T. Puspitasari, TP and K.M.L. Raja, KMLR and D.S. Pangerteni, DSP and A. Patriati, AP and E.G.R. Putra, EGRP (2012) Structural Organization of Poly(vinyl alcohol) Hydrogels Obtained by Freezing/Thawing and J-Irradiation Processes: A Small-Angle Neutron Scattering (SANS) Study. Procedia Chemistry, 4. pp. 186-193.
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Abstract
The structural organization of poly(vinil alcohol) (PVA) hydrogels obtained by repeatedly freeze/thaw and
J-irradiation processes of 15% w/w PVA solution in D2O has been revealed by small-angle neutron scattering
(SANS) technique. The opaque sample is due two separated phases which composed by polymer-rich and polymerpoor
regions occurred from freezing/thawing samples, while transparent sample formed from irradiated PVA
hydrogels sample. It has been pointed out from SANS experimental data that the cross-linking in the gels formed by
freezing/thawing process are crystallites as the scattering intensity I(Q) decreases with the momentum transfer Q
according to the -4th power law (Porod’s law) in the high Q-range region. From SANS data analysis, the radius of the
crystallite size is about 28 - 33 Å and its distributed inhomogeneously with the average distance of 150 - 175 Å in the
polymer-rich phase that consisted by crystalline PVA aggregates and swollen amorphous PVA. In opposite, the
irradiated PVA hydrogels with the irradiation dose of 40 kGy did not show a -4th power law scattering due to in
absence of crystalline and amorphous PVA phases in the polymer-rich region.
Item Type: | Article |
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Subjects: | Taksonomi BATAN > Rekayasa Perangkat dan Fasilitas Nuklir > Teknologi Proses Fasilitas Nuklir Taksonomi BATAN > Rekayasa Perangkat dan Fasilitas Nuklir > Teknologi Proses Fasilitas Nuklir |
Divisions: | BATAN > Sekolah Tinggi Teknologi Nuklir IPTEK > BATAN > Sekolah Tinggi Teknologi Nuklir |
Depositing User: | Administrator Repository |
Date Deposited: | 22 Nov 2018 08:43 |
Last Modified: | 31 May 2022 09:23 |
URI: | https://karya.brin.go.id/id/eprint/1205 |