A theoretical model of gas permeation in polydimethylsiloxane (PDMS) is conducted for two prior works involving MEMS sensors and actuators. The issue for modeling a sensor is about using PDMS slabs to replace Pyrex glass as the packaging substrate for bulk-micromachined pressure sensors. The leakage pressure due to gas permeation in PDMS reveals the time-varying behavior of exponential decay. T...

Brittleness and other properties such as low thermal stability, medium gas barrier properties and low solvent resistance (e.g., against water) of the pure biopolymer film are often insufficient for food packaging applications. The nanoscale distribution of nanoclays (such as montmorillonite, saponite or hectorite), with a high aspect ratio (100-1,500) and extremely high surface-to-volume ratio ...

Objectives: The aim of this study was to identify active ingredients present in counterfeit drugs and pharmaceutical preparations seized from the black market among bodybuilders. Preparations in closed or sealed packaging with different batch numbers (n = 74) and two preparations without labels were analyzed. Methods: The identification scheme was based on reversed-phase liquid chromatography w...

The regulation process of gas distribution systems for atmosphere packaging has the characteristics being nonlinear time varying and having hysteric delay. When conventional proportional-integral-derivative (PID) control algorithm is applied to this kind system, it difficult set parameters as consuming poor reliability. For these reasons, paper designs a system fresh food based on fuzzy PID con...

Gas in scattering media absorption spectroscopy (GASMAS) has been extensively studied and applied during recent years in, e.g., food packaging, human sinus monitoring, gas diffusion studies, and pharmaceutical tablet characterization. The focus has been on the evaluation of the gas absorption pathlength in porous media, which a priori is unknown due to heavy light scattering. In this paper, thr...

Polysaccharides constitute an important source of raw materials for the packaging industry today. Polysaccharides have good natural barrier properties which are necessary for packaging films. Cellulose is the forerunner among renewable polymers for such applications. Hemicelluloses represent a new interesting breed of barrier materials. We have chosen to work with the hemicellulose O-acetylgala...

Aluminium foil is a thin material made of aluminum metal used for packaging. has good properties packaging food products, including hermetic, flexible, opaque, impervious to moisture and water, non-flammable, does not absorb other materials or substances. Widely, aluminium as coating, especially which must be protected from gas, moisture, odors, light so that it can better maintain the durabili...

Spoilage of food is a worldwide concern because poor faulty packaging material. Today the evolution nanotechnology in industry provides several benefits preservation, processing, and packaging. Nano has found many applications industry. such as oxygen (O2) scavengers, moisture antimicrobial, gas barrier properties, strength, flexibility, keeping an eye on freshness, etc. These nanomaterials hel...