The product is High Quality poly(d,l - lactide) with the CAS number 51056 - 13 - 9. Poly(d,l - lactide) is a biodegradable and biocompatible polymer. It is derived from lactic acid, a natural occurring organic acid. The high - quality aspect ensures consistent performance and reliable results in various applications.
The molecular weight of poly(d,l - lactide) can vary depending on the manufacturing process. Typically, it has a good solubility in common organic solvents such as chloroform, dichloromethane, and tetrahydrofuran. The polymer has a glass - transition temperature (Tg) in the range of 45 - 60°C, which affects its physical properties and processing behavior.
Poly(d,l - lactide) has a wide range of uses in different industries. In the medical field, it is commonly used for drug delivery systems. Its biodegradable nature allows for the controlled release of drugs over a specific period. For example, it can be formulated into microspheres or nanoparticles that encapsulate drugs, protecting them from degradation and enabling targeted delivery to specific tissues or cells.
In tissue engineering, poly(d,l - lactide) serves as a scaffold material. It provides a three - dimensional structure for cells to attach, grow, and differentiate. The biodegradability of the polymer ensures that as the tissue regenerates, the scaffold gradually degrades, eliminating the need for surgical removal.
It is also used in the packaging industry. Its biocompatibility and biodegradability make it an environmentally friendly alternative to traditional plastics. It can be used to make packaging films, trays, and containers for food and other consumer products.
When using poly(d,l - lactide) for drug delivery, first, the polymer needs to be dissolved in an appropriate organic solvent. The drug is then added to the polymer solution, and the mixture is processed to form the desired delivery system, such as microspheres or nanoparticles. This can be achieved through methods like emulsion - solvent evaporation or spray - drying.
For tissue engineering applications, the polymer can be fabricated into scaffolds using techniques such as electrospinning or 3D printing. The scaffolds need to be sterilized before cell seeding. Cells can be cultured on the scaffolds in a suitable culture medium to promote tissue growth.
In the packaging industry, poly(d,l - lactide) can be processed using conventional plastic - processing methods such as injection molding or extrusion. The processed products should be stored in a dry and cool environment to maintain their quality.
Medical Drug Delivery Case: A pharmaceutical company was developing a new anti - cancer drug. They used poly(d,l - lactide) to encapsulate the drug into nanoparticles. The nanoparticles were injected into the bloodstream of cancer - bearing mice. Due to the controlled - release property of the poly(d,l - lactide) nanoparticles, the drug was continuously released over a two - week period, effectively reducing the tumor size without causing significant side effects.
Tissue Engineering Case: A research team was working on a project to repair damaged cartilage. They fabricated poly(d,l - lactide) scaffolds using 3D printing technology. Chondrocytes were seeded on the scaffolds and cultured in a bioreactor. After four weeks of culture, the cells had proliferated and secreted extracellular matrix, indicating successful cartilage regeneration.
Packaging Case: A food company switched from traditional plastic packaging to poly(d,l - lactide) packaging for their snack products. The poly(d,l - lactide) packaging provided good barrier properties to protect the snacks from moisture and oxygen. Moreover, it was biodegradable, which enhanced the company's environmental image and met the increasing consumer demand for sustainable packaging.
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