<<O>>  Difference Topic PLA (r1.8 - 05 Oct 2007 - VikOlliver)
META TOPICPARENT PrintingMaterials

PLA

Line: 11 to 11

Availability

Changed:
<
<		 ???
>
>		 We were fortunate to be supplied a 10kg bag of PLA 4042D by Convex Plastics Ltd. in New Zealand for research purposes.

Synthesis

Line: 19 to 19

See papers in footnote for further details.

Added:
>
>

Use So Far

Vik has been using the PLA filament in New Zealand made from the granules supplied by Convex. This was drawn into a 2.6mm diameter filament for us by Imagine Plastics Ltd. on their equipment used to make plastic welding rod and knitting needles.

Rod diameter is 2.6mm+-0.1mm . The plastic tends to absorb atmospheric water which can cause small bubbles on extrusion. It is slightly flexible and transparent. It will not degrade outside of a commercial composting pit. It has a density of 1.04

The standard yellow gear motor will not reliably feed the filament through a Mk 2 Extruder. A more powerful motor needs to be fitted to the gearbox.


Papers etc

  • kim-23-2-6-98033.pdf: Synthesis, Characterization and in Vitro Degradation of Poly(DL-Lactide)/Poly(DL-Lactide-co-Glycolide) Films.
 <<O>>  Difference Topic PLA (r1.7 - 24 Apr 2007 - FernandoMuniz)
Changed:
<
<
META TOPICPARENT ThermoPlastic?
>
>
META TOPICPARENT PrintingMaterials

PLA

Polylactic acid (PLA) is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as maize. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.

 <<O>>  Difference Topic PLA (r1.6 - 17 Nov 2006 - VikOlliver)
META TOPICPARENT ThermoPlastic?

PLA

Line: 13 to 13

???

Added:
>
>

Synthesis

A crude form of PLA can be produced by simply heating powdered lactic acid with powdered stannous chloride - commonly used in pottery glazes - in a test tube. Extracting it from the test tube afterwards is left as an excercise for the diligent student.

See papers in footnote for further details.


Papers etc

  • kim-23-2-6-98033.pdf: Synthesis, Characterization and in Vitro Degradation of Poly(DL-Lactide)/Poly(DL-Lactide-co-Glycolide) Films.
 <<O>>  Difference Topic PLA (r1.5 - 05 Oct 2006 - SebastienBailard)
META TOPICPARENT ThermoPlastic?

PLA

Changed:
<
<		 PLA is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as maize. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.
>
>		 Polylactic acid (PLA) is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as maize. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.

It is harder then PTFE and melts at a lower temperature (around 170°C to 210°C), so is potentially a very useful material. It does exhibit higher friction than PTFE however.

 <<O>>  Difference Topic PLA (r1.4 - 20 Jan 2006 - VikOlliver)
META TOPICPARENT ThermoPlastic?

PLA

Changed:
<
<		 PLA is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as Corn. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.
>
>		 PLA is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as maize. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.

It is harder then PTFE and melts at a lower temperature (around 170°C to 210°C), so is potentially a very useful material. It does exhibit higher friction than PTFE however.

 <<O>>  Difference Topic PLA (r1.3 - 19 Jan 2006 - VikOlliver)
META TOPICPARENT ThermoPlastic?

PLA

Changed:
<
<		 PLA is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as Corn. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.
>
>		 PLA is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as Corn. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.

It is harder then PTFE and melts at a lower temperature (around 170°C to 210°C), so is potentially a very useful material. It does exhibit higher friction than PTFE however.

 <<O>>  Difference Topic PLA (r1.2 - 18 Jan 2006 - AdrianBowyer)
META TOPICPARENT ThermoPlastic?

PLA

Line: 22 to 22

  • Stereoselective Ring-Opening Polymerization of meso-Lactide: Synthesis of Syndiotactic Poly(lactic acid) Page 1, Page 2, Addendum
Added:
>
>


META FILEATTACHMENT kim-23-2-6-98033.pdf attr="h" comment="Synthesis, Characterization and in Vitro Degradation of Poly(DL-Lactide)/Poly(DL-Lactide-co-Glycolide) Films" date="1129190777" path="kim-23-2-6-98033.pdf" size="123264" user="SimonMcAuliffe" version="1.1"
META FILEATTACHMENT v30_327_334.pdf attr="h" comment="Synthesis and Characterization of Poly(L-lactide-co-ε-caprolactone) Copolymers: Effects of Stannous Octoate Initiator and Diethylene Glycol Coinitiator Concentrations" date="1129190912" path="v30_327_334.pdf" size="182889" user="SimonMcAuliffe" version="1.1"
META FILEATTACHMENT DiscreteYttriumComplexesasLactidePolymerizationCatalysts?.pdf attr="h" comment="Discrete Yttrium(III) Complexes as Lactide Polymerization Catalysts" date="1129190989" path="Discrete Yttrium Complexes as Lactide Polymerization Catalysts.pdf" size="70862" user="SimonMcAuliffe" version="1.1"
 <<O>>  Difference Topic PLA (r1.1 - 13 Oct 2005 - SimonMcAuliffe)
Line: 1 to 1
Added:
>
>
META TOPICPARENT ThermoPlastic?

PLA

PLA is a bio-degradable polymer that can be produced from lactic acid, which can be fermented from crops such as Corn. This makes it an ideal candidate for use in certain energy rich, cash poor areas of the world.

It is harder then PTFE and melts at a lower temperature (around 170°C to 210°C), so is potentially a very useful material. It does exhibit higher friction than PTFE however.

For more details, see the Wikipedia entry on Polylactic acid

Availability

???

Papers etc

  • kim-23-2-6-98033.pdf: Synthesis, Characterization and in Vitro Degradation of Poly(DL-Lactide)/Poly(DL-Lactide-co-Glycolide) Films.

  • v30_327_334.pdf: Synthesis and Characterization of Poly(L-lactide-co-ε-caprolactone) Copolymers: Effects of Stannous Octoate Initiator and Diethylene Glycol Coinitiator Concentrations

  • Stereoselective Ring-Opening Polymerization of meso-Lactide: Synthesis of Syndiotactic Poly(lactic acid) Page 1, Page 2, Addendum

META FILEATTACHMENT kim-23-2-6-98033.pdf attr="h" comment="Synthesis, Characterization and in Vitro Degradation of Poly(DL-Lactide)/Poly(DL-Lactide-co-Glycolide) Films" date="1129190777" path="kim-23-2-6-98033.pdf" size="123264" user="SimonMcAuliffe" version="1.1"
META FILEATTACHMENT v30_327_334.pdf attr="h" comment="Synthesis and Characterization of Poly(L-lactide-co-ε-caprolactone) Copolymers: Effects of Stannous Octoate Initiator and Diethylene Glycol Coinitiator Concentrations" date="1129190912" path="v30_327_334.pdf" size="182889" user="SimonMcAuliffe" version="1.1"
META FILEATTACHMENT DiscreteYttriumComplexesasLactidePolymerizationCatalysts?.pdf attr="h" comment="Discrete Yttrium(III) Complexes as Lactide Polymerization Catalysts" date="1129190989" path="Discrete Yttrium Complexes as Lactide Polymerization Catalysts.pdf" size="70862" user="SimonMcAuliffe" version="1.1"
META FILEATTACHMENT jamchemsci-121-4072.jpg attr="h" comment="Stereoselective Ring-Opening Polymerization of meso-Lactide: Synthesis of Syndiotactic Poly(lastic acid)" date="1129191219" path="jamchemsci-121-4072.jpg" size="120431" user="SimonMcAuliffe" version="1.1"
META FILEATTACHMENT jamchemsci-121-4073.jpg attr="h" comment="Stereoselective Ring-Opening Polymerization of meso-Lactide: Synthesis of Syndiotactic Poly(lastic acid), Page 2" date="1129191392" path="jamchemsci-121-4073.jpg" size="83921" user="SimonMcAuliffe" version="1.1"
META FILEATTACHMENT jamchemsci-121-4072-addendum.pdf attr="h" comment="Stereoselective Ring-Opening Polymerization of meso-Lactide: Synthesis of Syndiotactic Poly(lastic acid), addendum" date="1129191561" path="jamchemsci-121-4072-addendum.pdf" size="598201" user="SimonMcAuliffe" version="1.1"
View topic | Diffs | r1.8 | > | r1.7 | > | r1.6 | More
Revision r1.1 - 13 Oct 2005 - 07:51 - SimonMcAuliffe
Revision r1.8 - 05 Oct 2007 - 01:39 - VikOlliver