کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5183582 1381023 2012 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reinforcement in nano-filled PAA hydrogels
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Reinforcement in nano-filled PAA hydrogels
چکیده انگلیسی

Presented experimental results bring an insight into the long-standing problem of the primary reinforcing mechanism in rubbery polymers filled with fine fillers. In this project the effect of silica nanoparticles on the linear viscoelastic response of model polyacrylamide (PAA) hydrogel systems was examined. Using water as a dispersion medium allowed for separating the effect of filler-filler and the filler-polymer interaction. Rheological data suggest that the primary mechanism of the nano-reinforcement in filled PAA hydrogels comes primarily from confinement to the PAA chains and bias of their conformational states in respect to their reference states. In hydrogels with very low concentration of PAA, the transition between the filler-filler and filler-induced conformational restriction mechanism of reinforcement was captured.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Polymer - Volume 53, Issue 13, 7 June 2012, Pages 2544-2547
نویسندگان
, , ,