Polymerization of styrene in presence of tetramethylthiuramdisulphide

Štaudner, E.; Beniska, J.

doi:10.1016/s0014-3057(69)80052-2

Cited by 9 publications

(2 citation statements)

References 6 publications

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“…It was due to the lower thermal stability of DPG as compared to CBS and TMTD. 10,45 Regarding the sulfur/accelerator ratio and consequently the structure of crosslinks, no significant effect on the T 5% was observed considering the standard deviation of the obtained results.…”

Section: Thermal Stability Of Nbr Vulcanizatesmentioning

confidence: 89%

Influence of accelerators and curing system composition on the cure characteristics, crosslinks structure and properties of acrylonitrile‐butadiene elastomer

Maciejewska

Sowińska‐Baranowska

2023

J of Applied Polymer Sci

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The goal of this work is to study the influence of the type of vulcanization accelerator and the quantitative composition of the curing system on the cure characteristics, morphology of elastomer network, crosslink density and physico-chemical properties of acrylonitrile-butadiene rubber (NBR) composites.Sulfur curing systems are investigated, which consist of various types of accelerators, that is, sulfenamide, guanidine and thiuram, applied in various proportions to sulfur. The type of accelerator and the sulfur/accelerator ratio significantly affect both the cure rate and the structure and number of crosslinks resulting from the vulcanization. The highest cure rate and the lowest content of polysulfidic crosslinks are exhibited by rubber composites with efficient (EV) curing systems due to the highest content of accelerators compared to semi-efficient (SEV) and conventional (CV) systems. The structure of crosslinks strongly affect tensile properties and hardness of the vulcanizates as well as their solvent resistance, thermal stability and resistance to thermo-oxidative aging.

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Section: Thermal Stability Of Nbr Vulcanizatesmentioning

confidence: 89%

Influence of accelerators and curing system composition on the cure characteristics, crosslinks structure and properties of acrylonitrile‐butadiene elastomer

Maciejewska

Sowińska‐Baranowska

2023

J of Applied Polymer Sci

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“…Tobolsky et al'O*ll have reported the polymerization of MMA using thiuram disulfides as initiators and have observed that the polymerization rate was not proportional to the square root of the initiator concentration. Later on, Staudner et al [12][13][14] used a kinetic expression for this kind of polymerization and studied the polymerization of the monomers MMA and styrene, initiated by tetramethylthiuram disulfide.…”

Section: Introductionmentioning

confidence: 99%

Functionalization of PMMA by a functional “iniferter”: Kinetics of polymerization of MMA using N,N′‐diethyl‐N,N′‐bis(2‐hydroxyethyl) thiuram disulfide

Nair

Clouet

Chaumont

1989

J. Polym. Sci. A Polym. Chem.

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α,ω‐Dihydroxy‐terminated‐PMMA was synthesized by the bulk polymerization of methyl methacrylate in the presence of a functional “iniferter,” viz., N,N′‐diethyl‐N,N′‐bis(2‐hydroxyethyl)thiuram disulfide (DHTD). The kinetics of the polymerization were studied by determining the polymerization rate as a function of the “iniferter” concentration at 60, 70, 85, and 95°C. Evaluation of the data by a computerized multiple regression analysis led to calculation of the various kinetic parameters and the activation energies of the related phenomena. The maximum observed in the Rp–initiator concentration curve was found to shift to lower initiator concentration as the temperature increased. The formal reaction order with respect to the concentration of the initiator decreased with increasing temperature and concentration of DHTD. The chain transfer constants of DHTD with MMA were calculated from the molecular weights of the resulting polymers. The functionalities of the oligomers were calculated from the elemental analysis of the chain end groups. Thermogravimetric analysis revealed that the polymer chain ends were devoid of unsaturated groups and that the polymer underwent degradation only by random scission.

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Transfer Constants to Monomers, Polymers, Catalysts and Initiators, Solvents and Additives, and Sulfur Compounds in Free Radical Polymerization

Ueda

Nagai

1999

The Wiley Database of Polymer Properties

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Polymerization of styrene in presence of tetramethylthiuramdisulphide

Cited by 9 publications

References 6 publications

Influence of accelerators and curing system composition on the cure characteristics, crosslinks structure and properties of acrylonitrile‐butadiene elastomer

Influence of accelerators and curing system composition on the cure characteristics, crosslinks structure and properties of acrylonitrile‐butadiene elastomer

Functionalization of PMMA by a functional “iniferter”: Kinetics of polymerization of MMA using N,N′‐diethyl‐N,N′‐bis(2‐hydroxyethyl) thiuram disulfide

Transfer Constants to Monomers, Polymers, Catalysts and Initiators, Solvents and Additives, and Sulfur Compounds in Free Radical Polymerization

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