Fiber comprising polyethylene blend
The present disclosure is directed to a fiber that is composed of a polymeric blend including (i) 95 wt % to 99 wt % of a high density ethylene-based polymer having a Mw/Mn from 2.0 to 3.0 and (ii) from 5 wt % to 1 wt % of a low density ethylene-based polymer having a melt index from 5 g/10 min to 15 g/10 min. The fiber has a density from 1 denier to 2 denier and a 3% secant modulus from 8.5 g/denier to 20 g/denier.
1. A fiber comprising:
a polymeric blend comprising
from 95 wt % to 99 wt % of a high density ethylene-based polymer having a M w /M n from 2.0 to 3.0;
from 5 wt % to 1 wt % of a low density ethylene-based polymer having a melt index from 5 g/10 min to 15 g/10 min wherein the low-density ethylene-based polymer is present to the exclusion of linear low density polyethylene; and
the fiber having a density from 1 denier to 2 denier and a 3% secant modulus from 8.5 g/denier to 20 g/denier.
2. The fiber of claim 1 having a 3% secant modulus from 10 g/denier to 20 g/denier.
3. The fiber of claim 1 having a ramp-to-break from 2600 mpm to 3200 mpm.
4. The fiber of claim 1 wherein the high density ethylene-based polymer has a density from greater than 0.930 g/cc to 0.96 g/cc and a melt index from 15 g/10 min to 20 g/10 min.
5. The fiber of claim 1 wherein the high density ethylene-based polymer has a Mz/Mw less than 2.0.
6. The fiber of claim 1 wherein the high density ethylene-based polymer has a zero-shear viscosity ratio greater than 1.1.
7. The fiber of claim 1 wherein the high density ethylene-based polymer has a vinyls/10 6 carbons of less than 100.
8. The fiber of claim 1 wherein the low density ethylene-based polymer has a density from 0.915 g/cc to 0.925 g/cc and a melt index from 5 g/10 min to 15 g/10 min.
9. The fiber of claim 1 wherein the fiber is a melt-spun fiber.
10. The fiber of claim 1 wherein the fiber has a density of 2 denier, a 3% secant modulus from 10 g/denier to 20 g/denier, a tensile strength from greater than 1.0 g/denier to 1.3 g/denier, and a ramp-to-break from 2600 mpm to 3200 mpm.
11. The fiber of claim 1 wherein the fiber has a heat of crystallization greater than 205 J/g.
12. A fabric comprising the fiber of claim 1 .
13. The fiber of claim 1 wherein the high density ethylene-based polymer is an ethylene/octene copolymer.
14. A fiber comprising:
a polymeric blend comprising
from 95 wt % to 99 wt % of a high density ethylene-based polymer having
(i) a M w /M n from 2.0 to 3.0;
(ii) a zero-shear viscosity ratio greater than 1.1;
from 5 wt % to 1 wt % of a low density ethylene-based polymer (LDPE) having a melt index from 5 g/10 min to 15 g/10 min, the LOPE present to the exclusion of linear low density polyethylene; and
the fiber having a density from 1 denier to 2 denier and a 3% secant modulus from 8.5 g/denier to 20 g/denier.
15. The fiber of claim 14 wherein the high density ethylene-based polymer has a Mz/Mw less than 2.0.
16. The fiber of claim 15 wherein the high density ethylene-based polymer has a density from greater than 0.930 g/cc to 0.96 g/cc and a melt index from 15 g/10 min to 20 g/10 min.
17. The fiber of claim 16 having a ramp-to-break from 2600 mpm to 3200 mpm.
18. The fiber of claim 17 wherein the high density ethylene-based polymer is an ethylene/octene copolymer.