Loading...
Please wait, while we are loading the content...
Similar Documents
Effects of compatibilizer on immiscible polymer blends near phase inversion
| Content Provider | Semantic Scholar |
|---|---|
| Author | Martin, Jeffrey D. Velankar, Sachin S. |
| Copyright Year | 2007 |
| Abstract | We consider the effects of adding a PIB-PDMS diblock copolymer as a compatibilizer in model blends composed of polyisobutylene (PIB) and polydimethylsiloxane (PDMS). The ratio of PIB to PDMS was varied from 20:80 to 80:20 and, hence, these blends are dubbed “concentrated” blends. Most experiments were conducted on blends containing 0.01 or 0.1wt.% compatibilizer. All blends had a droplet-matrix morphology, with the minor phase being the drop phase; thus, phase inversion occured when PIB and PDMS were in a 50:50 ratio. Previously, we have studied effects of compatibilizer in “dilute” blends with PIB and PDMS in a 10:90 ratio. Much of the rheological behavior of the concentrated blends studied here is found to be qualitatively similar to that of dilute blends: compatibilizer increases the terminal complex viscosity, the terminal relaxation time, steady shear viscosity, and the ultimate recovery upon cessation of shear. However, there are two noteworthy differences. The first is that in blends in which PIB f... |
| Starting Page | 669 |
| Ending Page | 692 |
| Page Count | 24 |
| File Format | PDF HTM / HTML |
| DOI | 10.1122/1.2742391 |
| Volume Number | 51 |
| Alternate Webpage(s) | http://www.pitt.edu/~velankar/www/papers/JORMartin07.pdf |
| Alternate Webpage(s) | https://doi.org/10.1122/1.2742391 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
