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首页> 外文期刊>Journal of Applied Polymer Science >Polymer blends of poly(ethylene-2,6-naphthalate) with polystyrene compatibilized by styrene-glycidyl methacrylate copolymers. I. Rheology, morphology, and mechanical properties
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Polymer blends of poly(ethylene-2,6-naphthalate) with polystyrene compatibilized by styrene-glycidyl methacrylate copolymers. I. Rheology, morphology, and mechanical properties

机译：聚（2,6-萘二甲酸乙二醇酯）与聚苯乙烯的聚合物共混物，通过苯乙烯-甲基丙烯酸缩水甘油酯共聚物增容。一，流变学，形貌和力学性能

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The compatibilization of blends of poly(ethylene-2,6-naphthalate) (PEN) with polystyrene (PS), through the styrene-glycidyl methacrylate copolymers (SG) containing various glycidyl methacrylate (GMA) contents, was investigated in this study. SG copolymers are able to react with PEN terminal groups during melt blending, resulting in the formation of desirable SG-g-PEN copolymers in the blend. These in situ formed copolymers tend to reside along the interface preferentially as the result of interfacial reaction and thus function as effective compatibilizers in PEN/PS blends. The compatibilized blends exhibit higher viscosity, finer phase domain, and improved mechanical properties. It is found that the degree of grafting of the in situ formed SG-g-PEN copolymer has to be considered as well. In blends compatibilized with the SG copolymer containing higher GMA content, heavily grafted copolymers would be produced. The length of the styrene segment in these heavily grafted copolymers would be too short to penetrate deep enough into the PS phase to form effective entanglements, resulting in the lower compatibilization efficiency in PEN/PS blends. Consequently, the in situ formation of SGg-PEN copolymers with an optimal degree of grafting is the key to achieving the best performance for the eventually produced PEN/PS blends through SG copolymers. (C) 2002 Wiley Periodicals, Inc. J Appl Polym Sci 87: 967-975, 2003. [References: 22]
机译：在这项研究中，研究了聚（2,6-萘二甲酸乙二醇酯）（PEN）与聚苯乙烯（PS）的共混物通过含有各种甲基丙烯酸缩水甘油酯（GMA）含量的苯乙烯-甲基丙烯酸缩水甘油酯共聚物（SG）的相容性。 SG共聚物能够在熔融共混过程中与PEN端基反应，从而在共混物中形成所需的SG-g-PEN共聚物。这些原位形成的共聚物由于界面反应而倾向于优先沿着界面存在，因此在PEN / PS共混物中起有效的相容剂的作用。相容的共混物表现出更高的粘度，更细的相域和改善的机械性能。已经发现，还必须考虑原位形成的SG-g-PEN共聚物的接枝度。在与含有较高GMA含量的SG共聚物相容的共混物中，会生产出大量接枝的共聚物。这些重接枝共聚物中的苯乙烯链段长度太短，不足以渗透到PS相中足以形成有效的缠结，导致PEN / PS共混物的相容性效率较低。因此，原位形成具有最佳接枝度的SGg-PEN共聚物是通过SG共聚物为最终生产的PEN / PS共混物实现最佳性能的关键。 （C）2002 Wiley Periodicals，Inc. J Appl Polym Sci 87：967-975，2003。[参考：22]

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