Evaluation of the types of starch for preparation of LDPE/starch blends

Abstract

This study evaluated in relation the growth, and the amylolytic activity of mixed and isolated cultures of

Effects of PE-g-MA on Tensile Properties, Morphology and Water Absorption of LDPE/Thermoplastic Sago Starch Blends

“…This refers to the reaction between the anhydride groups of the compatibilizer and the hydroxyl groups of either the starch or glycerol. The reaction produces branched and cross-linked macromolecules which have higher melt viscosity compared to linear macromolecules [1,9] . For the blends containing 10 and 20 wt.…”

“…PE=thermoplastic starch blends, however, have low mechanical properties such as tensile strength and elongation at break due to poor interfacial adhesion between the two components. Starch has the tendency to agglomerate and create stress concentration areas leading to poor mechanical properties [8,9] . The blends, however, exhibit good degradability at high starch loading.…”

“…One way to improve miscibility and compatibility in starch blends is to use a compatibilizer containing groups capable of hydrogen bonding with starch hydroxyls [8][9][10] .…”

Studies on the Combined Impact of Starch Source and Multiple Processing on Selected Properties of Thermoplastic Starch/Ethylene-Vinyl Acetate Blends

“…In many works, researchers investigated various sources of starch for manufacturing of TPS, such as potatoes, corn, rice, wheat, cassava, barley, pea or tapioca [4]. Although dependences between starch type and TPS properties were comprehensively analyzed in many works for native and thermoplastic starches, their influence on the structure and performance of TPS/polymer blends was described in only few works and mainly focused on TPS/PE and TPS/PP blends [15][16][17]. Therefore, with growing interest in new TPS/polymer blends, it is important to thoroughly investigate the compatibility, structure and performance of blends comprising of starches from different sources and with different content of amylose and amylopectin.…”

Characterization of foams obtained from cassava starch, cellulose fibres and dolomitic limestone by a thermopressing process

“…The use of environmentallyfriendly materials is an alternative to petroleumbased materials. When biodegradable materials are discarded in the environment, they are easily degraded into simpler compounds that can be metabolised by microorganisms such as bacteria, yeast and fungi (Gould et al, 1990;Vinhas et al, 2007). In order to decrease the negative impact and volumes of solid residues in the environment caused by plastic packaging, new biodegradable materials have been developed.…”