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19 Dec 2017 Reactive Compatibili | An increasing number of commercial polymer products is derived from blending two or more polymers to achieve a favorable balance of physical properties. As described in Chapter 2 of this Handbook, from the thermodynamic point of view there are two basic types of polymer
cible blends principally because the structure of the compatibilizer is known precisely, and the amount of compatibilizer present in the blend can be controlled exactly. However, industrially it is much more common to generate a compatibilizer by an interfacial chemi- cal reaction between reactive polymers.
(ref. 1,2). The technique of reactive compatibilization is based on the in-situ formation of a block- or graft copolymer at the interface between the phases of a polymer blend during melt-mixing. In some cases, a third polymer, which is miscible with one of the blend components and reactive with the other, can be used for the.
This review examines some recent developments in the field of reactive com- patibilization of polymer blends by melt processing in extruders and intensive batch mixers. Three routes to reactive compatibilization are considered, namely, the use of suitably functionalized blend constituents, the incorporation of poly-.
reactive compatibilization, a procedure in which functional groups are incorporated onto the polymer chains of the blend components and react during the processing to form copolymers that stabilize the dispersion. While some effort has been directed at understanding the relationship between reactivity and morphology
5 Aug 2012 Reactive Compatibilization has at least two advantages: 1. First, the copolymer is automatically formed at the interface between the two immiscible polymers where it is needed to stabilize mor- phology. In contrast, when a compatibilizing copolymer is added as a separate entity to a polymer blend, it must
10.1002/spepro.003188. Reactive compatibilization of polymer blends. Indose Aravind and Sabu Thomas. The rheology and morphology of uncompatibilized and patibilized blends. Dn, Dw: Average domain size of dispersed particles. (number- and weight-averaged parameters). Figure 3. Effect of blend ratio on the
Often times, a compatiblizer is a block of graft copolymer of the two components of immiscible blend of polymer A and polymer B. . Another method of reactive compatibilization is based on the addition of a reactive polymer to the blend as a third component; because most blend components do not have the appropriate
The development of blends of immiscible polymers with specified properties often requires the addition of a compatibilizer to favor a fine dispersion by lowering the inter- facial tension, to stabilize the morphology by reducing coalescence, and to improve the interfacial adhesion between phases. Compatibilization of a blend
1 Apr 2004 Strategies for Blend Compatibilization. There are several methods of compatibilizing immiscible blends, including compatibiliza- tion by the introduction of non-reactive graft or block copolymers, non-bonding speci®c interactions, low molecular weight coupling agents, and reactive polymers. 2.2.2.1.
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