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Non-reactive Compatibilization

Non-reactive compatibilization adding non-reactive block or graft copolymers ... [Pg.4]

The basic principles are the same for non-reactive compatibilization and reactive compatibilization, except that in reactive compatibilization, chemical reactions (functionalization and interfacial reaction) are involved in the blending process. This makes reactive compatibilization very attractive and cost-effective because ... [Pg.6]

The key to solve problems of coarse morphology is to reduce interfacial tension in the melt and to enhance adhesion between the immiscible phases in the solid state. One solution is to select the most suitable blending technique so that co-continuous phase morphology can be obtained, which results in direct load sharing. The second solution is the addition of a third homopolymer or block or graft copolymer or low molecular reactive compounds, which is miscible with either of the two phases. This can be considered as non-reactive compatibilization. The third way is to blend suitably functionalized polymers, which are capable for specific interactions or chemical reactions (reactive compatibilization) [35],... [Pg.21]

Figure 14.11 Variation of the notched Izod impact strength of PET containing 20 % of an elastomeric toughening system as a function of the ratio of reactive to non-reactive modifier. It can be seen that the 30 70 reactive non-reactive mixture provides the optimum balance. The reactive modifier acts more as a compatibilizer in this system. Note units for impact strength (kJ m 2) can be converted to J nr1 by multiplying by 10... Figure 14.11 Variation of the notched Izod impact strength of PET containing 20 % of an elastomeric toughening system as a function of the ratio of reactive to non-reactive modifier. It can be seen that the 30 70 reactive non-reactive mixture provides the optimum balance. The reactive modifier acts more as a compatibilizer in this system. Note units for impact strength (kJ m 2) can be converted to J nr1 by multiplying by 10...
Several research investigations have been made to compatibilize PET or PBT with PPE both by reactive and non-reactive routes of compatibiliza-tion [Brown et al., 1990 and 1991 Akkapeddi and VanBuskirk, 1992]. Compatibilized binary blends of PPE/polyesters still lacked adequate toughness and invariably required the addition of rubbery impact modifiers (reactive or compatible type) and polycarbonate. The addition of polycarbonate presumably suppresses the crystallization of the thermoplastic PET or PBT phase, due to its... [Pg.1096]

The reactive compatibilization leads to thick interphase, Al = 10-60 nm (see Table 1). The thickness originates either in non-uniformity of the copolymer concentration and MW along the interface, or in its undulatory shape. Experimentally, the thickness increases with annealing time up to a plateau, whose value depends on the temperature and net concentration of reactive sites [8]. The increase may simply indicate reduction of the interfacial area. [Pg.130]

There are several methods of compatibilizing immiscible blends, including compatibilization by the introduction of non-reactive graft or block copolymers, non-bonding specific interactions, low molecular weight coupling agents, and reactive polymers. [Pg.15]

In addition to reactive compatibilization, compatibilization of immiscible polymer blends may also be achieved through introduction of preformed block or graft copolymers, non-bonding specific interaction, and the addition of low molecular weight coupling agents. [Pg.33]

An important part of the present chapter discusses the interrelation between reactive compatibilization and the blend phase morphology generation, as well as the crystallization behavior of reactively compatibilized blends containing crystallizable components. The phase morphology development in reactive blending is discussed in conjunction with the non-reactive blending approach. [Pg.44]

Sundararaj compared the final size of dispersions of reactive PS (MA-grafted PS, or PSMA) and neat PS in PA 6,6 and similarly of reactive EP (EP-MA) and unreactive EP in PS-Ox, at constant mixing time [73]. The content of the dispersed phase was very small (less than lwt%), so that the rate of coalescence was negligible, even in non-compatibilized blends [56, 74]. The fast MA/NH2 reaction in the PA 6,6/PSMA system was responsible for smaller particle size compared to the non-reactive PA 6,6/PS system. Such a difference was not observed in the case of the slower MA/Ox reaction. Therefore, the MA/Ox reaction was assumed to occin essentially beyond the initial melting/softening... [Pg.90]

The effects of compatibilization both by reaction and addition of block copolymers are demonstrated in Fig. 5.10. Either type of compatibilization suppresses coalescence, resulting in lower dispersed phase sizes compared to the non-compatibilized blend. The reactive compatibilization is clearly more potent than addition of block copolymer and evidently suppresses coalescence completely over the concentration of dispersed phase investigated. Curiously, in this blend neither compatibilization scheme substantially reduces the dispersed phase domain size in the low concentration limit. The reason for this is not clear, although it may be due to the presence of an interphase with different rheological properties than either of the main components. Figure 5.11 shows a more... [Pg.124]

The chemistry involved is very efficient for compatibilization. The PP domain size in the reactive PP-g-MA/PA6 blend (B) is about 50 times smaller than in the non-reactive counterpart (A), i.e., 0.32 pm vs. 16.3 pm. [Pg.159]

In physical blending, the compatibilizing agent is chemically synthesized prior to the blending operation, and subsequently added to the blend components as a non-reactive component. Owing to its chemical and molecular characteristics, the added agent is able to locate at the interface, reducing the interfacial tension between the blend components (emulsification effect), control the coalescence and... [Pg.24]


See other pages where Non-reactive Compatibilization is mentioned: [Pg.641]    [Pg.434]    [Pg.265]    [Pg.219]    [Pg.220]    [Pg.5]    [Pg.6]    [Pg.641]    [Pg.434]    [Pg.265]    [Pg.219]    [Pg.220]    [Pg.5]    [Pg.6]    [Pg.569]    [Pg.1146]    [Pg.434]    [Pg.431]    [Pg.84]    [Pg.578]    [Pg.5]    [Pg.6]    [Pg.8]    [Pg.8]    [Pg.10]    [Pg.45]    [Pg.56]    [Pg.64]    [Pg.73]    [Pg.95]    [Pg.119]    [Pg.123]    [Pg.132]    [Pg.134]    [Pg.144]    [Pg.162]    [Pg.170]    [Pg.171]    [Pg.174]    [Pg.175]    [Pg.222]    [Pg.162]    [Pg.216]   
See also in sourсe #XX -- [ Pg.432 ]




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Compatibilization

Compatibilizers

Compatibilizing

Non-reactive

Reactive compatibilization

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