Vinyl trideuteroacetate

Rp k 2 (10), and thus the relative change in rate should be proportional to the square root of the isotope effect. We felt that synthesis and polymerization of two partly deuterated vinyl acetates, trideuterovinyl acetate (D CD - OAc) and vinyl trideuteroacetate =CH-0-C-CD ) cou settle the question... 

Vinyl acetate and vinyl trideuteroacetate were run together, while trideuterovinyl acetate was run later. The lag shown in the first two is almost certainly not due to residual oxygen, as this... 

We know from Table 2 that the molecular weight of poly(vinyl trideuteroacetate) is 1.04 times that of poly(vinyl acetate). 

The intrinsic viscosities and molecular weights of poly(vinyl acetate), poly(vinyl trideuteroacetate), and poly(trideutero-vinyl acetate) at three conversions. 

However, a different mechanism had been suggested by Litt and Chang [27]. By using vinyl trideuteroacetate and trideuterovinyl acetate, they indicated that more than 90% of the transfer occurs at the vinyl hydrogens ... 

Viscometry The specific viscosity of each polymer from the bulk polymerization was measured in acetone at 30°C using an Ubbelohde dilution viscometer. Five concentrations in the range of 1.120 to 0.242 g/d poly(vinyl acetate) and polyvinyl trideuteroacetate) and 0.385 to 0.084 g/dl (poly(trideu-terovinyl acetate)) were run. Intrinsic viscosity was calculated by extrapolation of the Tlsp/c versus c plot to zero concentration. Number average molecular weights were calculated using the equation(20) [q] =1,0 x 10 1 [Mn] 0 72 which is in the mid range of the equations listed. 

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