Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Evaluating the Barrier Performance of Protein-Based Films Protein-based films, derived from sources like whey, soy, and gelatin, are emerging as promising sustainable alternatives to traditional petroleum-based plastics. Their biodegradability, edibility (in some cases), and potential for tailored functionalities make them attractive for various applications, particularly in food packaging and biomedicine. These films must undergo rigorous testing to ensure they effectively perform their intended roles. A crucial aspect of this evaluation lies in assessing their barrier properties. Protein films are designed to fulfill diverse functionalities. In food packaging, they aim to extend shelf life by preventing moisture loss, oxidation, and microbial growth. In biomedical applications, they might serve as drug delivery systems or wound dressings, requiring biocompatibility and controlled release capabilities. These functionalities depend heavily on the film's ability to act as a barrier against various substances.
Open the catalog to page 1Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 Barrier properties refer to a film's ability to impede the passage of different molecules. Essential barrier tests include evaluating water vapor permeability (WVP), oxygen permeability (OP), and sometimes permeability to other gases and aromas. WVP measures the rate at which water vapor travels through the film. This is vital for maintaining the desired moisture content of packaged goods. The gravimetric method, a common WVP test, involves measuring the weight gain of a desiccant placed beneath the film in a controlled humidity...
Open the catalog to page 2Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 transmission rate of barrier materials with high, medium and lower moisture barrier properties with a wide testing range and high testing efficiency. The instrument features Labthink’s patented test chamber design with multiple test dishes. C360H is equipped with precision made test dishes, highly accurate balance, embedded professional software which supports automatic controlling of temperature, humidity and flow rate precisely and guarantees the testing sensitivity and repeatability of the test results. C360H is applicable to...
Open the catalog to page 3Labthink Instruments Co., Ltd. [email protected] +86-531-85068566 These tests are significant because they directly correlate with the film's performance in real-world applications. A high WVP in a food package could lead to spoilage, while a high OP could compromise the quality and safety of oxygen-sensitive products. By rigorously testing these barrier properties, researchers and manufacturers can optimize proteinbased film formulations and processing methods to create effective, sustainable packaging and biomedical solutions. As the demand for functional packaging grows, testing methods are...
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