Degradable extruded netting made from polymer blend compositions
View Patent ↗Degradable extruded nettings are provided. Degradable extruded nettings may include a plurality of interconnected strands, at least some of the strands being made from a polymeric blend, the polymeric blend including a polylactic acid polymer composition, polybutylene succinate, and a degradation additive, the degradation additive including a degrader in a carrier resin are provided. Grass sod and methods for preparing grass sod using such degradable extruded nettings are also provided.
1 . A polymeric blend composition suitable for preparing a degradable extruded netting, the polymeric blend composition comprising:
a polylactic acid composition in an amount ranging from about 55% to about 60% by weight;
a polybutyrate composition in an amount ranging from about 35% to about 40% by weight;
a compatibilizer composition in an amount ranging from about 0.5% to about 3% by weight; and
a degradation additive in an amount ranging from about 2% to about 7% by weight, wherein the degradation additive comprises iron stearate and manganese stearate in a carrier resin.
2 . The polymeric blend composition of claim 1 comprising:
about 55% to about 58% by weight of the polylactic acid composition;
about 38% by weight of the polybutyrate composition;
about 2% by weight of a compatibilizer, wherein the compatibilizer is a polylactic acid-polybutyrate compatibilizer; and
about 2% to 5% by weight of the degradation additive.
3 . The polymeric blend composition of claim 2 comprising:
about 55% to about 57% by weight of the polylactic acid composition; and
about 3% to about 5% by weight of the degradation additive.
4 . The polymeric blend composition of claim 1 , wherein the degradation additive further comprises a metal carboxylate in the carrier resin.
5 . The polymeric blend composition of claim 1 , wherein the degradation additive comprises about 5% by weight of the iron stearate in the carrier resin, based on the total weight of the degradation additive.
6 . The polymeric blend composition of claim 1 , wherein the polybutyrate composition comprises one or more polybutylene adipate terephthalate (PBAT) polymers.
7 . The polymeric blend composition of claim 1 , wherein the polylactic acid composition comprises one or more polylactic acid polymers derived from plant starch.
8 . The polymeric blend composition of claim 1 , wherein the compatibilizer composition comprises a compatibilizer selected from polypropyleneglycol di glycidyl ether, epoxidized cottonseed oil (ECSO), or maleinized cottonseed oil (MCSO).
9 . The polymeric blend composition of claim 1 , wherein the degradation additive comprises iron stearate in an amount of about 2.5% by weight and manganese stearate in an amount of about 2.5% by weight, with respect to the total weight of the degradation additive.
10 . A polymeric blend composition suitable for preparing a degradable extruded netting, the polymeric blend composition comprising:
a polylactic acid composition in an amount ranging from about 55% to about 60% by weight;
a polybutyrate composition in an amount ranging from about 35% to about 40% by weight; and
a degradation additive in an amount ranging from about 2% to about 7% by weight, wherein the degradation additive comprises iron stearate and manganese stearate in a carrier resin.
11 . The polymeric blend composition of claim 10 , comprising:
about 55% to about 57% by weight of the polylactic acid composition
about 38% by weight of the polybutyrate composition; and
about 3% to about 5% by weight of the degradation additive.
12 . The polymeric blend composition of claim 10 , wherein the degradation additive further comprises a metal carboxylate in the carrier resin.
13 . The polymeric blend composition of claim 10 , wherein the degradation additive comprises about 5% by weight of the iron stearate in the carrier resin, based on the total weight of the degradation additive.
14 . The polymeric blend composition of claim 10 , wherein the polybutyrate composition comprises one or more polybutylene adipate terephthalate (PBAT) polymers.
15 . The polymeric blend composition of claim 10 , wherein the polylactic acid composition comprises one or more polylactic acid polymers derived from plant starch.
16 . Grass sod comprising:
grass grown in soil; and
degradable extruded netting in the soil, the degradable extruded netting including:
a plurality of interconnected strands, at least one of the plurality of interconnected strands being made from a polymeric blend, the polymeric blend comprising:
a polylactic acid composition in an amount ranging from about 55% to about 60% by weight;
a polybutyrate composition in an amount ranging from about 35% to about 40% by weight; and
a degradation additive in an amount ranging from about 2% to about 7% by weight, wherein the degradation additive comprises iron stearate and manganese stearate in a carrier resin.
17 . The grass sod of claim 16 , wherein the degradation additive comprises about 5% by weight of the iron stearate in the carrier resin, based on the total weight of the degradation additive.
18 . The grass sod of claim 16 , wherein the degradation additive further comprises a metal carboxylate in the carrier resin.