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Interfacial structure in reacting poly(methyl methacrylate)/polycarbonate polymer blends
Author(s) -
Yoon H.,
Han C. C.
Publication year - 1995
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760351808
Subject(s) - materials science , polycarbonate , transesterification , methyl methacrylate , polymer , poly(methyl methacrylate) , phase (matter) , polymer chemistry , neutron scattering , chemical engineering , composite material , scattering , organic chemistry , copolymer , catalysis , optics , chemistry , physics , engineering
The snall angle neutron scattering (SANS) technique has been used to study the interfacial structure development in poly(methyl methacrylate)/polycarbonate (PMMA/PC) blends through transesterification. We found: (1) Development of interfacial structure through transestrification at the phase separated domain interfaces are observed at T ≤ 200°C. At T ≥ 215°C, because of a higher transesterification rate, the melting of domains is observed together with very weak scattering by interfacial structure. (2) Interfacial thickness t i increases with time and reaches a plateau value of t i at 32.5 ± 2.4 Å and 29.6 ± 3.7 Å for 180°C and 200°C, respectively. (3) The internsity profiles at 190°C and long times shows the formation of spherical domains similar to those reported by Rabeony et al. (1). These may be caused by the crosslinking effect of the transesterification reaction between PMMA and PC.