeric [D+−.. A…MX-XM…A−+..D] complexes are arranged in the form of a rigid matrix whose size is determined by the initial complex concentration. After polymerization proceeds through the matrix, uncomplexed monomers diffuse to the complexing agent affixed to the copolymer chain, new complexes are generated, and the new copolymer replicates the molecular weight of the original matrix. The addition of vanadium compound to a D-A…RxAIXy system converts the dimeric to monomeric complexes which form a smaller, flexible matrix and yield lower molecular weight copolymer. Nitriles which coordinate with the Al atom behave similarly to the vanadium compounds.Keywords
This publication has 24 references indexed in Scilit:
- Effect of azobisisobutyronitrile and other dinitriles in styrene‐methyl methacrylate‐AlEt1.5Cl1.5 polymerizationJournal of Polymer Science Part B: Polymer Letters, 1972
- Preparation of alternating copolymers in the presence of metal halides in an aqueous mediumJournal of Polymer Science Part B: Polymer Letters, 1971
- New information on the alternating copolymerization of butadiene‐1,3 with acrylonitrileJournal of Polymer Science Part A-1: Polymer Chemistry, 1970
- Donor‐acceptor complexes in copolymerization V. The “non‐terminating” stage in the copolymerization of styrene and methyl methacrylate in the presence of (c2H5)1.5A1C11.5Journal of Polymer Science Part B: Polymer Letters, 1970
- Polymerization of coordinated monomers. IV. Copolymerization of methyl methacrylate– and methacrylonitrile–Lewis acid complexes with styreneJournal of Polymer Science Part A-1: Polymer Chemistry, 1970
- Polymerization of coordinated monomers. III. Copolymerization of acrylonitrile–zinc chloride, methacrylonitrile–zinc chloride or methyl methacrylate–zinc chloride complex with styreneJournal of Polymer Science Part A-1: Polymer Chemistry, 1970
- Alternate copolymerization of butadiene with acrylonitrile accelerated by UV‐irradiationJournal of Polymer Science Part B: Polymer Letters, 1970
- Novel catalysts for an alternating‐type copolymerization by butadiene and acrylonitrileJournal of Polymer Science Part B: Polymer Letters, 1969
- Copolymerization of butadiene‐1,3 with acrylonitrile by an AlEtCl2 · AN/VOCl3 catalyst systemJournal of Polymer Science Part B: Polymer Letters, 1969
- Transition Metal Catalysts. IV. Role of Valence in Low Pressure Catalysts1Journal of the American Chemical Society, 1960