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Related Concept Videos

Bioplastics01:27

Bioplastics

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Bioplastics derived from microbial processes present a sustainable alternative to conventional petroleum-based plastics. Among these, polyhydroxyalkanoates (PHAs), particularly polyhydroxybutyrates (PHBs), have emerged as prominent candidates due to their biodegradability and biocompatibility. These polymers are synthesized by a variety of bacteria, such as Cupriavidus necator and Pseudomonas putida, which naturally accumulate PHAs as intracellular carbon and energy reserves, especially under...
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Microbial Bioremediation of Plastics01:28

Microbial Bioremediation of Plastics

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Polyethylene terephthalate (PET) is a synthetic polymer widely utilized in the packaging industry, particularly for bottles and containers. Due to its chemical stability and durability, PET accumulates in the environment, contributing significantly to plastic pollution. It comprises repeating units of terephthalic acid and ethylene glycol, resulting in a semi-crystalline structure that is resistant to natural degradation processes.A notable breakthrough in plastic biodegradation came with the...
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The introduction of polyesters has brought major development to the textile industry. The wrinkle-free behavior of polyester blends has eliminated the need for starching and ironing clothes.
Polyesters are commonly prepared from terephthalic acid and ethylene glycol; the crude product is known as poly(ethylene terephthalate) or PET. However, polyesters are synthesized industrially by transesterification of dimethyl terephthalate with ethylene glycol at 150 °C. The two reactants and the...
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Water-reducers, or plasticizers, are chemical admixtures used in concrete to improve strength and workability. These additives reduce the water-cement ratio without compromising workability, lower the cement content while maintaining the same workability, or increase workability to assist concrete placement in inaccessible areas.
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Plastic Behavior01:21

Plastic Behavior

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A material's elastic behavior is characterized by the disappearance of stress once the load is removed, allowing the material to return to its original state. However, when stress surpasses the yield point, yielding commences, marking the onset of plastic deformation or permanent set. This change from elastic to plastic behavior is influenced by the peak stress value and the duration before the load is removed. An intriguing observation occurs when a specimen is loaded, unloaded, and...
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Plastic deformation represents a fundamental concept in materials science, which explains the irreversible change in the shape of a material when it experiences stress beyond its elastic capability. This phenomenon is important in structural engineering, especially in designing and analyzing cantilever beams—structures that are securely fixed at one end and bear loads at the opposite end. When these beams are subjected to loads within their elastic range, they will return to their...
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Related Experiment Video

Updated: Apr 27, 2026

Sampling, Identification and Characterization of Microplastics Release from Polypropylene Baby Feeding Bottle during Daily Use
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Everyday use of plastic.

J Miller1

  • 1Queen Victoria Memorial Hospital, Melbourne.

The Australian Journal of Physiotherapy
|July 16, 2014
PubMed
Summary

This study explored rapid, simple methods for creating custom plastic physiotherapy appliances. Sheet plastics were used for same-day treatment applications, prioritizing affordability and adjustability over long-term durability.

Area of Science:

  • Biomedical Engineering
  • Materials Science

Background:

  • Traditional methods for plastic appliance fabrication are often time-consuming and require specialized facilities.
  • Physiotherapy departments need readily available, adaptable treatment tools.

Purpose of the Study:

  • To develop a simple and quick method for fabricating plastic appliances within a physiotherapy setting.
  • To create cost-effective appliances suitable for same-day use and frequent adjustments during patient recovery.

Main Methods:

  • Utilized sheet plastics, excluding powder-based materials due to associated health and logistical challenges.
  • Focused on methods allowing for immediate application in physiotherapy treatments.

Main Results:

  • Successfully identified and implemented a fabrication process using sheet plastics.

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  • The developed method allows for the production of physiotherapy appliances on the same day they are needed.

    • Conclusions:

    • Sheet plastics offer a viable solution for rapid, on-demand fabrication of physiotherapy appliances.
    • This approach enhances treatment flexibility and patient comfort by allowing frequent adjustments and replacements.