Property enhancement of soy protein isolate-based films by introducing POSS

Xia, Changlei; Zhang, Shifeng; Shi, Sheldon Q.; Cai, Liping; Garcia, Andres C.; Rizvi, Hussain R.; D’Souza, Nandika Anne

doi:10.1016/j.ijbiomac.2015.11.024

Cited by 55 publications

(23 citation statements)

References 37 publications

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“…However, the extensive use of SPI films has been limited because of their low tensile strength, poor water resistance and moisture barrier properties [13,14,15]. Much effort has been expended to improve these properties through physical, chemical and combination modifications of SPI materials [16,17,18,19,20,21]. Generally, the increased tensile strength of modified SPI-based films has consistently resulted in decreased flexibility due to the restricted molecular motion of the SPI main polymer chain [19,22].…”

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of All-Biomass Soy Protein Isolate-Based Films Enhanced by Epoxy Castor Oil Acid Sodium and Hydroxypropyl Cellulose

Wang

Zhang

et al. 2016

Materials

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All-biomass soy protein-based films were prepared using soy protein isolate (SPI), glycerol, hydroxypropyl cellulose (HPC) and epoxy castor oil acid sodium (ECOS). The effect of the incorporated HPC and ECOS on the properties of the SPI film was investigated. The experimental results showed that the tensile strength of the resultant films increased from 2.84 MPa (control) to 4.04 MPa and the elongation at break increased by 22.7% when the SPI was modified with 2% HPC and 10% ECOS. The increased tensile strength resulted from the reaction between the ECOS and SPI, which was confirmed by attenuated total reflectance-Fourier transform infrared spectroscopy (ATR-FTIR), scanning electron microscopy (SEM) and X-ray diffraction analysis (XRD). It was found that ECOS and HPC effectively improved the performance of SPI-based films, which can provide a new method for preparing environmentally-friendly polymer films for a number of commercial applications.

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Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of All-Biomass Soy Protein Isolate-Based Films Enhanced by Epoxy Castor Oil Acid Sodium and Hydroxypropyl Cellulose

Wang

Zhang

et al. 2016

Materials

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“…In order to alleviate the increasingly serious food safety problems and environmental pollution caused by petroleum-based polymer materials, there are now more investigations focused on renewable, degradable, and compostable films and coatings from polysaccharide, protein, and lipid biopolymers for packaging and other industrial applications such as mulching (Wu, Liu, Wang, & Ye, 2018;Xia et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…As a by-product of the edible oil industry, soy protein isolate (SPI) has the advantages of being inexpensive, biocompatible, renewable, etc., providing an environmentally conscious alternative to fossil fuel sources (Lodha & Netravali, 2005;Xia et al, 2016;Xu et al, 2015). SPI films with moderate mechanical properties and excellent oxygen and oil barrier properties can be applied to food packaging and coating (Han, Yu, & Wang, 2018).…”

Section: Introductionmentioning

confidence: 99%

“…SPI films with moderate mechanical properties and excellent oxygen and oil barrier properties can be applied to food packaging and coating (Han, Yu, & Wang, 2018). However, because they are usually used and stored under different environmental conditions, SPIs often show tensile strength, elongation at break, oxygen resistance, water resistance, and other mechanical properties that are associated with poor stability (Xia et al, 2016). Generally, the mechanical properties of SPI films decrease by approximately 42% over a storage period of 2-3 months, making it impossible to use them widely in practice (Srikiatden, & Roberts, 2007).…”

Section: Introductionmentioning

confidence: 99%

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Mechanical property stability of soy protein isolate films plasticized by a biological glycerol‐based polyester and application in the preservation of fresh‐cut apples

Cao

et al. 2018

J Food Process Preserv

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Soy protein isolate (SPI) film is a newly developed material used for packaging. However, its application has long been quite limited due to its poor mechanical property stability during storage. In our study, a biological glycerol‐based polyester (bio‐poly glycerol: adipic acid = 1:2 (BGP I), 1:1 (BGP II), and 2:1 (BGP III); w/w) is used as a plasticizer to enhance mechanical properties. These films were evaluated for tensile strength (TS), elongation at break (EB), water vapor permeability (WVP), moisture content (MC), glycerol emigration rate, oxygen permeability (OP), and contact angle (CA) and the morphologies of the films were visualized with a scanning electron microscope (SEM) and an atomic force microscope (AFM) for 60 days at 25°C. The TS of SPI‐BGP I, SPI‐BGP II, and SPI‐BGP III films increased by 12.94%, 18.22%, and 7.93%, respectively, and the EB increased by 23.63%, 37.27%, and 20.33%, respectively, compared to the films plasticized by glycerol. The stability of the WVP, MC, glycerol emigration rate, and OP of the films also increased, and a higher CA indicated a higher hydrophobicity in the films. The SEM and AFM images indicated that the films with BGP could form better cross‐links, so the inner structure of the film was still relatively complete and compact after storing for a period of time. The application experiments showed that the SPI‐BGP films had a good control effect on the browning reaction, effectively prohibiting the growth of microorganisms in fresh‐cut apples and extending the shelf life for at least 23 days compared to the control SPI films. Thus, the addition of a biological glycerol‐based polyester greatly broadens the applications for a SPI film. Practical applications The present study shows the mechanical property stability of SPI films plasticized by a BGP. The study also shows the application of BGP‐SPI films in the preservation of fresh‐cut apples. From the application point of view, this work could facilitate the application of SPI films on fresh‐cut fruits and various foods. Moreover, the study is helpful in understanding the cause and the mechanism of mechanical properties’ decline of SPI films during storage as well as providing help for other researchers in this field.

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“…Crosslinking is a particularly effective approach for enhancing adhesion properties. Currently, aldehydes, epoxy compounds, natural gellan, and genipin are the most commonly used crosslinkers to form intrapenetrating or interpenetrating networks with a soy‐protein matrix . When the crosslinked adhesive is used under humid conditions, the uniform and tough network limits the permeation of water molecules and, thus, improves the adhesion performance.…”

Section: Introductionmentioning

confidence: 99%

High bonding strength and boiling water resistance of soy protein‐based adhesives via organosilicon–acrylate microemulsion and epoxy synergistic interfacial enhancement

Zhao

Xing

Wang

et al. 2017

J of Applied Polymer Sci

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Boiling water resistance, an important indicator of wood adhesives, represents the capability of adhesives for exterior woodwork applications. However, soy-based adhesives show poor behaviors in this respect, which limit their applications in outdoor environments. In this article, we report a synergistic modification method of integrating a cocrosslinking system of epoxied polyamideamine-epichlorohydrin (PAE) and organosilicon-acrylate copolymer latexes (OACLs) to improve soybean meal (SM)-based adhesive properties. Tailored PAE and OACL SM-based adhesives demonstrated robust crosslinking structures via multi-interfacial interactions, where PAE and OACL served as building blocks of an interpenetrating network, which was characterized by Fourier transform infrared spectroscopy, X-ray diffraction, thermogravimetric analysis, and scanning electron microscopy. The dry-shear strength, wet-shear strength, and boiling water strength of the resulting SM-based adhesives were 1.41 6 0.13, 1.32 6 0.17, and 1.20 6 0.11 MPa, respectively, with 15 wt % OACL loading; these were 41, 45, and 90% increases, respectively, over the SM-PAE adhesive with which we compared them. Most importantly, the excellent boiling water resistance of the adhesives make them practical for exterior plywood.Crosslinking is a particularly effective approach for enhancing adhesion properties. Currently, aldehydes, epoxy compounds, natural gellan, and genipin are the most commonly used crosslinkers to form intrapenetrating or interpenetrating networks with a soy-protein matrix. 3,4,17 When the crosslinked adhesive is used under humid conditions, the uniform and tough network limits the permeation of water molecules and, thus, improves the adhesion performance. For example, Li and coworkers 18,19 designed a series of soy protein-based adhesives consisting of a covalently crosslinked polyamideamine-epichlorohydrin (PAE) network and a physically crosslinked attapulgite or carboxylated styrene-butadiene rubber latex network between soy-protein matrixes. The boiling water strength of these adhesives ranged V C 2017 Wiley Periodicals, Inc.

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Property enhancement of soy protein isolate-based films by introducing POSS

Cited by 55 publications

References 37 publications

Preparation and Characterization of All-Biomass Soy Protein Isolate-Based Films Enhanced by Epoxy Castor Oil Acid Sodium and Hydroxypropyl Cellulose

Preparation and Characterization of All-Biomass Soy Protein Isolate-Based Films Enhanced by Epoxy Castor Oil Acid Sodium and Hydroxypropyl Cellulose

Mechanical property stability of soy protein isolate films plasticized by a biological glycerol‐based polyester and application in the preservation of fresh‐cut apples

High bonding strength and boiling water resistance of soy protein‐based adhesives via organosilicon–acrylate microemulsion and epoxy synergistic interfacial enhancement

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