Miscibility morphological studies

Blend systems are introduced by a timely review by Donald Paul and Joel Barlow focused on blend technology. This review includes a discussion of the increasingly important topic of polymer miscibility in engineering thermoplastics. The 15 papers that follow present a variety of approaches to polymer-blend morphology study, fracture and defor-... 

Morphological study, together with DMTA and DSC results, confirms the expectation of miscibility of the diblock copolymer with each component of the blend. This miscibility occurs at the interphases between the components of blends, allowing enhanced interphase interactions and better stress transfer in the blend system. This is probably due to the anchoring of each sequence of the block with its corresponding component of the blend, which is in good... 

G. Zucci, P. Viville, B. Donnio, A. Vlad, S. Melinte, M. Mondeshki, R. Graf, H.W. Spiess, Y.H. Geerts, R. Lazzaroni, Miscibility between differently shaped mesogens structural and morphological study of a phthalocyanine-perylene binary system. J. Phys. Chem. B 113, 5448-5457 (2009)... 

Recent studies in this laboratory on hydroxypropyl cellulose (HPC) blends with lignin (9,10) have indicated that the composite morphology and properties are extremely sensitive to the degree of miscibility between the two components. This paper summarizes the observations that have been made with particular regard to the development of high-strength composites. For experimental details, the reader is referred to the above referenced publications. 

PVDF is among the few semicrystalline polymers that exhibit thermodynamic compatibility with other polymers,80 in particular with acrylic or methacrylic resins.81 The morphology, properties, and performance of these blends depend on the structure and composition of the additive polymer, as well as on the particular PVDF resin. These aspects have been studied and are reported in some detail in Reference 82. For example, polyethyl acrylate is miscible with polyvinylidene fluoride, but polyisopropyl acrylate and homologues are not. Strong dipolar interactions are important to achieve miscibility with PVDF, as suggested by the observation that polyvinyl fluoride is incompatible with polyvinylidene fluoride.83... 

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