By Sajid Alavi, Sabu Thomas, K. P. Sandeep, Nandakumar Kalarikkal, Jini Varghese, Srinivasarao Yaragalla
This ebook specializes in nutrition, non-food, and commercial packaging functions of polymers, blends, nanostructured fabrics, macro, micro and nanocomposites, and renewable and biodegradable materials. It details physical, thermal, and barrier homes in addition to sustainability, recycling, and regulatory matters. The booklet emphasizes interdisciplinary learn on processing, morphology, constitution, and homes in addition to functions in packaging of foodstuff and commercial items. it really is priceless for chemists, physicists, fabrics scientists, nutrition technologists, and engineers.
Read Online or Download Polymers for Packaging Applications PDF
Similar polymers & textiles books
Electroactive Polymers for Robotic Application: Artificial Muscles and Sensors
Electroactive polymers (EAPs) reply to electric stimulation with huge deformations. they're dynamic actuators that have attracted cognizance from an interdisciplinary viewers of engineers and scientists. An permitting EAP know-how is rising which makes an attempt to mimic the houses of ordinary muscle and which, consequently, can practice a different functionality in quite a few biologically-inspired robotics purposes.
Self-Organized Surfactant Structures
Highlighting fresh advancements in addition to destiny demanding situations, this sequence of volumes covers such themes as emulsions, nano-emulsions, nano-dispersions and novel innovations for his or her research. It additionally considers the basic process in components corresponding to managed unlock, drug supply and diverse functions of nanotechnology.
Thermal Methods of Polymer Analysis
This booklet reports a few of the thermal tools used for the characterisation of polymer homes and composition. most of these equipment examine the houses of polymers as they alter with temperature. The tools mentioned during this publication are: differential photocalorimetry, differential scanning calorimetry, dielectric thermal research, differential thermal research, dynamic mechanical research, developed fuel research, gasoline chromatography, gasoline chromatography mixed with mass spectrometry, mass spectrometry, microthermal research, thermal volatilisation, thermogravimetric research and thermomechanical research.
Extra resources for Polymers for Packaging Applications
Example text
Thus vacuum packaging requires low air permeability films to maintain the vacuum inside the packages. Vacuum packaging is especially used to create barrier for atmospheric oxygen, which results in prevention of enzymatic reaction and bacterial spoilage (Cánovas, 2003). Due to respiration of packaged food, the trapped oxygen during vacuum packaging will convert to carbon dioxide, which will inhibit the growth of microbes. Flexible packaging materials are suitable for vacuum packaging, as the pressure difference inside and outside the package may cause the package to collapse if rigid packaging material is used.
In the case of PP copolymer, a co-monomer such as ethylene is also used. An organometallic catalyst is used, which attaches to propylene, works as functional group and reacts with the unsaturated bond of propylene (or with other co-monomer in case of copolymerization) to form a long chain polymer (Maier and Calafut, 1998). PROPERTIES Polypropylene is a low cost plastic, having a density between LDPE and HDPE, but possessing higher thermal resistance due to the presence of a methyl group in the main chain.
Chitosan is biodegradable, biocompatible, and non-toxic. Clear, tough, flexible films having good oxygen barrier properties can be cast from chitosan without the use of any additives (Cutter, 2006). , 2004). , 1996). 4 PROTEINS Proteins are biopolymers comprised of long chains of amino acids. The barrier properties of proteins are determined by the polar characteristics of protein films. , 2011). , 2002). , 2006). Casein and gluten are two major protein based materials, which exhibit properties favorable for food packaging.