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Czasopismo
2008 | 6 | 4 | 575-580
Tytuł artykułu

Study of multiblock polyamide-6/Poly-(isoprene) copolymers by positron annihilation spectroscopy

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Positron annihilation lifetime spectroscopy (PALS) has been used to determine the free volume in multiblock polyamide-6/poly-(isoprene) copolymers (PA-6/PI), synthesized via activated anionic bulk copolymerization. The diisocyanate functionalized telechelic PI, blocked with caprolactam (CL) has been used as a commoner and an activator at the same time. The elastic PI block incorporated into the main chain of PA-6 affects the amorphous and crystal phase of the copolymer leading to changing in degree of crystallinity. The positron annihilation lifetime spectroscopy (PAL) and Doppler broadening of annihilation line (DBAL) technique in a set of pure PA-6 and PA-6/PI copolymers with two different compositions have been applied and evaluation of the size of free-volume holes (pores), localized mainly in the disordered regions of the PA-6/PI copolymer by measuring the o-Ps lifetime (τ3) and o-Ps intensity (I3) has been performed. [...]
Wydawca

Czasopismo
Rocznik
Tom
6
Numer
4
Strony
575-580
Opis fizyczny
Daty
wydano
2008-12-01
online
2008-10-28
Twórcy
autor
  • Department of Polymer Engineering, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria, rbryaskova@uctm.edu
autor
  • Department of Polymer Engineering, University of Chemical Technology and Metallurgy, 1756, Sofia, Bulgaria
autor
  • Institute of Nuclear Research and Nuclear Energy, 1784, Sofia, Bulgaria
autor
  • Faculty of Physics, Sofia University, 1126, Sofia, Bulgaria
Bibliografia
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_s11532-008-0073-9
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