Montmorillonite citric acid plasticized thermoplastic starch

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Wang N, Yu JG, Ma XF, The effects of citric acid on the properties of thermoplastic starch plasticized by glycerol, Starch-Starke, 57 (10): 5 19. Wang SM, Yu, JG, Study on the adsorbing process of the cellulose nitrate containing secondary amino group for creatinine, Chinese Journal of Organic Chemistry, 25 (10): 12

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urn:nbn:se:kau:diva : Montmorillonite clay for ...

By controlling these two reactions it was seen that this could lead to reduced gas permeability. It was also seen that cross-linking of starch by citric acid occurs at low temperatures, 70 °C at pH as high as 6.5. Starch nano-composites were produced by incorporating montmorillonite, to the barrier dispersion to improve the barrier properties.

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(PDF) Biopolymers from Natural Resources

 · In this case, PLA was loaded with commercial montmorillonite ... and the second was constituted of citric acid and k-carrageenan. ... introduced into thermoplastic starch …

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Thermoplastic starch modified during melt processing with ...

Abstract Thermoplastic starch (TPS) was modified with ascorbic acid and citric acid by melt processing of native starch with glycerol as plasticizer in an intensive batch mixer at 160 °C. It was found that the molar mass decreases with acid content and processing time causing the reduction in melting temperature (Tm). As observed by the results of X-ray diffraction and DSC measurements ...

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Physical and degradation properties of polylactic acid and ...

"Physical and degradation properties of polylactic acid and thermoplastic starch blends - Effect of citric acid treatment on starch structures," BioRes. 12(2), 3087. Abstract The physical and degradation properties of polylactic (PLA)/thermoplastic starch (TPS) blends after TPS modification with citric acid (CA) were investigated.

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A Facile Method for Preparation of Thermoplastic Starch ...

 · A facile two-step melt extrusion processing method was used to prepare high performance thermoplastic starch (TPS)/urea modified montmorillonite (UMMT) nanocomposites in this work. X-ray diffractio...

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Green Composites Comprising Thermoplastic Corn Starch …

The effects of citric acid on the properties of glycerol-plasticized thermoplastic starch were previously investigated (Yu et al. 2005), and a decrease of the shear viscosity and improvement in fluidity were observed. The addition of citric acid increased the thermal stability of thermoplastic starch as result of the strong hydrogen-bond ...

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Tesis: "Reactive extrusion process" – Grafiati

The interest in Wood-thermoplastic composites (WPCs) has increased during the last decades. WPCs are commonly used as building material for decking and railing because of its low need of maintenance. Wood is a renewable resource of good mechanical properties and this make wood fibers interesting to use as reinforcement in a thermoplastic composite.

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Effect of citric acid and processing on the performance of ...

 · Effect of citric acid and processing on the performance of thermoplastic starch/montmorillonite nanocomposites. ... Study on the properties of ethylenebisformamide plasticized corn starch (PTPS) with various original water contents of corn starch.

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Thermoplastic Starch−Waxy Maize Starch Nanocrystals ...

 · Waxy maize starch nanocrystals obtained by hydrolysis of native granules were used as a reinforcing agent in a thermoplastic waxy maize starch matrix plasticized with glycerol. Compared to our previous studies on starch nanocrystals reinforced natural rubber (NR) [Macromolecules 2005, 38, 3783; 2005, 38, 9161], the present system presents two particularities: (i) thermoplastic starch is a ...

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Improving the mechanical properties of thermoplastic ...

 · Effect of citric acid and processing on the performance of thermoplastic starch/montmorillonite nanocomposites Carbohyd Polym , 76 ( 1 ) ( 2009 ) , pp. 68 - 73 View Record in Scopus Google Scholar

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Effect of citric acid and processing on the performance of ...

Ning, et al. [8] studied the effect of citric acid on thermoplastic starch with sodium montmorillonite nanocomposites and found a shift of the peaks to lower wavelengths, reporting a possible ...

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Effect of citric acid and processing on the performance of ...

Ning, et al. [8] studied the effect of citric acid on thermoplastic starch with sodium montmorillonite nanocomposites and found a shift of the peaks to lower wavelengths, reporting a possible ...

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High mechanical performance MMT-urea and formamide ...

Abstract Biodegradable nanocomposites have been successfully fabricated from the thermoplastic cornstarch (TPCS) and activated-montmorillonite (MMT) by melt-intercalation. TPCS was plasticized with novel plasticizers urea and formamide, and the activated-montmorillonites were obtained using citric acid as the activated solvent. Compared with urea and formamide-plasticized thermoplastic ...

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Biodegradable Polymers: Blends of Starch and Poly(lactic) …

 · The effect of citric acid was also tested. Citric acid is thought to plasticize PLA as well as starch, increasing compatibility between the polymers. Again by examining viscosity during extrusion, we determined that citric acid does plasticize PLA. By looking at the SEM scans of the citric acid blends we determined that it

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The Effects of Citric Acid on the Properties of ...

 · The effects of citric acid on the properties of glycerol-plasticized thermoplastic starch (GPTPS) were studied. In the presence of citric acid and glycerol, native cornstarch granules are transferred to a continuous phase as shown by scanning electron microscopy (SEM).

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(PDF) Thermoplastic starch modified during melt processing ...

Thermoplastic starch modified during melt processing with organic acids: The effect of molar mass on thermal and mechanical properties. Download. Related Papers. Properties of thermoplastic starch from cassava bagasse and cassava starch and their blends with poly (lactic acid) By Antonio da Silva Curvelo. Advanced Nano-biocomposites Based on ...

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The effect of water and citric acid on sago starch bio ...

Secondly, a blend of starch powder, glycerol and citric acid. Basically, sago starch (25% amylose) was used in the experiment. The starch was plasticized with glycerol (95% purity) while citric acid and water were used as a co-plasticizer. Tables 1, 2 and 3 shows the material ratios and glycerol-mono-stearate was added as a lubricant. Table 1.

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Strength retention and moisture resistant properties of ...

 · Yu J, Wang N, Ma X (2005) The effects of citric acid on the properties of thermoplastic starch plasticized by glycerol. Starch 57(10):494–504. CAS Article Google Scholar 28. Soest JJGV, Hulleman SHD, Wit DD, Vliegenthart JFG (1996) Crystallinity in starch …

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Effects of Citric Acid on Structures and Properties of ...

 · The cross-linking reaction between citric acid and hydroxypropyl high amylomaize starch was achieved by reactive extrusion while preparing thermoplastic starch. The HPAS-CA film with initial pH at 5.66 had tensile strength at 7.20 MPa and elongation at break at 94.53%.

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Development of Thermoplastic Starch (TPS) Including ...

A thermoplastic starch (TPS) material is developed, based on corn starch plasticized with glycerol and citric acid in a 9:3:1 ratio and further bonded with isinglass and mono- and diglycerides of fatty acids (E471). In TPS, leather fragments, in the amount of 7.5 15 or 22.5 g/100 g of dry matter, were also introduced. The mixture was heated at a maximum temperature of 80 °C, then cast in ...

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Thermoplastic Starch−Waxy Maize Starch Nanocrystals ...

 · Waxy maize starch nanocrystals obtained by hydrolysis of native granules were used as a reinforcing agent in a thermoplastic waxy maize starch matrix plasticized with glycerol. Compared to our previous studies on starch nanocrystals reinforced natural rubber (NR) [Macromolecules 2005, 38, 3783; 2005, 38, 9161], the present system presents two particularities: (i) thermoplastic starch is a ...

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 · The influence of citric acid on the properties of thermoplastic starch/linear low-density polyethylene blends. Carbohydrate Polymers, 2007, 67 (3): 453. Wang Ning, Yu Jiugao, Chang Peter R. and Ma Xiaofei. Influence of citric acid on the properties of glycerol-plasticized dry starch (DTPS) and DTPS/ Poly (lactic acid) blends.

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Influence of Citric Acid on the Properties of Glycerol ...

 · Influence of Citric Acid on the Properties of Glycerol-plasticized dry Starch (DTPS) and DTPS/Poly(lactic acid) Blends Ning Wang , School of Science, Tianjin University, Tianjin, China

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(PDF) A Novel Modified Starch/Carboxy Methyl Cellulose ...

The composites of thermoplastic starch plasticized by urea and formamide/citric acid-activated montmorillonite (UFTPS/CMMT) were prepared by the method of …

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Effects of Citric Acid on Starch-Based Effects of Citric ...

Montmorillonite clay for starch -based barrier dispersion coating ² Part 1 The influence of citric acid on viscosity and barrier properties Submitted for publication V Olss on, E., Johansson, C. , Larsson, J., Järnström, L. Montmorillonite clay for starch -based barrier dispersion coating ² Part 2 …

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The Relationship between Starch Gelatinization and ...

Sandra Camila Lara, Felipe Salcedo, Gelatinization and retrogradation phenomena in starch/montmorillonite nanocomposites plasticized with different glycerol/water ratios, Carbohydrate Polymers, 10.1016/j.carbpol.2016.05.065, 151, ( 212), (2016).

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The Relationship between Starch Gelatinization and ...

Sandra Camila Lara, Felipe Salcedo, Gelatinization and retrogradation phenomena in starch/montmorillonite nanocomposites plasticized with different glycerol/water ratios, Carbohydrate Polymers, 10.1016/j.carbpol.2016.05.065, 151, ( 212), (2016).

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Plasticized Waxy Maize Starch: Effect of Polyols and ...

 · Effect of ultra-violet cross-linking on the properties of boric acid and glycerol co-plasticized thermoplastic starch films. Food Packaging and Shelf Life 2018, DOI: 10.1016/j.fpsl.2018.05.006. G. Madhumitha, J. Fowsiya, S. Mohana Roopan, Vijay Kumar Thakur. Recent advances in starch–clay nanocomposites.

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Preparation and properties of thermoplastic starch ...

 · Yu Jiugao, Wang Ning, Ma Xiaofei, The Effects of Citric Acid on the Properties of Thermoplastic Starch Plasticized by Glycerol, Starch - St rke, 10.1002/star.200500423, 57, 10, ( 504), (2005). Wiley Online Library

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