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Exact(16)
Depending on the monomers used for polycondensation, polyketones of regular structure with different iso-/tereisomer repeating unit ratio (1000, 5050, 0100) in the main chain were obtained.
On the other hand, as the carbonate/ester repeating unit ratio increases, the penetration of PEC into PET tends to increase, and the corresponding suppression of crystallization was observed.
Brominated fluorine-containing homopolycarbonates and copolycarbonates of varied unit ratio were synthesized from 3,3′,5,5′-tetrabromobisphenol 3,3′,5,5′-tetrabromobisphenolsed with trichloromethyl choloroformAFe and a phase-transfer catalyst at 25°C.
High molecular weight, linear aromatic poly ether ketone ketone)s with different iso-/tere-isomer repeating unit ratio (1000, 5050, 0100) have been studied by 1H and 13C n.m.r.
Since S,S′-bis α,α′-dimethyl-α″-acetic acid)trithiocarbonate waS,S′-bis α as CTA for living polymerization, narrow molecular weight distribution (Mw/Mn = 1.27) was obtained, and the repeating unit ratio to feeding ratio ([AA] /[NIPAAm] = 1/1.45) estimated by NMR analysis was close to the feeding ratio as shown in Table 1.
Table 1 Analytical data for copolymers Run Copolymer Yield Unit ratio in copolymer M n e (×103) PDIe 1a 1 59c NVF MOENVF = 22 78 8.1 3.8 2b 2 42d NVF NVFazo:MOENVF = 6 16:78 4.0 4.8 aPolymerization conditions: Solvent = toluene.
Similar(44)
Unit ratios in 1 and 2 were calculated for integral intensity from 1H NMR spectra (Additional file 1: Figure S2).
A series of donor-rich semi-random copolymers with various benzodithiophene (donor unit)/fluorinated-thienothiophene (acceptor unit) ratios – D2A, D3A, D5A, D7A – were designed and synthesized for use in polymer solar cells (PSCs).
The grafting of the copolymers proceeded effectively to give the functionalized polysilsesquioxane derivatives, in which the monomer unit ratios almost reflected the feed molar ratios of the monomers and no formation of gel product was observed.
The viral particle/plaque forming unit ratios for these vectors were in the range of 12 20.
In wild-type animals motor unit ratios for both the EDL and soleus muscles are close to 1.0, indicating that there are no significant differences present between either sides.
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