[Analysis Case] Characterization of Biodegradable Plastics (PLA) by Thermal Analysis
Using PLA beverage cups as measurement samples, thermal and mechanical properties were investigated utilizing thermal analysis techniques such as temperature-modulated DSC and DMA!
As the industrial sector has begun to focus more on developing and manufacturing environmentally friendly products, various new biodegradable polymers have been adopted. Poly(Lactic Acid) (PLA) is a biodegradable aliphatic polyester produced from lactic acid obtained through the saccharification and fermentation of starch. Due to its high mechanical strength comparable to PETE and good biocompatibility, PLA has been commonly used in biomedical applications such as sutures and stents, but the expansion of PLA's applications is being considered. Understanding the properties of PLA is essential for the development of new applications. We present materials that investigate the thermal and mechanical properties of PLA-based beverage cups using temperature-modulated DSC and DMA. *Please download the materials.
basic information
◆Discovery DSC Differential Scanning Calorimeter Measures temperature transitions in materials along with associated thermal temperature and heat flow. Common applications include investigation, selection, comparison, and final performance evaluation of materials in research, quality control, and manufacturing. Characteristics measured by TA Instruments' DSC technology include glass transition, "cold" crystallization, phase changes, melting, crystallization, product stability, curing/cure reaction rates, and oxidation stability. ◆Discovery DMA Dynamic Mechanical Analyzer Measures the mechanical properties of materials as a function of time, temperature, and frequency. In addition to basic material properties, DMA quantifies finishing characteristics and reflects the significant contributions of processing to final performance. DMA is commonly used to measure glass transition temperature and secondary transitions, orientation induced by processing, cold crystallization, curing optimization, and filler effects in composites. DMA not only provides an accurate measure of material stiffness (modulus) but also offers insights into other important mechanical properties such as damping, creep, and stress relaxation.
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Model number/Brand name
Discovery DSC / Discovery DMA
Applications/Examples of results
Application Examples - Glass transition temperature (Tg) / crystallization over time and temperature / melting point / crystallization rate / heat of fusion / specific heat / oxidation stability / curing rate / reaction analysis / purity thermal stability - Component analysis / thermal stability and oxidation stability / lifetime / decomposition rate reaction analysis / reaction effects with atmospheric gases / quantification of moisture and volatile components / boiling point - Evaluation of substrates and coating materials / evaluation of laminate phases / relationship between resins or elastomers and fillers / functional evaluation of sealing materials and sealing compounds - Elastic modulus / α, β, γ transitions / curing and curing rate / viscosity / damping characteristics of polymer morphology / creep characteristics / stress relaxation
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★ Online Seminar on Protein Calorimetry & Antibody Engineering ★ We will be holding an online seminar on "Antibody Engineering." We are pleased to welcome Dr. Nagamori from the University of Tokyo's Institute of Medical Science, who will present cutting-edge information on protein calorimetry and antibody engineering research. Additionally, we will provide information on instruments such as isothermal titration calorimeters (ITC) and differential scanning calorimeters (DSC) for biomacromolecules, and our group company Waters will introduce HPLC and UPLC technologies specialized for antibody analysis. Please feel free to join from your home or workplace. 【Participation Tool】Zoom *You can also participate via a web browser. (Participation is possible without downloading the Zoom application) Participation Fee: Free *Due to software specifications, there is a limit on the number of participants. Please register early. For details on the content and registration, please refer to the detailed page. We will notify you of the course details via email one week before the event.
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★ Co-hosted by TA Instruments & iPhase ★ Online LIVE Seminar - Considering Thermal Diffusion, Thermal Conductivity, Thermal Analysis, and Viscoelastic Measurement of Materials - Thank you for your continued support. This time, TA Instruments and iPhase Co., Ltd. will jointly hold an online seminar titled "Considering Thermal Diffusion, Thermal Conductivity, Thermal Analysis, and Viscoelastic Measurement of Materials." Mr. Hashimoto, the representative of iPhase, will present a live demonstration measuring films, bulk materials, and liquids using thermal conductivity and thermal diffusion measurement devices. Please feel free to participate from your home or workplace. Participation Tool: Microsoft Teams Participation Fee: Free *Due to software specifications, there is a limit on the number of participants. Please apply early. (For those who applied but could not participate due to the limit, we will send a video of the seminar and a priority invitation email for the next session at a later date.) For details on the content and application, please see the detailed page. We will also notify you of the course details via email one week before the event.
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