摘要 : Poly(vinyl alcohol) (PVA) was found to form complexes with PbCl2, Pb(NO3)(2), and Pb(CH3COO)(2). Different complex compositions were prepared by casting technique. Microdomains were observed in the case of the PbCl2-PVA system. Co... 展开 Poly(vinyl alcohol) (PVA) was found to form complexes with PbCl2, Pb(NO3)(2), and Pb(CH3COO)(2). Different complex compositions were prepared by casting technique. Microdomains were observed in the case of the PbCl2-PVA system. Complexes of PbCl2-PVA system are semicrystalline over the entire composition range. PbCl2-PVA complexes are stable to temperatures greater than 350 degrees C in comparison to 225 degrees C of pure PVA. The general features of the microdomains depends upon the temperature and the salt concentration. The hardness properties of the binary mixture were found to change in a nonlinear mode exhibiting a maximum value with the increase of the PbCl2 content and in a linear mode for the other salts. (C) 1995 John Wiley and Sons, Inc. [References: 21] 收起