2005
DOI: 10.1590/s0104-66322005000200007
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Drying and shrinkage of polymer gels

Abstract: -The polymer hydrogel was synthesized by photo-polymerization process (UV light, 60 O C) in presence of Photo-initiator (Irgacure R ) and Cross-linker (NN'-methylene bisacrylamide; MBAM). In the present work, the drying of polymer hydrogel was carried out to study the effect of temperature, gel-sheet thickness, monomer ratio of acryl acid to acrylamide (AA/AM), concentration of MBAM and quantity of monomers. A correlation has been developed for modified sheet thickness as a function of contraction coefficien… Show more

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Cited by 27 publications
(24 citation statements)
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(5 reference statements)
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“…Upon drying acrylic acid and acrylamide gels, the W c increased with the drying temperature and decreased with gel thickness, in agreement with the results of the present work (Waje et al, 2005).…”
Section: Model Parameterssupporting
confidence: 92%
See 1 more Smart Citation
“…Upon drying acrylic acid and acrylamide gels, the W c increased with the drying temperature and decreased with gel thickness, in agreement with the results of the present work (Waje et al, 2005).…”
Section: Model Parameterssupporting
confidence: 92%
“…Values of D ef ranged from 1.33 Â 10 À10 to 2.12 Â 10 À11 m 2 s À1 for drying of silica gel at temperatures from 40 to 70 C, respectively (Park et al, 2003). Increase in effective diffusivity with increasing temperature and decrease in acrylic acid concentration in gels formulated with acrylic acid and acrylamide were verified by Waje et al (2005). These effects confirm the interaction observed between yam starch concentration and temperature in the present study.…”
Section: Model Parameterssupporting
confidence: 87%
“…But activation energies were found very similar but smaller than that of Jiang et al [8]. The present activation energies were in the range of the reported values, 2.98 kJ/g mol to 58.9 kJ/g mol [8,15,[20][21][22][23][24][25][26][27].…”
Section: Resultssupporting
confidence: 57%
“…O efeito da temperatura sobre o teor de água crítico (Figura 3B) foi o mesmo obtido por Reis et al (2013) e Waje et al (2004) ou seja, U c aumentou com o aumento da temperatura de secagem. Em contrapartida, Stupa et al (2003) obtiveram resultados diferentes.…”
Section: Resultsunclassified