Abstract
Syntheses of model polymers of poly(vinyl alcohol)(PVA) having short branches are described. The copolymerization of vinyl acetate(VAc) and 2,4-diacetoxy-1-butene(DAB) followed by subsequent hydrolysis gave a model PVA with short branches of one monomer unit in length. In the same manner, a model PVA having short branches of two monomer units in length was obtained from the copolymer of VAc and 1,3,5-triacetoxy-5-hexene(TAH). The monomer reactivity ratios are rVAc=1.63±0.07 and rDAB=0.52±0.13 for the VAc—DAB copolymerization at 0°C, and rVAc=1.49±0.03 and rTAH=0.67±0.14 for VAc—TAH at 60°C.
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Morishima, Y., Irie, Y., Iimuro, H. et al. Short Branching in Poly(vinyl alcohol). I. Syntheses of the Model Polymers. Polym J 7, 481–489 (1975). https://doi.org/10.1295/polymj.7.481
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DOI: https://doi.org/10.1295/polymj.7.481