In situ photon transmission technique for studying ageing in acrylamide gels due to multiple swelling
Küçük Resim Yok
Tarih
1998
Yazarlar
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Elsevier Sci Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
In situ photon transmission experiments were performed using an ultra-violet-visible (u.v.-vis) spectrometer during the multiple swelling of polyacrylamide (PAAm) gel in water. The transmitted light intensity, I, decreased continuously as the PAAm gel swelled. The decrease in I, was attributed to the increase in scattered light intensity which might have orginated from the contrast between 'frozen blob clusters' and holes in the swollen gel. It was observed that the correlation length, xi(c), increased by 1/4 power of the swelling time. The sudden increase in the gel relaxation time, tau, was attributed to the rupture of the network structure after the eighth swelling step during multiple swelling of the PAAm gel. (C) 1998 Elsevier Science Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
In Situ Photon Transmission Technique, Ageing, Acrylamide Gels, Volume Phase-Transition, Collapse, Kinetics
Kaynak
Polymer
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
39
Sayı
18
