Plasticized starch-based biocomposites containing modified rice straw fillers with thermoplastic, thermoset-like and thermoset chemical structures.

07:00 EST 30th November 2019 | BioPortfolio

Summary of "Plasticized starch-based biocomposites containing modified rice straw fillers with thermoplastic, thermoset-like and thermoset chemical structures."

In this work, rice straw (RS) as an abundant biomass was applied to prepare some renewable thermoplastic materials by using soda-pulping and benzylation processes. The obtained RS products including untreated RS, RS pulp, benzylated RS pulp and pulping liquor as well as benzylated RS were incorporated into the thermoplastic starch through a twin-screw extrusion process to obtain all green composites. The successful thermoplasticization reaction of RS products was confirmed by spectroscopy results and morphological observations. The interfacial adhesion between the plasticized starch matrix and the RS products is enhanced by the chemical modifications, which confirmed by investigating through the morphological observations and linear rheological responses. The partial phase miscibility of the plasticizer/starch mixtures is improved by adding the benzylated RS and RS pulp. The RS pulp having cellulosic microfibers enhances the Young modulus and tensile strength of the plasticized starch even more than untreated RS. However, their thermoset and thermoset-like structure leads to the brittle failure mode of the starch biocomposites, similar to the common natural fiber biocomposites. The thermoplasticization reaction changes the failure mode and significantly improves the toughness of the plasticized starch/RS product biocomposites owing to better phase miscibility.


Journal Details

This article was published in the following journal.

Name: International journal of biological macromolecules
ISSN: 1879-0003


DeepDyve research library

PubMed Articles [16989 Associated PubMed Articles listed on BioPortfolio]

Multi-perspective analyses of rice straw modification by Pleurotus ostreatus and effects on biomethane production.

Multi-perspective analyses were carried out to investigate the effect of rice straw modification for 45 days by P. ostreatus on biomethane of production. The results showed that rice straw modified ...

In vitro digestibility of rice starch granules modified by β-amylase, transglucosidase and pullulanase.

It is highly desirable to lower the glycemic index of rice starch-based foods. Herein, rice starch granules were treated sequentially with β-amylase (BA), transglucosidase (TG) and pullulanase (PUL)....

Incorporation of natural antioxidants from rice straw into renewable starch films.

This study showed that rice straw waste is a valuable source for the extraction of water-soluble phenolic compounds that can be successfully incorporated into bioactive starch-based films. The major p...

Structural and functional characterization of rice starch-based superabsorbent polymer materials.

The aim of this work was to develop new, rice starch-based superabsorbent materials (SPAMs), degradable and eco-friendly. Indica rice starch-based SPAM had the best water absorption capacity (439 g wa...

QTL-seq identifies cooked grain elongation QTLs near soluble starch synthase and starch branching enzymes in rice (Oryza sativa L.).

Grain quality is one of the main targets that rice breeders focus on to improve elite rice varieties. Several characteristics are considered when determine rice grain quality, such as aroma, amylose c...

Clinical Trials [4883 Associated Clinical Trials listed on BioPortfolio]

Gastric Emptying of Rice With Different Starch Properties

Glycemic carbohydrates are associated with metabolic disturbances, such as type II diabetes, due to rapid digestion of starch into glucose. The specific properties of starch within these f...

Effect of Genetic Variation in Starch-digesting Enzymes on Digestibility and Glycemic Index of Cold and Hot Rice

This study evaluates the effect of different methods of preparation (cooked and consumed hot vs cooked, cooled overnight and consumed cold) and variation in the activity of salivary amylas...

Long Time Metabolic Changes Induced by Genetically Modified Potatoes

In this study the effects of genetically modified potatoes on the human metabolism will be observed. Healthy volunteers receive for one week muffins, produced with starch from a geneticall...

Food Modification to Alter Glycaemia and Insulinaemia

The study specifically aims to determine glycemic and insulinemic response of added low GI ingredients, beta-glucan, resistant starch and isomaltulose to foods.

Iron Absorption From Fortified Extruded Rice Using Different Extruding Temperatures.

Food fortification is regarded as a safe and cost-effective approach to counteract and prevent iron deficiency. Rice is a staple food for millions of people living in regions where iron-de...

Medical and Biotech [MESH] Definitions

The anamorphic form of the fungus MAGNAPORTHE GRISEA and the most important pathogen of rice worldwide. It causes rice blast which prevents maturation of the rice grains.

Starches that have been chemically modified so that a percentage of OH groups are substituted with 2-hydroxyethyl ether groups.

OIL extracted from the hard outer brown layer of rice bran after the husk has been removed.

A genus of DNA plant viruses in the family CAULIMOVIRIDAE. The sole species, Rice tungro bacilliform virus, shows 25% identity with BADNAVIRUS. It is transmitted by leafhoppers with the assistance of RICE TUNGRO SPHERICAL VIRUS.

Electrophoresis in which a starch gel (a mixture of amylose and amylopectin) is used as the diffusion medium.

Quick Search

DeepDyve research library

Searches Linking to this Article