Abstract
Post-irradiation effects on nylon 6,12 crystalline fibers gamma-irradiated 6 years previously (6YI) were studied, including thermal stability and morphology; their relationship with storage time was also studied. The results of these studies were compared with those obtained for non-irradiated (NI) and namely freshly irradiated (FI) crystalline fibers. The results include analyses like thermogravimetric analysis (TGA), differential thermal analysis (DTA), scanning electron microscopy (SEM) and optical images for (6YI and FI) both kinds of nylon 6,12 fibers. The results showed that the most prominent effect is related to the reaction progress. The chain scission and/or crosslinking mechanisms, as well as the free radicals, allow proceeding with the reaction, and consequently, changes on the properties of the FI samples. The melting point, degree of crystallinity, degradation temperature and morphology prove that additional chemical reactions and surface modifications keep occurring in the fibers long after the irradiation process has ended. With storage time, the surface becomes rougher, the color turns yellowish, the melting point diminishes and the degree of crystallinity increases.
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Artikel in diesem Heft
- Masthead
- Masthead
- Original articles
- Solvent-initiator compatibility and sensitivity of conversion of styrene homo-polymerization
- Synthesis and effect of secondary dopant on the conductivity of conducting polymer polyaniline
- Potential utilization of recycled PET in comparison with liquid crystalline polymer as an additive for HDPE based composite fibers: Comparative investigation on mechanical performance of cross-ply laminates
- Study on the effect of virgin and recycled chloroprene rubber (vCR and rCR) on the properties of natural rubber/chloroprene rubber (NR/CR) blends
- Synthesis of a novel silicone based copolymeric surfactant and application in emulsion polymerization
- Post-irradiation effects on gamma-irradiated nylon 6,12 fibers
- Preparation and properties of sodium alginate films
- Study on crystallization and compatibility of nitrile butadiene rubber (NBR)/polyoxymethlene (POM) blends modified by a polyether polyol
- Polyamide grafting onto ethylene-vinyl alcohol copolymer
- Acoustic parameter investigation of polyvinyl acetate with acetic acid using ultrasonic technique
- Electrospun cellulosic structure nanofibre based on rice straw
- Function of silicon oil in the castor oil based rigid polyurethane foams
Artikel in diesem Heft
- Masthead
- Masthead
- Original articles
- Solvent-initiator compatibility and sensitivity of conversion of styrene homo-polymerization
- Synthesis and effect of secondary dopant on the conductivity of conducting polymer polyaniline
- Potential utilization of recycled PET in comparison with liquid crystalline polymer as an additive for HDPE based composite fibers: Comparative investigation on mechanical performance of cross-ply laminates
- Study on the effect of virgin and recycled chloroprene rubber (vCR and rCR) on the properties of natural rubber/chloroprene rubber (NR/CR) blends
- Synthesis of a novel silicone based copolymeric surfactant and application in emulsion polymerization
- Post-irradiation effects on gamma-irradiated nylon 6,12 fibers
- Preparation and properties of sodium alginate films
- Study on crystallization and compatibility of nitrile butadiene rubber (NBR)/polyoxymethlene (POM) blends modified by a polyether polyol
- Polyamide grafting onto ethylene-vinyl alcohol copolymer
- Acoustic parameter investigation of polyvinyl acetate with acetic acid using ultrasonic technique
- Electrospun cellulosic structure nanofibre based on rice straw
- Function of silicon oil in the castor oil based rigid polyurethane foams