Men resanblans ak diferans ki genyen ant PVC (Klori polivinil) epi PVDC (Klori polivinilidèn):

Resanblans:

1. Konpozisyon chimik: Tou de PVC and PVDC are thermoplastic polymers that contain chlorine in their chemical structure.
2. Pwopriyete Baryè: Both materials exhibit good barrier properties against moisture, oksijèn, ak lòt gaz, making them suitable for packaging applications.
3. Transparans: Both PVC and PVDC can be manufactured in transparent forms, allowing visibility of the packaged contents.
4. Processability: Both materials can be easily processed through various techniques such as extrusion, bòdi piki, and calendaring.

Diferans:

1. Chemical Structure: PVC is a vinyl polymer with a repeating unit of CH2=CHCl, while PVDC is a vinylidene chloride polymer with a repeating unit of CH2=CCl2.
2. Pèfòmans baryè: PVDC has superior barrier properties compared to PVC. PVDC films provide excellent moisture and gas barrier, ofri pi bon pwoteksyon pou pwodwi sansib tankou pharmaceutique ak manje ki ka gate.
3. Estabilite tèmik: PVDC gen pi wo estabilite tèmik pase PVC. Li ka kenbe tèt ak pi wo tanperati san yo pa sibi degradasyon enpòtan.
4. Pri: PVC se jeneralman mwens chè konpare ak PVDC, fè li pi lajman itilize nan plizyè aplikasyon, ki gen ladan tiyo, câbles, ak kèk aplikasyon anbalaj.
5. Enpak anviwònman an: PVC te asosye ak enkyetid anviwònman akòz liberasyon klò ak dioxins pandan pwodiksyon ak jete. PVDC konsidere kòm pi zanmitay anviwònman an paske li pa lage klò oswa dioxin pandan sik lavi li.

Li enpòtan sonje ke PVC ak PVDC gen pwopriyete diferan epi yo adapte pou aplikasyon diferan. PVDC yo souvan itilize nan aplikasyon anbalaj segondè-baryè kote pwopriyete baryè siperyè yo mande yo, pandan y ap PVC jwenn aplikasyon nan yon pakèt domèn endistri akòz adaptabilite li yo ak pri-efikasite.