Synthesis, dimensions and solution properties of linear and macrocyclic poly(chloroethyl vinyl ether)-g-polystyrene comblike polymers

Schappacher, Michel; Billaud, Claude; Paulo, Christophe; Deffieux, Alain

doi:10.1002/(sici)1521-3935(19991001)200:10<2377::aid-macp2377>3.3.co;2-2

Cited by 39 publications

(80 citation statements)

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“…This phenomenon is well-known, e.g. the intrinsic viscosities of polystyrene molecular brushes [30] are significantly lower compared to those of linear analogues. Surprisingly, the intrinsic viscosities in a series of comb-like polymethylsiloxanes decrease, as the length of side chains increases.…”

Section: Synthesis and Physical Properties Of Comb-like Polymethylsilsupporting

confidence: 67%

Comb-Like Polymethylsiloxanes. Synthesis, Structure and Properties

Obrezkova

Калинина

Pavlichenko

et al. 2014

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Comb-like polymethylsiloxanes consisting of a silsesquioxane backbone and dimethylsiloxane side chains were synthesized by means of the "grafting to" method using a linear polyfunctional matrix [SiMe(ONa)O] n and monofunctional oligomers (CH 3 ) 3 Si[OSi(CH 3 ) 2 ] n OCOCH 3 . The effects of architecture of the synthesized methylsiloxane polymers on their physicochemical properties, rheology, and behavior at the air-water interface were studied and compared with those for the linear analoguepolydimethylsiloxane.

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Section: Synthesis and Physical Properties Of Comb-like Polymethylsilsupporting

confidence: 67%

Comb-Like Polymethylsiloxanes. Synthesis, Structure and Properties

Obrezkova

Калинина

Pavlichenko

et al. 2014

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“…The effect of molecular weights of branch and backbone chains on the efficiency in the reaction of polystyryllithium with poly(chloroethyl vinyl ether) was also previously reported by Deffieux et al [24] In their reaction system, polystyryllithiums of M -n values in the range of 3.0-19.2 kg/mol were quantitatively reacted with poly(chloroethyl vinyl ether) (M -n = 3.98 kg/mol, DP n = 36). The efficiency, however, gradually decreased with increasing molecular weight of the backbone polymer but was still 86% even in the reaction of polystyryllithium (M -n = 3.0 kg/mol) with a very high molecular weight poly(chloroethyl vinyl ether) (M -n = 3 340 kg/mol, DP n = 1 042).…”

Section: Reaction Of Poly(m-halomethylstyrene)s With Polystyryllithiummentioning

confidence: 99%

“…A very similar tendency was also observed in the case of the poly[(chloroethyl vinyl ether)-graft-styrene] with one graft per repeating unit reported by Deffieux et al, although the main and branch chains are not consisting of a same polymer chain in their graft polymers. [24] The results indicate that our branched polystyrenes synthesized have high compact structures comparable to those of the corresponding star-branched polymers.…”

Section: Solution Property Of the Branched Polystyrene Synthesized Inmentioning

confidence: 99%

“…Surprisingly, even a polystyrene branch with a high molecular weight (M -n = 19.2 kg/mol) could be introduced nearly quantitatively. [24] Very recently, we have demonstrated the successful synthesis of highly branched polystyrenes with the same architecture by the linking reaction of poly(m-halomethylstyrene)s with either polystyryllithium or polystyryllithium end-capped with 1,1-diphenylethylene (DPE). [25] Accordingly, our success as well as that by Deffieux and Schappacher strongly indicate that branched polymers with one branch per repeating unit can be synthesized by analogous reactions based on the "grafting-onto" method.…”

Section: Introductionmentioning

confidence: 99%

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Synthesis of Branched Polymers by Means of Living Anionic Polymerization, 7. Synthesis of Well-Defined Highly Branched Polymers and Graft Copolymers Having One Branch per Repeating Unit Using Poly(m-halomethylstyrene)s as Backbone Polymers

Ryu

Hirao²

2001

Macromol. Chem. Phys.

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Well‐defined poly(m‐chloromethylstyrene) and poly(m‐bromomethylstyrene) were prepared by the living anionic polymerization of m‐(tert‐butyldimethylsilyl)oxymethylstyrene and subsequent transformation reactions with BCl3 and (CH3)3SiCl/LiBr. The reaction of poly(m‐chloromethylstyrene)s with 1,1‐diphenylethylene (DPE) end‐capped polystyryllithium proceeded very fast in the initial stage (76% of efficiency after 10 min) and reached quantitative reaction efficiency after 24 h at –40°C. The reaction of poly(m‐bromomethylstyrene) with DPE end‐capped polystyryllithium of molecular weight value of up to 68.8 kg/mol proceeded completely without steric hindrance of the polystyrene branch at –40°C for 168 h to afford a very high molecular weight branched polystyrene with one branch per repeating unit (M̄w = 2.3 million). Well‐defined graft copolymers with the same architecture were also successfully synthesized by reacting poly(m‐halomethylstyrene)s with living anionic polymers of isoprene, 2‐vinylpyridine, and tert‐butyl methacrylate at –40°C for 168–336 h. The high compact structures of the branched polystyrenes synthesized here comparable to those of star‐branched polymers were confirmed by viscosity measurement performed in toluene at 35°C.

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“…There are three main approaches for the synthesis of amphiphilic brush copolymers [30], which include graftingthrough (i.e., homo-and copolymerisation of macromonomers) [31][32][33][34], grafting-from (i.e., grafting side chains from the backbone) [35][36][37][38] and grafting-onto (i.e., attachment of side chains to the backbone) [39][40][41][42][43][44]. Presently, a variety of well-defined amphiphilic polymers with various architectures have been synthesised by controlled/"living" polymerisation methods, such as atom transfer radical polymerisation (ATRP) [45][46][47], ring-opening polymerisation (ROP) [46,48,49], nitroxide-mediated free radical polymerisation (NMP) [50][51][52], ring-opening metathesis polymerisation (ROMP) [46,53,54] and reversible addition-fragmentation chain transfer (RAFT) polymerisation [55][56][57][58][59][60].…”

Section: Introductionmentioning

confidence: 99%