Preparation and Characterization of Corn Starch/Clay Nanocomposite Films: Effect of Clay Content and Surface Modification

<p>A series of nanocomposites consist of organic polyimide and organo-modified clay content varying from 0 to 5 wt%, were successfully prepared by in situ polymerization. Polyimide used as a matrix of nanocomposite was prepared through the reaction of 1,4-bis [4-aminophenoxy] butane (APB) and 3،3΄،4،4΄-benzophenone tetra carboxylic dianhydride (BTDA) in N,N-dimethylacetamide (DMAc). The resulting nanocomposite films were characterized by FT-IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA).</p>

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Rheological Characterization of Starch Gelatinization: Effects of plasticizer/starch ratio and clay content in corn-starch/glycerol thermoplastic starch (TPS)

MRS Proceedings ◽

10.1557/opl.2014.8 ◽

2014 ◽

Vol 1622 ◽

pp. 161-167

Author(s):

Sandra Lara ◽

Felipe Salcedo

Keyword(s):

Corn Starch ◽

Clay Content ◽

Thermoplastic Starch ◽

Heating Rates ◽

Rheological Characterization ◽

Gel Properties ◽

Rheological Study ◽

Formulation Variables ◽

Oscillatory Temperature

ABSTRACTThis work presents a systematic rheological study of the gelatinization process of corn-starch plasticized with glycerol, showing the effects of the glycerol/starch ratio, water/starch ratio, and clay (montmorillonite) content. Gelatinization temperatures at different heating rates in rheological oscillatory temperature-sweep experiments were determined for different corn-starch/glycerol/clay formulations. The influences of the different formulation variables on the gelatinization processes and on the gel properties are analyzed. Some hypotheses postulating how the different intermolecular interactions present in the composites are responsible for these effects are discussed.

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Synthesis and Characterization of New Polyimide/Organoclay Nanocomposites Derived From 3,3′,4,4′-Biphenyltetracarboxylic Dianhydride and 1,2-Bis(4-Aminophenoxy)Ethane

High Temperature Materials and Processes ◽

10.1515/htmp-2012-0109 ◽

2013 ◽

Vol 32 (2) ◽

pp. 171-178 ◽

Cited By ~ 1

Author(s):

Akram Feyzi ◽

Khalil Faghihi ◽

Abdol Ali Zolanvari

Keyword(s):

Clay Content ◽

Nanocomposite Films ◽

Synthesis And Characterization ◽

X Ray Diffraction ◽

X Ray ◽

Ft Ir ◽

Biphenyltetracarboxylic Dianhydride ◽

Ft Ir Spectroscopy

AbstractA series of nanocomposites consist of organic polyimide and organo-modified clay content varying from 0 to 10 mass%, were successfully prepared by in situ polymerization. Polyimide used as a matrix of nanocomposite was prepared through the reaction of 1,2-bis(4-aminophenoxy)ethane (BAE) and 3,3′,4,4′-biphenyltetracarboxylic dianhydride (BPDA) in N,N-dimethylacetamide (DMAC). The resulting nanocomposite films were characterized by FT-IR spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM) and thermogravimetric analysis (TGA).

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