Polylactic plastic

Bio-based materials are materials that are taken from or made from natural materials in living things. Examples include packing pellets made from corn and soybeans, polylactic acid (a polymer used to make plastic packaging), and various kinds of pharmaceuticals. 

Al-Mulla, E.A.J., Yimus, W.MZ., Ibrahim, N.A. and Abdul Rahman MZ. 2010b. Properties of epoxidized palm oil plasticized polylactic acid. Journal of Materisls Science 45 ... 

Sinclair, R.G. 1996. The case for polylactic acid as a commodity packaging plastic. Journal of Macromolecular Science Pure and Applied Chemistry 33 585-97. 

Polylactic acid (PLA) is a biodegradable polymer derived from lactic acid. It is a highly versatile material and is made from 100% renewable resources like corn, sugar beet, wheat and other starch-rich products. Polylactic acid exhibits many properties that are equivalent to or better than many petroleum-based plastics, which makes it suitable for a variety of applications. 

The major classes of biopolymer, starch and starch blends, polylactic acid (PLA) and aliphatic-aromatic co-polyesters, are now being used in a wide variety of niche applications, particularly for manufacture of rigid and flexible packaging, bags and sacks and foodservice products. However, market volumes for biopolymers remain extremely low compared with standard petrochemical-based plastics. For example, biopolymer consumption accounted for just 0.14% of total thermoplastics consumption in Western Europe for 2005. 

Plastic additives manufacturer, Clariant, is running field tests with packaging converters using polylactic acid polymers for its CESA-extend masterbatch. The aim of the new additive is to improve... 

Polylactic acid Biodegradable polyester used in degradable plastic products. 

Povidone can also be used as a hydrophilic component or pore former in preparations that contain sustained-release auxiliaries like polyvinyl acetate, cellulose derivatives like HPMC [490, 509, 660], alginate [461], cetylacohol [600], polylactic acid [5o6],Gelucire [510],polyvinyl alcohol [522],ceresine wax [523], stearic acid [606] or methacrylate copolymers [491] to control or regulate the release of active substances, as binders and/or sometimes as plasticizers. They can also be extruded together with the active substance in melted stearyl alcohol and filled into hard gelatin capsules to achieve the same effect [471]. Ocular delivery systems are also described [598]. 

Scientists are making biodegradable plastic from garbage. Lactic add can be prepared from potato peels or whey. The lactic acid can then be polymerized to produce the plastic polylactic add, which can be broken down by microorganisms. 

Plasticized polylactic or a lactic flexible and hydrolyzable materials, useful for Morita et al., 1993... 

E. Tweed, H. Stephens, and T. Riegert, Polylactic acid blown film and method of manufacturing same, US 7,615,183, assigned to Plastic Suppliers, Inc. (Columbus, OH) 2009. 

The most advanced and ecologically friendly method of disposal of inhibited refuse is considered to be the use of self-destructive inhibited plastics with regulated lifetime. For example, Cortec Corp. has developed biodegradable resin products that are inhibited by VCI consisting essentially of a polymeric resin of PE, starch and polyesters, such as polylactic acid or other suitable polyesters [32]. 

One of these products, polylactic add, has become the basis of one of the best recent commercial illustrations of the potential value of this approach. CargiU-Dow now manufacture polylactic acid polymer materials using a starch feedstock. The materials are finding widespread use as versatile, sustainable, and (importantly) biodegradable alternatives to petro-plastics. [14, 26]. 

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