Cosolvent gel-like materials from partially hydrolyzed poly(vinyl acetate)s and borax.
作者： Lora V. Angelova , Pierre Terech , Irene Natali , Luigi Dei , Emiliano Carretti
DOI: 10.1021/LA202179E
关键词:
摘要: A gel-like, high-viscosity polymeric dispersion (HVPD) based on cross-linked borate, partially hydrolyzed poly(vinyl acetate) (xPVAc, where x is the percent hydrolysis) described. Unlike hydro-HVPDs prepared from alcohol) (PVA) and liquid portion of these materials can be composed up to 75% an organic cosolvent because influence residual acetate groups polymer backbone. The effects degree hydrolysis, molecular weight, cross-linker concentrations, type amount rheological structural properties are investigated. stability systems explored through melting-range studies. (11)B NMR small-angle neutron scattering (SANS) used probe structure dispersions. addition xPVAc-borate HVPDs results in a drastic increase number borate species as well agglomeration into bundles. These result relaxation time thermal networks. ability make with very large amounts rather different liquids, that controlled easily, opens new possibilities for applications PVAc-based
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