Analytische Untersuchung einer Polymerlegierung aus Polyamid und Ethylencopolymeren

Braun, Dietrich; Illing, W.

doi:10.1002/apmc.1987.051540114

Cited by 6 publications

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

Blends of polyamide 6 with bisphenol‐A polycarbonate. II. Morphology–mechanical properties relationships

Gattiglia

Turturro

Pedemonte

et al. 1990

J of Applied Polymer Sci

View full text Add to dashboard Cite

SynopsisThe relationships between morphology and mechanical properties in polyamide G/bisphenol-A polycarbonate blends have been investigated by means of Scanning Electron Microscopy and tensile tests. The immiscibility of the two polymers gives rise to biphasic blends in which the polycarbonate constitutes the matrix when its concentration is higher than 35 wt %. The morphology of the blends is controlled by the thermal and rheological characteristics, as well as by the mixing conditions. In general, the adhesion at the interface between the phases is absent. Moreover, polycarbonate-rich blends can be considered as polycarbonate matrix with holes. As a consequence, the blends are mechanically much weaker than the pure components both in terms of Young's modulus and strength a t break. Blends very rich in polyamide, more than 90% by weight, behave differently, probably because of chemical, interchain interactions. This is reflected positively in the impact behavior, which was improved in this composition range.

show abstract

Blends of polyamide 6 with bisphenol‐A polycarbonate. II. Morphology–mechanical properties relationships

Gattiglia

Turturro

Pedemonte

et al. 1990

J of Applied Polymer Sci

View full text Add to dashboard Cite

show abstract

Miscibility of polyamide‐6 and polystyrene functionalized with sulfonic acid groups

Molnár

Eisenberg

1992

Polymer Engineering & Sci

View full text Add to dashboard Cite

Polyamide‐6 (PA‐6) and sulfonated polystyrene (SPS) interact strongly in solution. Thus, solution blends of PA‐6 and SPS (sulfonation levels from 0 to 12.3 mol%) in m‐cresol form clear, hazy, or gelled solutions–depending on the ratio of amide (A) to sulfonic acid (S) groups (A/S). NMR studies show that the S groups interact with the nitrogen of the amides, most probably through the transfer of the sulfonic acid protons. During melt blending, the addition of SPS to the PA‐6 leads to a torque rise because of strong interactions. The glass transition temperatures of the components in the melt blended samples shift towards each other as the sulfonation level of the SPS increases, indicating enhanced miscibility. The analysis of the extracted PA‐6 from thee blends, however, shows that it is degraded at processing temperatures (250°C), owing to some residual water and the catalytic activity of the sulfonic acid groups. The extent of the PA‐6 degradation is inversely related to the A/S ratio. Each sulfonic acid group causes between one and two chain scissions of the PA‐6. In blends with high A/S ratios, the degradation of the PA‐6 is minimal; yet considerable dispersion of the SPS can be achieved, as evidenced by scanning electron micrographs of the fracture surfaces.

show abstract

Reactive Compatibilization of Polymer Blends

Brown¹

2003

Polymer Blends Handbook

View full text Add to dashboard Cite

Analytische Untersuchung einer Polymerlegierung aus Polyamid und Ethylencopolymeren

Cited by 6 publications

References 18 publications

Blends of polyamide 6 with bisphenol‐A polycarbonate. II. Morphology–mechanical properties relationships

Blends of polyamide 6 with bisphenol‐A polycarbonate. II. Morphology–mechanical properties relationships

Miscibility of polyamide‐6 and polystyrene functionalized with sulfonic acid groups

Reactive Compatibilization of Polymer Blends

Contact Info

Product

Resources

About