Transiently trapped entanglements in model polymer networks

R. H. ACOSTA; G. A: MONTI; M. A. VILLAR; E. M. VALLES; D. A. VEGA

American Chemical Society

Año: 2009 vol. 42 p. 4674 - 4674

font face="AdvTimes" size="1"> The relaxational dynamics of trapped entanglements in model silicone polymer networks is studied through the residual dipolar couplings (RDC) obtained by double quantum nuclear magnetic resonance (DQ NMR). These experiments were performed on model polymer networks containing linear pendant chains. The model networks where synthesized by end-linking a mixture of R,ù-divinyl poly(dimethylsiloxane) (B2) and ù-vinyl poly(dimethylsiloxane) (B1) with trifunctional (A3) or tetra-funct