Composting tests were performed on cast films of PLimC (Mn=54.0 kDa, Ð=1.11) of 200 μm thickness fixed in slide mounts. The 3-month matured compost was supplied by an industrial composting plant (Mistelbach) and directly used for PLimC burial tests. Poly(L-lactic acid) (NatureWorks) was used as the positive reference material. During the test, the temperature was kept at 60 °C and the container was vented every 2 days (every 3 days after the first 2 weeks) and humidified if necessary (humidity was estimated by weighing of the container).
Poly l lactic acid
Manufactured by NatureWorks
Sourced in United States
Poly(L-lactic acid) is a biodegradable and biocompatible polymer that can be used as a material for various lab equipment. It is derived from renewable resources and has a high degree of purity and consistency.
Automatically generated - may contain errors
4 protocols using poly l lactic acid
1
Biodegradable Polymer Composting Analysis
2
Triacetine Plasticized Cellulose Acetate
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Triacetine plasticized CA (pCA), with a content of triacetine of 20 wt%, and pure CA were purchased from GIBAPLAST (Varese, Italy). Poly (l -lactic) acid, purchased from NatureWorks LLC (Minnetonka, MN, USA), was Ingeo™ 2003D Extrusion Grade, having a nominal average molecular weight Mw of 199,590 and a density of 1.24 g/cm3. Triacetine (TA), also known as glycerin triacetate or 1,2,3-triacetoxypropane, and tetrabutylammonium tetraphenylborate (TBATPB, CAS #15522-59-5) were purchased from Aldrich Chemicals (Saint Louis, MO, USA).
3
Fabrication of PLA/AgNP Composites
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Commercially available poly(l -lactic acid) (PLA) (280 kDa of molecular weight) was obtained from Nature Works LLC (Blair, NE, USA). Silver nanoparticles (AgNPs) were purchased from Wanjing New Material Co., Ltd. (Hangzhou, China), with an average particle size < 150 nm and purity of 99.0%. Tributyl acetocitrate (ATBC), a plasticizer, and chloroform, a solvent, were supplied by Chengdu Kelong Chemical Co., Ltd. (Sichuan, China). The reagents used in this work were of analytical grade.
4
Superabsorbent Polymer-Based Hydrogels
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Poly(L-lactic acid) (PLA) with a nominal weight average molecular weight (Mw) of 199,590 Da was purchased from Nature Works (Blair, NE) under the brand name Ingeo 2002D. The material was dried at 70 °C under vacuum for 12 h before use.
Poly(ε-caprolactone) (PCL) with a number average molecular weight (Mn) of 10,000 Da was supplied by Sigma-Aldrich Co. (Milan, Italy) and used as received.
Cross-linked sodium polyacrylate, a superabsorbent polymer (SAP), was purchased from Evonik Industries AG (Essen, Germany) and had the brand name Produkt T 5066 F; its particle size was lower than 60 µM and its density was 0.7 g/cm3. It was dried at 60 °C under vacuum for 12 h before use.
Type A gelatin, G (pharmaceutical grade, 280 bloom, viscosity 4.30 mP, was kindly provided by Italgel (Cuneo, Italy). Poly(ethylene glycol) diglycidyl ether, (PEGDGE) (molecular weight 526 Da) was supplied by Sigma-Aldrich Co. (Milan, Italy). Chitosan, (CH) (molecular weight between 50,000 and 190,000 Da and degree of deacetylation 75–85%) was obtained from Sigma-Aldrich Co (Milan, Italy). Ethylene diamine (EDA), ethanol, and acetic acid were provided by Fluka (Milan, Italy).
All materials were used without further purification.
Poly(ε-caprolactone) (PCL) with a number average molecular weight (Mn) of 10,000 Da was supplied by Sigma-Aldrich Co. (Milan, Italy) and used as received.
Cross-linked sodium polyacrylate, a superabsorbent polymer (SAP), was purchased from Evonik Industries AG (Essen, Germany) and had the brand name Produkt T 5066 F; its particle size was lower than 60 µM and its density was 0.7 g/cm3. It was dried at 60 °C under vacuum for 12 h before use.
Type A gelatin, G (pharmaceutical grade, 280 bloom, viscosity 4.30 mP, was kindly provided by Italgel (Cuneo, Italy). Poly(ethylene glycol) diglycidyl ether, (PEGDGE) (molecular weight 526 Da) was supplied by Sigma-Aldrich Co. (Milan, Italy). Chitosan, (CH) (molecular weight between 50,000 and 190,000 Da and degree of deacetylation 75–85%) was obtained from Sigma-Aldrich Co (Milan, Italy). Ethylene diamine (EDA), ethanol, and acetic acid were provided by Fluka (Milan, Italy).
All materials were used without further purification.
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