L-polylactic acid on the human body has high level of security

Currently polylactic acid has been used in the packaging industry, the pharmaceutical industry and the textile industry. In respect of textile fibers
There are still some restrictions apply. Is more widely used in medicine, in particular Lactic acid Acid high safety to humans, and may be tissue absorption. In recent years, there are a variety of instruments with Put markets, such as surgical sutures, drug delivery formulations and fracture fixation materials. Different users Way, the need for different properties of polylactic acid. Molecular weight is one of important properties, such as molecular weight in
1.5 × 104 ~ 5.0 × 104, is used as adhesive or drug release; 5.0 × 104 ~
10 × 104, can be prepared by film; 12 × 104 ~ 22 × 104, suitable for textile fibers; as bone Fixing material, you need 500,000 or more. Of course, control its thermal properties, molecular weight distribution And purity, is sometimes necessary to control a percentage of D-type and L-type magnessium lactate or a copolymer.
In addition, the use of high-purity L-lactic acid as a raw material, to obtain high optical purity lactide, the open Polymerization can be obtained as pharmaceutical materials such as poly lactic acid.