Effects of Soy Protein on the Crystallization and Dielectric Properties of PEG/PEG Copolymers

Abstract

Blending, as an important method in polymer manufacture, can combine the advantages of the components and may have better properties than the individual components. [ 11 ] Therefore, much research on blends using SP and other polymers such as with poly(ester amide)s, [ 12 ] polyesters, [ 11 ] poly(lactic acid)s, [ 13 ] polycaprolactones, [ 14 ] chitin, [ 15 ] lignin, [ 16 ] cellulose, [ 8 ] poly(vinyl alcohol), [ 17 ] and polyacrylonitrile has been reported. [ 18 ] However, the properties of the polymer blends greatly depend on the compatibility between the components. Therefore, a third component, called a compatibilizer, is usually added to increase the compatibility and to modify the interaction between the soy protein isolate (SPI) and the polymer. Generally, there are two typical kinds of compatibilizers. The fi rst one is a polymer with block/grafted structure in which one block is miscible with SPI, and the other block is compatible with the polymer. For example, maleic anhydride grafted polyesters were used as compatibilizers to enhance the compatibility of SP and biodegradable polyesters. [ 19 ] Hydrolyzed polyacrylonitrile (PAN) and acrylonitrile-grafted soybean protein isolate (AN-graft -SPI) were synthesized to improve the compatibility between PAN and SPI. [ 20 ] Another kind of compatibilizer is reactive functional additives. During the blending preparation, reaction at the interface signifi cantly reduced the interfacial tension, stabilized the phase morphology, and strengthened the interface. For example, methylene diphenyl diisocyanate was used as a

Numerical study on mechanisms of soy protein as a functional modifier for polymer materials

“…These biomaterials can be degraded into water, carbon dioxide and biomass when exposed to soil moisture, oxygen or microorganisms, and are environment friendly. Plant proteins based biomaterials, such as soy proteins, gluten and whey protein, are one of the promising candidates and have attracted enormous attention as functional polymer blends, coating and bioplastic films, with intended applications for commodity products [1,2], electronics [3,4], and biomedical applications [5,6] etc, because of their good film forming properties, oxygen permeability and reasonable mechanical properties [7,8]. Soy protein is one of the promising candidate that is inexpensive and abundant [9], and has been widely studied.…”

Effective structure regulation of poly(vinylidene fluoride) via soy protein isolate: A morphological study

“…In recent years, biomaterials derived from vegetable proteins have attracted enormous attention as a critical component in functional polymer blends, with intended applications for commodity products, electronics, biomedical, and bio‐engineering applications, etc. Soy protein, as one of the low cost and abundant natural resources, have been widely studied.…”

Potential Application and Molecular Mechanisms of Soy Protein on the Enhancement of Graphite Nanoplatelet Dispersion

“…Moreover, soy protein has multiple levels of structure including primary, secondary, tertiary and quaternary structures. Owing to its availability, low cost and richness in composition and structure, the soy protein has been actively investigated as a component for next-generation polymer materials recently. − However, the soy proteins must be denatured before they can be used effectively in those applications.…”