Medisinale PVC (Polyvinyl chloride) en PVDC (Polyvinylidenchloride) are both commonly used materials in the pharmaceutical industry for packaging purposes. While they have some similarities, there are significant differences between the two:

Gearstalling:

Medisinale PVC: It is a thermoplastic polymer composed primarily of vinyl chloride monomers. Additional additives are incorporated to enhance its properties such as flexibility, impact resistance, en stabiliteit.
PVDC: It is a thermoplastic polymer composed primarily of vinylidene chloride monomers. PVDC is a copolymer of vinylidene chloride and other monomers, typically containing a small percentage of vinyl chloride.
Barriêre eigenskippen:

Medisinale PVC: PVC offers moderate barrier properties against moisture, soerstof, en oare gassen. It provides sufficient protection for most pharmaceutical products but may not be as effective for highly sensitive or moisture-sensitive formulations.
PVDC: PVDC is known for its excellent barrier properties. It biedt in útsûnderlike barriêre tsjin focht, soerstof, ljocht, en oare gassen. PVDC-coated films of laminaten biede superieure beskerming om de stabiliteit en langstme fan farmaseutyske produkten te garandearjen.
Transparânsje:

Medisinale PVC: PVC is algemien transparant, wêrtroch fisuele ynspeksje fan 'e ynhâld yn' e ferpakking mooglik is.
PVDC: PVDC-films as coating binne heul transparant, it bieden fan poerbêste dúdlikens en sichtberens fan it ferpakte produkt.
Gemyske ferset:

Medisinale PVC: PVC is resistint foar in protte gewoane gemikaliën en hat goede wjerstân tsjin oaljes, Fats, en alkoholen. Lykwols, it kin net ferienichber wêze mei bepaalde solvents of agressive gemikaliën.
PVDC: PVDC toant hege gemyske ferset en is kompatibel mei in breder oanbod fan oplosmiddels en gemikaliën yn ferliking mei PVC.
Termyske stabiliteit:

Medisinale PVC: PVC hat goede termyske stabiliteit en kin fernear in breed temperatuer berik by ferwurking en opslach.
PVDC: PVDC hat poerbêste termyske stabiliteit, allowing it to maintain its barrier properties even under high-temperature conditions.
Regulatory Considerations:

Medisinale PVC: PVC is widely accepted and approved for pharmaceutical packaging applications. Lykwols, concerns have been raised about the potential leaching of plasticizers (bgl., DEHP) from PVC, especially in certain medical applications.
PVDC: PVDC is generally considered to be a safe and effective barrier material for pharmaceutical packaging. It is often used in applications where enhanced barrier properties are required.
It’s important to note that the specific properties and formulations of medicinal PVC and PVDC can vary depending on the manufacturer and the intended application. Regulatory guidelines and requirements may also dictate the choice of material for pharmaceutical packaging.