Irradiation of poly(vinyl alcohol) fibers in the presence of chloroform and carbon tetrachloride

✍ Scribed by I. K. Varma; Kamlesh K. Sharma; D. S. Varma

• Publisher: John Wiley and Sons
• Year: 1977
• Tongue: English
• Weight: 315 KB
• Volume: 21
• Category: Article
• ISSN: 0021-8995
• DOI: 10.1002/app.1977.070211107

✦ Synopsis

Radiolysis of poly(viny1 alcohol) fibers (PVA) in the presence of chloroform and carbon tetrachloride was investigated. Decrease in intrinsic viscosity was observed at lower dosages (up to 2.3 megarads); and above this, an increase was noted. The blank samples irradiated under similar conditions showed a continuous decrease in intrinsic viscosity. A discoloration in the samples irradiated in the presence of CCl4 and CHCI3 was also observed. It is attributed to double bond formation in the backbone. A marginal decrease in the tensile strength of the irradiated fibers was observed. However, the surface characteristics of the fibers did not change on irradiation. The thermogravimetric analysis revealed a better heat resistance in irradiated fibers.