PLA Medical Materials
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PLA has been widely used in suture, bone fixation, repair materials, carrier for slow and controlled release of drugs, tissue engineering cell growth scaffold materials and other fields, and has become one of the important biological materials in the medical field. PLA suture can meet the requirements of suture in strength, and slowly decompose and disappear in the body as the wound heals. Compared with conventional suture, there is no need to remove suture, and it is especially suitable for suture of deep tissue wounds.
PLA can be used as bone fixation material. With the growth of bone, the bone fixation material made by PLA can be decomposed slowly, without the need for a second operation to remove it, so as to avoid the physical pain and surgical costs caused by the second operation. PLA can be used as a carrier for slow and controlled release of drugs, which has the advantages of low toxicity, high efficiency, slow release and long action time, good compatibility with organisms, long residence time, and can also adopt the way of copolymerization with other monomers to regulate the release rate of drugs, so as to improve the activity of drugs and reduce the toxicity and side effects brought to the body.
PLA can be used as tissue engineering scaffold material. By culture cells on the PLA scaffold, the cells slowly grow and differentiate into tissues and organs. At the same time, PLA scaffold material slowly degrades.
PLA, as a new type of pure bio-based material, has a great market application prospect. Its good physical properties and environmental protection of the material itself will definitely make PLA be used more widely in the future.
However, when PLA materials are applied to packaging materials, there are still many properties that need to be further improved, such as degradability, toughness, heat resistance, barrier, electrical conductivity, etc. In addition, the current high raw material prices are also an important factor limiting the extensive use of PLA materials. It is necessary to further optimize the PLA production process, reduce material costs and improve its competitiveness as packaging materials.
