کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5185526 | 1502551 | 2009 | 8 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Effects of pairwise, donor-acceptor functional groups on polymer solubility, solution viscosity and mist control Effects of pairwise, donor-acceptor functional groups on polymer solubility, solution viscosity and mist control](/preview/png/5185526.png)
Homologous series of functionalized polymers were used to compare the solution properties of donor-acceptor (DA) interpolymer mixtures with those of self-associating and non-associating polymer analogues. Polymer analogous synthesis was used to produce a series of polymers from a specific, anionically-polymerized prepolymer (1250Â kg/mol polybutadiene), using thiol-ene coupling to incorporate systematically-varied contents of side groups: either tertiary amines (as proton acceptors) or carboxylic acids (both as proton donors in donor-acceptor mixtures, or as self-associating moieties in single-polymer solutions). Comparison with controls reveals that, relative to the effects of self-associations, DA interpolymer interactions more strongly affect solution properties such as phase behavior, interpolymer aggregation, shear viscosity, and elastic response in extensional flow. Specifically, DA associations lead to (i) greater reductions in polymer solubility in hydrocarbon solvents, (ii) interpolymer aggregation into larger clusters, and (iii) greater shear viscosity in solution. Nevertheless, DA associations reduced solution elasticity and mist suppression-a highly unanticipated result in light of the prior literature.
Journal: Polymer - Volume 50, Issue 26, 10 December 2009, Pages 6323-6330