1. bookVolume 4 (2021): Issue 2 (October 2021)
Journal Details
License
Format
Journal
First Published
30 Jan 2019
Publication timeframe
2 times per year
Languages
English
access type Open Access

Development of Pneumatic Deformability Test of Polylactic Acid Films

Published Online: 28 Oct 2021
Page range: 87 - 92
Journal Details
License
Format
Journal
First Published
30 Jan 2019
Publication timeframe
2 times per year
Languages
English
Abstract

The aim of the present study is to develop a test method suitable for modelling thermoforming processes and which provides an index that accurately characterises the thermoformability of a film or sheet at a given temperature and pressure. For this purpose, the elevated temperature pneumatic deformability test was considered to be the most suitable. During the test, the film is blown until it tears, which takes only a few seconds. We recorded blowing during the test, and used the images to determine the ascent (k) of the specimens and approach the estimated surface of the deformed specimens with a sphere.

Keywords

[1] Gere D., Czigany T.: Future trends of plastic bottle recycling: Compatibilization of PET and PLA. Polymer Testing, 81. (2020) 106160. https://doi.org/10.1016/j.polymertest-ing.2019.106160 Search in Google Scholar

[2] Józó M., Cui L., Bocz K., Pukánszky B.: Processing induced segregation in PLA/TPS blends: Factors and consequences. eXPRESS Polymer Letters, 14/8. (2020) 768–779. https://doi.org/10.3144/expresspolymlett.2020.6310.3144/expresspolymlett.2020.63 Search in Google Scholar

[3] Singh S., Santana-Pérez O., Rodriguez C., Oksman K., Maspoch M. L.: Mechanical behaviour of poly(-lactic acid)/cellulose nanocrystal nanocomposites: A comparative study between conventional tensile test and small punch test. eXPRESS Polymer Letters, 14/12. (2020) 1127–1136. https://doi.org/10.3144/expresspolymlett.2020.9210.3144/expresspolymlett.2020.92 Search in Google Scholar

[4] Hajba S., Tábi T.: Cross effect of natural rubber and annealing on the properties of poly(lactic acid). Periodica Polytechnica Mechanical Engineering, 63/4. (2019) 270–277. https://doi.org/10.3311/PPme.1282510.3311/PPme.12825 Search in Google Scholar

[5] Pölöskei K., Csézi G., Hajba S., Tábi T.: Investigation of the thermoformability of various D-Lactide content poly(lactic acid) films by ball burst test. Polymer Engineering and Science, 60. (2020) 1266–1277. https://doi.org/10.1002/pen.2537810.1002/pen.25378 Search in Google Scholar

[6] Schwarzmann P., Illig: Thermoforming. 2. kiadás. Carl Hanser Verlag, München, 2019. 1–495.10.3139/9781569907092.001 Search in Google Scholar

[7] Ashter A.: Thermoforming of single and multilayer laminates. Plastic films technologies, testing, and applications. 1. kiadás. Elsevier, Oxford, 2014. 1–352.10.1016/B978-1-4557-3172-5.00001-3 Search in Google Scholar

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