Model PMMA (Acrylic) - MR - Observation Minirhizotron Tubes
From MR Tubes
Poly(methyl methacrylate) (PMMA), also known as acrylic or acrylic glass as well as by the trade names Crylux, Plexiglas, Acrylite, Lucite, and Perspex among several others, is a transparent thermoplastic often used as a lightweight and shatter-resistant alternative to glass. Its environmental stability (UV and weathering) is superior to most other plastics and PMMA is therefore the material of choice for outdoor applications such as MR tubes.
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Product Details
A review on the influence of MR tube materials on root production and turnover revealed that data from acrylic MR tubes matches standing root biomass more closely than using butyrate MR-T. For both plastics, chemical reactions on the surfaces and the release of small molecular weight chemicals are possible, but probably more common for butyrate (see Withington et al. 2003, New Phytol. for details).
- Material density (ISO 1183): 1.19 g cm-3
- Charpy impact strength (ISO 179-1:2010): 15 kJ m-2
- Izod notch impact strength (ISO 180/1A): 1.6 kJ m-2
- Tensile strength (ISO 527-2/1B/5): 110 MPa (-40°C), 72 MPa (30°C)
- Elongation at break (ISO 527-2/1B/5): 4.5%
- Elastic modulus (short term): 3300 MPa
- Thermal conductivity (DIN 52612): 0.19 W m-1 K-1
- Specific heat coefficient: 1.47 J g-1 K-1
- Max. permanent service temperature: 70°C
- Transmittance (DIN 5036, Part 3): ca. 92 % (
- Refractive index (ISO 489): 1.491
- Maximum weight gain during immersion in water (ISO 62, Method 1): 2.1 wt.%
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