Temperature Stability of Modified PBT by Radiation Cross-Linking

Abstract

Radiation processing of polymers is a well-established and economical commercial method of precisely modifying the properties of polymers. The principle of radiation processing is the ability of high energy radiation to produce reactive cations, anions and free radicals in materials. The industrial applications of the radiation processing of plastics and composites include polymerization, cross-linking, degradation and grafting. Radiation processing mainly involves the use of either electron beams from electron accelerators or gamma radiation from Cobalt-60 sources. The PBT Polybutylene terephthalate tested showed significant changes of temperature stability and mechanical properties after irradiation. From this point view, new applications could also be seen in areas with service temperatures higher than their former melting point. The comparison of the temperature stability and mechanical properties of irradiated and non-irradiated PBT is presented in this paper.

Effect of Beta Radiation on the Quality of the Bonded Joint for Difficult to Bond Polyolefins

“…In general, the penetration depth depends on the density and the atomic number of the irradiated material, and the geometry could also have some interests affected, as reported in [21,22,23,24,25]. Most previous studies [28,29,30,31,32] that examined the effect of irradiation on the resulting properties of materials primarily focused on describing the structural changes, mechanical properties, and chemical- and temperature-resistance dependence on radiation doses. Gheysari et al [23] referred the positive effect of high-energy β − radiation on the mechanical and thermal properties of low-density and high-density polyethylene (LDPE and HDPE, respectively), which were modified by using radiation doses ranging from 50 to 250 kGy.…”

Effect of E-Beam Irradiation on Thermal and Mechanical Properties of Ester Elastomers Containing Multifunctional Alcohols

“…Radiation cross-linking of polyesters in particular has attracted a noticeable amount of attention from researchers. Examples of aromatic polyesters cross-linked by radiation are poly(butylene terephthalate) (PBT) [10] and pol(ethylene terephthalate) (PET), though due to its properties it requires addition of a sensitizer [11,12]. Polyester-based thermoplastic elastomers can also be modified by radiation [13] In case of biodegradable aliphatic polyesters, polylactide (PLA) have been most extensively tested.…”

Influence of e-Beam Irradiation on the Physicochemical Properties of Poly(polyol Succinate-co-Butylene Succinate) Ester Elastomers

“…Radiation modification of other polyesters was also reported, such as poly(butylene succinate) (PBS) with addition of trimethallyl isocyanurate (TMAIC) [ 10 ], various thermoplastic elastomers with and without cross-linking agents [ 11 , 12 ], poly(ethylene terephthalate) impregnated with radiation sensitizer—trimethylopropane triacrylate (TMPTA) [ 13 , 14 ], poly(butylene adipate-co-terephthalate) (PBAT) with TAIC [ 15 ], poly(butylene terephthalate) (PBT) with triallyl cyanurate [ 16 ], and without any cross-linking agents [ 17 ]. Bacterial polyesters were also radiation cross-linked without requiring any cross-linking agents [ 18 , 19 ].…”