𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Blends of polyamide 6 and epichlorohydrin elastomers. II. Thermal, dynamic mechanical, and mechanical properties

✍ Scribed by Silvia Carla Goós Da Costa; Maria Isabel Felisberti

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
193 KB
Volume
72
Category
Article
ISSN
0021-8995

No coin nor oath required. For personal study only.

✦ Synopsis

The mechanical blending of polyamide 6 and epichlorohydrin elastomers, polyepichlorohydrin, PEPI, and poly(epichlorohydrin-co-ethylene oxide), ECO, is accompanied by grafting copolymerization. In this work the influence of the graft copolymer on the thermal and mechanical properties of the blends is investigated. The blends are immiscible and the crystallinity degree normalized to the polyamide 6 contents in the blends is higher than expected. The X-ray diffraction results show that the grafting copolymer is also crystalline; hence, the presence of crystalline phase of copolymer can be responsible for the apparent enhancement of crystallinity. The DMA analysis reveals the presence of a shoulder in the peak corresponding to the PA 6 glass transition, as observed by loss modulus curves, which was assigned to relaxations of the grafting copolymer. Tensile tests show that the blends are more fragile than the PA 6, despite the graft copolymer. These results were attributed to the mechanical fragile interface constituted by a network type structure of the graft copolymer.

📜 SIMILAR VOLUMES

Compatibilization of PBT/polyolefin blen
Compatibilization of PBT/polyolefin blends: Mechanical and dynamic mechanical properties
✍ D. Nabi Saheb; J. P. Jog 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 465 KB

Blends of polybutylene terephthalate (PBT) with very lowdensity polyethylene (VLDPE) have been studied. The blends are immiscible owing to the differences in the polarities of the component polymers. Thermal studies using a differential scanning calorimeter showed that the blending does not change t

Mechanical, thermal, and electric proper
Mechanical, thermal, and electric properties of polyurethaneimide elastomers
✍ Bogumiła Masiulanis; Ryszard Zielin̂ski 📂 Article 📅 1985 🏛 John Wiley and Sons 🌐 English ⚖ 473 KB

Linear polyurethaneimide elastomers (PUI) were obtained from polyether-or polyesterdiols, diphenylmethane diisocyanate or bitolylene diisocyanate and pyromellitic acid dianhydride. It was found that these polymers have considerably better mechanical properties than typical linear polyurethanes (PU).

Blends of polyamide 6 and epichlorohydri
Blends of polyamide 6 and epichlorohydrin elastomers. I. Graft copolymerization in the melt blending
✍ Silvia Carla Goós Da Costa; Maria Do Carmo Gonçalves; Maria Isabel Felisberti 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 256 KB 👁 1 views

With the purpose of improving the mechanical properties of the polyamides, the possibility of combining polyamides with elastomers has been used. The low compatibility of the resulting blends leads to deficient mechanical properties, and therefore, it is necessary to add the compatibilizer to the mi