Blends PMMA/SMMA

PPE, with SAN, SMMA, SAA or SMA Miscibility of copolymers with PPE when the amount of comonomer is small. The interfacial energy between the blend components was significantly reduced by adding either a PS-b-PMMA, or PS-b-PEB-b-PMMA. The copolymers had a profound influence on morphology, phase adhesion and mechanical properties of the blend. Gottschalk et al., 1994... 

Styrene-acryhc acid (SAA) copolymers have been noted in Section 4.4.1 to exhibit miscibility with polyamides. Miscibility has also been observed with SAA and various polymethacrylates (PMMA, PEMA, PnPMA) at low AA content in SAA [745]. The miscibility window of SAA with SMMA copolymers was defined, showing a narrow miscibility range as a function of AA and MMA in the respective copolymers. The miscibility was explained using the mean field approach (copolymer repulsion mechanism). Similar results were reported for SAA copolymer blends with PEMA, with immiscibility for SAA with poly(isobutyl methacrylate) [746]. Ckjpolymerization of isobutyl methacrylate with 4-vinyl pyridine yielded miscible compositions with SAA, as would be expected based on the strong specific interaction. 

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