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Kadokawa, Jun‐ichi; Iwasaki, Yasuhiro; Tagaya, Hideyuki

doi:10.1002/1521-3927(20020901)23:13<757::aid-marc757>3.0.co;2-0

Cited by 43 publications

(20 citation statements)

References 9 publications

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“…[ 10 ] When a base is used as the catalyst, for example, KOH, it takes 12 h for the same monomer conversion. [ 11 ] Clearly, t-BuP 4 is the most effective catalyst for the polymerization of DOO so far.…”

Section: Thermal Analysismentioning

confidence: 99%

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Synthesis of Poly[(ethylene carbonate)‐co‐(ethylene oxide)] Copolymer by Phosphazene‐Catalyzed ROP

Yang

Yan

Pispas

et al. 2011

Macro Chemistry & Physics

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Poly[(ethylene carbonate)-co -(ethylene oxide)] is synthesized by ROP of 1,3-dioxolan-2-one using 1-tert -butyl-4,4,4-tris(dimethylamino)-2,2-bis[tris(dimethylamino)phosphoranylidenamino]-2 Λ 5, Λ 5-catenadiphosphazene as the catalyst. NMR spectroscopy shows that the copolymer chain consists of EO-EC-EO-EO sequences. GPC measurements indicate a PDI of 1.43-1.66 and show that the molecular weight increases with monomer conversion. Thermal analysis demonstrates that the copolymer is amorphous with a glass transition temperature of about -42 ° C and an onset decomposition temperature of about 200 ° C.

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Section: Thermal Analysismentioning

confidence: 99%

“…[10][11][12][13][14][15][16][17][18][19] The molar percents of the two comonomer units are usually not equal because of the partial elimination of carbon dioxide during the polymerization. When a Lewis acid is used as the catalyst, the resultant polymer contains about 40-50 mol% EC units.…”

mentioning

confidence: 99%

Synthesis of Poly[(ethylene carbonate)‐co‐(ethylene oxide)] Copolymer by Phosphazene‐Catalyzed ROP

Yang

Yan

Pispas

et al. 2011

Macro Chemistry & Physics

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“…A great attention has also been focused on polymer-ILs interactions [15][16][17][18][19][20][21][22][23]. The use of ILs as solvents in polymerization processes has promoted research on their influence on the final products properties.…”

Section: Introductionmentioning

confidence: 99%

Ionic liquids as lubricants of polystyrene and polyamide 6-steel contacts. Preparation and properties of new polymer-ionic liquid dispersions

et al. 2006

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Room-temperature ionic liquids (ILs) have been used as external lubricants in polystyrene (PS) and polyamide 6 (PA6)-steel contacts and as internal lubricants in new polymer-IL dispersions. 1)C n H 2n+1 )3)CH 3 -imidazolium X ) [X=BF 4 ; n=2 (IL1), 6 (IL2), 8 (IL3). X=PF 6 ; n=6 (IL4). X=CF 3 SO 3 ; n=2 (IL5). X=(4)CH 3 C 6 H 4 SO 3 ); n=2 (IL6)] ionic liquids give low friction and extremely mild wear in PS/AISI 316L stainless steel contacts, independently of IL composition. For AISI 52100 steel pins a tribocorrosion reaction produces FeF 2 and increases friction. PS+IL1 (1; 1.35; 3 wt.% IL1) dispersions show lower dry friction and wear against AISI 52100 as IL1 proportion increases, but the lowest friction, with a one order of magnitude reduction with respect to PS, is reached for PS+1%IL1 once the skin layer has been worn out. Increasing IL1 content to 10 wt.% produces an heterogeneous material with non-uniform IL distribution. IL4 reduces friction and wear in PA6+3%IL4 dispersions against AISI 316L, although the lowest values are obtained with IL4 as external lubricant. The cryofracture surfaces of the polymers have been examined and the thermal stability of the polymers in the presence of ILs has been determined.

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“…The Lewis acidity of the chlorostanate was proposed to play a key role in the generation of catalytically active Pt-complex. The same chlorostannate system was also employed in the ring-opening polymerization of ethylene carbonate [53]. Wrsemann and co-workers [54] [X] (X = Cl or Br) indicated that ILs could be useful media for the stabilization of unusual metal coordination environments [55].…”

Section: Metal-containing Ils Based On Imidazolium Saltsmentioning

confidence: 99%

Metal-containing ionic liquids and ionic liquid crystals based on imidazolium moiety

Lin

Vasam

2005

Journal of Organometallic Chemistry

286

160

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Untitled

Cited by 43 publications

References 9 publications

Synthesis of Poly[(ethylene carbonate)‐co‐(ethylene oxide)] Copolymer by Phosphazene‐Catalyzed ROP

Synthesis of Poly[(ethylene carbonate)‐co‐(ethylene oxide)] Copolymer by Phosphazene‐Catalyzed ROP

Ionic liquids as lubricants of polystyrene and polyamide 6-steel contacts. Preparation and properties of new polymer-ionic liquid dispersions

Metal-containing ionic liquids and ionic liquid crystals based on imidazolium moiety

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