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Bae, H.J.,Park, H.J.,Hong, S.I.,Byun, Y.J.,Darby, D.O.,Kimmel, R.M.,Whiteside, W.S. Academic Press, etc 2009 FOOD SCIENCE AND TECHNOLOGY -ZURICH- Vol.42 No.6
The effect of clay content, homogenization RPM, and pH on the mechanical and barrier properties of fish gelatin/nanoclay composite films was investigated. The addition of 5% nanoclay (w/w) increased the tensile strength from 30.31+/-2.37MPa to 40.71+/-3.30MPa. The 9g clay/100g gelatin film exhibited the largest improvements in oxygen and water barrier properties. Oxygen permeability decreased from 402.8x10<SUP>-6</SUP>+/-0.7x10<SUP>-6</SUP>gm/m<SUP>2</SUP>dayatm to 114.4x10<SUP>-6</SUP>+/-16.2x10<SUP>-6</SUP> gm/m<SUP>2</SUP>dayatm and the water vapor permeability decreased from 31.2x10<SUP>-3</SUP>+/-1.6x10<SUP>-3</SUP> ngm/m<SUP>2</SUP>sPa to 8.1x10<SUP>-3</SUP>+/-0.1x10<SUP>-3</SUP> ngm/m<SUP>2</SUP>sPa. The XRD and TEM observation suggested that the ultrasonication treatment (30min at 40% output) resulted in exfoliation of the silicates.
Development and characterization of PET/Fish Gelatin–nanoclay composite/LDPE laminate
Bae, Ho J.,Park, Hyun J.,Darby, Duncan O.,Kimmel, Robert M.,Whiteside, William S. John Wiley Sons, Ltd. 2009 Packaging technology & science Vol.22 No.7
<P>A three-layer laminate film was developed with the following structure: polyethylene terephthalate (PET)/fish gelatin (FG)–nanoclay composite/low-density polyethylene (LDPE). The FG–nanoclay composite material functioned as the oxygen barrier layer and demonstrated comparable oxygen barrier properties when compared with a similar laminate utilizing ethylene vinyl alcohol as the barrier layer at a relative humidity (RH) of up to 50%. The introduction of nanometer-sized filler clay into the FG matrix lowered the oxygen permeability (OP) because of the tortuosity effect of the clay particles. In addition, the FG–nanoclay composite film exhibited bond strengths similar to both LDPE and PET. The hydrophilic nature of FG significantly increases OP under high (>50%) RH conditions. However, this new FG laminate film could be a possible alternative for packaging designers desiring a more sustainable packaging material for low-RH (<50%) applications. Copyright © 2009 John Wiley & Sons, Ltd.</P>
Cho, N.-H.,Kim, H.-R.,Lee, J.-H.,Kim, S.-Y.,Kim, J.,Cha, S.,Kim, S.-Y.,Darby, A. C.,Fuxelius, H.-H.,Yin, J.,Kim, J. H.,Kim, J.,Lee, S. J.,Koh, Y.-S.,Jang, W.-J.,Park, K.-H.,Andersson, S. G. E.,Choi, M Proceedings of the National Academy of Sciences 2007 PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF Vol.104 No.19