Singh, A. K. ; Prakash, Rajiv ; Pandey, Dhananjai (2011) Reactive compatibilization of polycarbonate and poly(methyl methacrylate) in the presence of a novel transesterification catalyst SnCl2·2H2 O Journal of Physical Chemistry B, 115 (7). pp. 1601-1607. ISSN 1520-6106
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Official URL: http://pubs.acs.org/doi/abs/10.1021/jp107897a
Related URL: http://dx.doi.org/10.1021/jp107897a
Abstract
We compare the effectiveness of various known organometallic transesterification catalysts with a novel SnCl2·2H2O transesterification catalyst in the formation of homogeneous PC/PMMA blends with single Tg. It is shown that SnCl2·2H2O works more efficiently than the other organometallic transesterification catalysts. Even 0.1% (wt/wt) of SnCl2·2H2O is enough to establish an interaction between PC and PMMA phases, leading to the formation of a homogeneous PC/PMMA blend with single Tg and single degradation temperature. FTIR, 1H NMR, and XRD studies provide evidence of the formation of PC-g-PMMA graft copolymer, which acts as a compatibilizer between the PC and PMMA phases. A significant improvement in the optical transparency of the PC/10PMMA blend prepared using SnCl2·2H2O catalyst as compared with PC/10PMMA without any catalyst is observed. There is also a change in the morphology from granular in uncompatibilized blends to lamellar in the compatibilized blends.
Item Type: | Article |
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Source: | Copyright of this article belongs to American Chemical Society. |
ID Code: | 88717 |
Deposited On: | 29 Mar 2012 15:16 |
Last Modified: | 29 Mar 2012 15:16 |
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