Abstract:
Preparation of transparent natural rubber film by addition of carboxy methyl cellulose (CMC) into radiation vulcanized natural rubber latex (RVNRL) was conducted. The purpose is aimed at fabrication of transparent dipped products and rubber medical devices from RVNRL. Controlled molecular weight of CMC was added into RVNRL which subsequently centrifuged to remove non-rubber parts with CMC from RVNRL. The transparency of rubber films was done using UV–VIS–NIR spectrophotometer by measuring light transmittance of 330 nm passing through rubber films. The results revealed that most transparent rubber films were achieved by addition of CMC which has been gamma ray de-polymerized CMC to a viscosity average molecular weight of 18 kDa at a concentration of 2 phr then centrifuged at a centrifugal force of 12,500 g .Tensile strength and elongation at break of the film with 1 phr α- Tocopherol acetate before and after accelerated aging at 70 ℃ found to be 22.3 MPa, 807% and 20.44 MPa, 772% respectively.