2007
DOI: 10.1002/app.26650
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Effect of additives on the composition dependent glass transition variation in PS/PP blends

Abstract: The effect of additives on glass transition behavior in melt processed blends of polystyrene (PS) and polypropylene (PP) was studied. Blends of additive-free polystyrene and additive-free polypropylene revealed the known effect of the PS T g increase in blend compositions where PP surrounds PS. Glass transition behavior in these blends was compared to blends prepared from additivefree PP and commercial grade PS, which contained lubricant additives. The thermal transitions of PS and PP were measured using modul… Show more

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Cited by 16 publications
(19 citation statements)
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“…Consequently, the nanoscopic strain in the disordered fraction would increase from cycle to cycle, whereas the probed ε n would decrease slightly, as is observed in the experiments. In the literature similar softening effects of compatibilizers on the matrix of nanocomposites have been reported [43,44] and sideeffects of additive migration in blends and composites have been studied [45][46][47] . By the way, migration of compatibilizer into the polyamide cannot be studied by means of SAXS data from the studied materials.…”
Section: Response Of Stress and Nanoscopic Strainmentioning
confidence: 80%
See 1 more Smart Citation
“…Consequently, the nanoscopic strain in the disordered fraction would increase from cycle to cycle, whereas the probed ε n would decrease slightly, as is observed in the experiments. In the literature similar softening effects of compatibilizers on the matrix of nanocomposites have been reported [43,44] and sideeffects of additive migration in blends and composites have been studied [45][46][47] . By the way, migration of compatibilizer into the polyamide cannot be studied by means of SAXS data from the studied materials.…”
Section: Response Of Stress and Nanoscopic Strainmentioning
confidence: 80%
“…This result indicates the complexity of composite design, because the desired effects of an additive or a processing step may be accompanied by side effects [43][44][45][46][47] .…”
mentioning
confidence: 99%
“…Nesta área, a mistura de polipropileno e poliestireno é uma das mais estudadas principalmente pelo baixo custo e relevância tecnológica destes materiais [1][2][3][4][5][6][7] . Por outro lado, a compreensão das relações processamentoestrutura-propriedade em misturas poliméricas de sistemas conhecido pode ser, e frequentemente é utilizado para explicar os comportamentos observados em sistemas poliméricos mais complexos.…”
Section: Introductionunclassified
“…For example, the T g is increased from 92.9°C of pure PS to 98.8°C of 90PS/10PP; nearly 6°C enhancement compared with pure PS. This can be attributed to the PP particles preventing the relaxation of PS phase, although PP and PS are immiscible [24, 25]. With the increase in PP amount, the T g of PS increases further, but the degree of the enhancement weakens slightly, indicating most likely that there is a saturation effect of PP phase on glass‐transition behavior of PS phase.…”
Section: Resultsmentioning
confidence: 99%