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  6. [Analysis Case] Characterization of Biodegradable Plastics (PLA) by Thermal Analysis

[Analysis Case] Characterization of Biodegradable Plastics (PLA) by Thermal Analysis

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Discovery DSC / Discovery DMA

last updated:Jul 10, 2025

TA Instruments Japan  (TAInstruments)
TA Instruments Japan (TAInstruments)
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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.

    Analytical Equipment and Devices
PLA.jpg

[Analysis Case] Characterization of Biodegradable Plastics (PLA) by Thermal Analysis

PLA.jpg
PLA.jpg
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◆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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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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[Analysis Case] Characterization of Biodegradable Plastic Polylactic Acid (PLA) by Thermal Analysis

[Analysis Case] Characterization of Biodegradable Plastic Polylactic Acid (PLA) by Thermal Analysis

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*Application Closed* April Online LIVE Seminar Held! ~Battery Seminar~

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On April 2nd (Friday), we will start an online seminar on batteries, inviting Mr. Yoshiyasu Saito from the National Institute of Advanced Industrial Science and Technology, Energy and Environment Division, Energy Conservation Research Department. We hope you find it useful for your research and development of batteries. Additionally, there will be a presentation from our group company, Japan Waters. We look forward to your applications. 【Participation Tool】Zoom *You can also participate via a web browser. (Participation is possible without downloading the Zoom application) Participation fee: Free Please refer to the detailed page for content and application information. We will notify you of the participation details via email one week before the event. Mr. Yoshiyasu Saito, National Institute of Advanced Industrial Science and Technology 【Title】Utilization of Thermal Measurement and Thermal Analysis in Research and Development of Lithium-Ion Batteries Others

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*Application Closed* February Online LIVE Seminar Held! ~Pharmaceutical Seminar~

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★ Announcement of Online Seminar on Pharmaceuticals to be Held on February 10 ★ On February 10, we will hold a seminar on the analysis and evaluation of pharmaceuticals, featuring Dr. Kawakami from the National Institute for Materials Science (Group Leader/Chief Researcher of the Medical Application Soft Matter Group, also a Professor in the Graduate School of Pure and Applied Sciences at Tsukuba University). Additionally, there will be a presentation from our group company, Waters Japan. We look forward to your applications. 【Participation Tool】Zoom *You can also participate via a web browser. (Participation is possible without downloading the Zoom application) Participation Fee: Free Please refer to the detailed page for content and application information. We will notify you of the participation details via email one week before the event. Dr. Wataru Kawakami, National Institute for Materials Science [Title] Thermal Analysis Equipment as a Research Tool for Pharmaceuticals: Advanced Utilization Beyond Mere Evaluation Methods Others

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*Application Closed* July Online LIVE Seminar Held! ~Protein Analysis~

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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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*Fully Booked* Online LIVE Seminar in June! ~Thermal Analysis~

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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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TA Instruments Japan (TAInstruments)

Testing, Analysis and Measurement

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TA Instruments Japan is a wholly-owned subsidiary of TA Instruments in Japan. We sell and provide maintenance support for thermal analysis, rheology, microcalorimeters, and mechanical analysis equipment, conduct demonstration measurements, and hold technical seminars, offering the latest information on materials and engaging in the development of measurement technologies for materials. 【Main Equipment Handled】 ☆ Thermal Analysis / Differential Scanning Calorimeter (DSC), Thermogravimetric Analyzer (TGA), Simultaneous Differential Thermal Analysis (SDT/TG-DTA), Vapor Adsorption/Desorption Analyzer (Q5000SA) ☆ Viscoelastic Measurement (Rheology) / Rotational Rheometer (DHR・ARES), Dynamic Mechanical Analyzer (RSA・DMA・EF3200), Rubber Testing Cure Meter (RPA) ☆ Microcalorimetry / Isothermal Titration Calorimeter (ITC), Microcalorimeter (NanoDSC), Isothermal Calorimeter (TAM) ☆ Thermal Property Measurement Equipment / Thermal Conductivity Meter (DTC・FOX), Thermal Diffusivity Meter (DLF, DXF), Thermal Expansion Meter (TMA, DIL), Optical Thermal Expansion Meter (ODP, HM) ☆ Fatigue Testing Machines / ElectroForce Series, BioDynamic Series

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