The plasticizing effect of alginate on the thermoplastic starch/glycerin blends

Córdoba, Andrés; Cuéllar, Nicolás; González, Mauricio; Medina, Jorge

doi:10.1016/j.carbpol.2007.12.007

Cited by 48 publications

(31 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…This indicates that incorporation of agar into starch film could provide a very good cohesive matrix, which contributes to enhancing the mechanical properties of starch based films. Cordoba et al (2008) studied the effect of alginate on the properties of thermoplastic starch. According to the experimental evidence presented in their work, a decrease in the elastic properties and an increase in elongation at break and impact resistance was observed when alginate was added into the thermoplastic starch.…”

Section: Combination With Algae Polysaccharidesmentioning

confidence: 99%

Rice Starch-Based Biodegradable Films: Properties Enhancement

Wittaya¹

2012

Structure and Function of Food Engineering

View full text Add to dashboard Cite

Section: Combination With Algae Polysaccharidesmentioning

confidence: 99%

Rice Starch-Based Biodegradable Films: Properties Enhancement

Wittaya¹

2012

Structure and Function of Food Engineering

View full text Add to dashboard Cite

“…1 Among the many kinds of renewable polymers, starch has shown promise for applications in the fields of agriculture, industry, food engineering, and medicine in biodegradable plastics, 2 composites, 3 edible films, 4 food hydrocolloids, 5 surface coatings, [6][7][8] and packaging materials, and for drug delivery. 9 However, the commercialization of starch-based films/composites has been stagnant, primarily due to their poor mechanical properties and high moisture sensitivity.…”

Section: Introductionmentioning

confidence: 99%

“…12 CS is nontoxic, biodegradable, and biofunctional and has the structure of a linear copolymer with glucosamine and N-acetyl glucosamine units linked by b-1,4 glycoside. In an acidic environment, the amino group (NH 2 ) can be protonated to NH 3 þ to readily form electrostatic interactions with anionic groups. As expected, the functional properties of CS films are improved when CS is combined with other film-forming materials.…”

Section: Introductionmentioning

confidence: 99%

Oxidized pea starch/chitosan composite films: Structural characterization and properties

Liu

Chen

et al. 2010

J of Applied Polymer Sci

View full text Add to dashboard Cite

In this article, a series of oxidized pea starch/chitosan (OPS/CS) blend films were prepared by a casting and solvent evaporation method. The structure, thermal behavior, and mechanical properties of the films were investigated by means of Fourier transform infrared spectroscopy, wide-angle X-ray diffraction, scanning electron microscopy, thermogravimetric analysis, and tensile testing. The results suggested that, in addition to hydrogen bonding, the interactions between OPS and CS molecules were enhanced by the formation of electrostatic interaction between the negatively charged carboxyl groups on OPS and the positively charged amino groups on CS. Compared with the pea starch/chitosan (PS/CS) blend films, OPS/CS blend films exhibited significantly higher tensile strength with significantly lower elongation at break. Moreover, incorporation of CS into the OPS matrix also led to a decrease in moisture uptake by the composite film.

show abstract

“…8,9 Starch is not a true thermoplastic but in the presence of plasticizer at high temperature and under shear, it can readily melt and flow, similar to most conventional synthetic thermoplastic polymers. Because of its low cost availability as a renewable resource, biodegradable, and innocuous degradation products, it has already been widely researched.…”

Section: Introductionmentioning

confidence: 99%

Physical and thermal mechanical properties of corn starch/LDPE composites

Oromiehie

lari

Rabiee

2012

J of Applied Polymer Sci

View full text Add to dashboard Cite

The potential of biodegradable polymers has long been recognized. In this work, composites of low density polyethylene (LDPE) and low density polyethylene/thermoplastic starch (LDPE/TPS) at different ratios of TPS (40%-60% w/w) were prepared in internal mixer. Polyethylene-grafted maleic anhydride (PE-g-MA) at 3 wt % was used as coupling agent. Chemical reactions between functional groups of composite components were studied and confirmed by Fourier transforms infrared (FTIR) spectroscopy. The morphology of film surfaces was studied using scanning electron microscopy. The physical, mechanical, and dynamic-mechanical thermal analyses of LDPE/TPS composites were evaluated. The FTIR results showed transmission peak at 1642 cm À1 , which is the result of chemical reaction between the hydroxyl groups of starch and anhydride groups of coupling agent. This verifies the presence of the carboxylate group due to the formation of ester bonding. The results showed that the water absorption and density of composite films increased by increasing the starch content in LDPE/TPS composites. The tensile strength and elongation at break decreased by increasing the starch level in the composites, but the young's modulus increased. The morphological studies showed that the biodegradability of composites increased by increasing the starch content and the results was confirmed by weight loss in buring the samples in wet soil during time intervals. The dynamic mechanical thermal analyzer thermograms showed that there are two relaxation temperature peaks. The amplitude of peaks increased by increasing the starch content from 40 to 60% probably due to increasing amorphous phase of composite. The starch was uniformly distributed throughout the LDPE polymer matrix and compatible and biodegradable composites were formed.

show abstract

The plasticizing effect of alginate on the thermoplastic starch/glycerin blends

Cited by 48 publications

References 14 publications

Rice Starch-Based Biodegradable Films: Properties Enhancement

Rice Starch-Based Biodegradable Films: Properties Enhancement

Oxidized pea starch/chitosan composite films: Structural characterization and properties

Physical and thermal mechanical properties of corn starch/LDPE composites

Contact Info

Product

Resources

About