کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1687382 1010653 2009 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Radiation processed polychloroprene–co-ethylene-propene diene terpolymer blends: Effect of radiation vulcanization on solvent transport kinetics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Radiation processed polychloroprene–co-ethylene-propene diene terpolymer blends: Effect of radiation vulcanization on solvent transport kinetics
چکیده انگلیسی

Blends of polychloroprene rubber (PCR) and ethylene propylene diene terpolymer rubber (EPDM) of different compositions were made and exposed to different gamma radiation doses. The radiation sensitivity and radiation vulcanization efficiency of blends was estimated by gel-content analysis, Charlesby-Pinner parameter determination and crosslinking density measurements. Gamma radiation induced crosslinking was most efficient for EPDM (p0/q0 ∼ 0.08), whereas it was the lowest for blends containing 40% PCR (p0/q0 ∼ 0.34). The vulcanized blends were characterized for solvent diffusion characteristics by following the swelling dynamics. Blends with higher PCR content showed anomalous swelling. The sorption and permeability of the solvent were not strictly in accordance with each other and the extent of variation in two parameters was found to be a function of blend composition. The ΔG values for solvent diffusion were in the range −2.97 to −9.58 kJ/mol and indicated thermodynamically favorable sorption for all blends. These results were corroborated by dynamic swelling, experimental as well as simulated profiles and have been explained on the basis of correlation between crosslinking density, diffusion kinetics, thermodynamic parameters and polymer–polymer interaction parameter.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms - Volume 267, Issue 5, March 2009, Pages 795–801
نویسندگان
, , , , , ,