Improved flexibility and water resistance of soy protein thermoplastics containing waterborne polyurethane

Tian, Huafeng; Wang, Yixiang; Zhang, Lina; Quan, Changyun; Zhang, Xian‐Zheng

doi:10.1016/j.indcrop.2010.02.009

Cited by 99 publications

(78 citation statements)

References 31 publications

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“…SPI/PPG-based WPU blend films also showed decreased tensile strength (from 9 to 3 MPa), decreased Young's modulus (from 110 to 10 MPa), increased elongation at break (from 71 to 365 %), and improved water resistance as the WPU content increased from 0 to 50 % [32]. The blend films had lower cytotoxicity than WPU films, which might be attributed to the hydrolysis of soy protein which provided nutrition for the cell cultured in the media [32]. A potential application as a biomedical material was suggested for the SPI/PPG-based WPU blend films.…”

Section: Blend Films/coatingsmentioning

confidence: 99%

“…With increasing PU content, the blend films showed decreased tensile strength and Young's modulus, while the elongation at break increased and the thermal stability and water resistance improved [31]. Waterborne polyurethanes (WPUs) are promising alternatives, which have environmentally friendly features compared to solvent-borne PUs, and have attracted much attention for the preparation of protein/PU blend films or coatings [32][33][34][35][36]. Blend films from an SPI alkaline solution and polypropylene glycol (PPG)-based anionic WPU exhibited high transparency and good compatibility as a result of strong hydrogen-bond interactions [32].…”

Section: Blend Films/coatingsmentioning

confidence: 99%

“…Waterborne polyurethanes (WPUs) are promising alternatives, which have environmentally friendly features compared to solvent-borne PUs, and have attracted much attention for the preparation of protein/PU blend films or coatings [32][33][34][35][36]. Blend films from an SPI alkaline solution and polypropylene glycol (PPG)-based anionic WPU exhibited high transparency and good compatibility as a result of strong hydrogen-bond interactions [32]. SPI/PPG-based WPU blend films also showed decreased tensile strength (from 9 to 3 MPa), decreased Young's modulus (from 110 to 10 MPa), increased elongation at break (from 71 to 365 %), and improved water resistance as the WPU content increased from 0 to 50 % [32].…”

Section: Blend Films/coatingsmentioning

confidence: 99%

“…Blend films from an SPI alkaline solution and polypropylene glycol (PPG)-based anionic WPU exhibited high transparency and good compatibility as a result of strong hydrogen-bond interactions [32]. SPI/PPG-based WPU blend films also showed decreased tensile strength (from 9 to 3 MPa), decreased Young's modulus (from 110 to 10 MPa), increased elongation at break (from 71 to 365 %), and improved water resistance as the WPU content increased from 0 to 50 % [32]. The blend films had lower cytotoxicity than WPU films, which might be attributed to the hydrolysis of soy protein which provided nutrition for the cell cultured in the media [32].…”

Section: Blend Films/coatingsmentioning

confidence: 99%

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Polyols and Polyurethanes from Protein-Based Feedstocks

Luo

2015

SpringerBriefs in Molecular Science

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Feedstocks that have high protein contents, such as soy protein, are promising materials for extensive polyol and polyurethane (PU) applications, such as foams, films, and coatings, due to the characteristic structures and properties of proteins. Currently, most research has been focused on the direct use of these protein-based feedstocks in combination with polymers for PU production. Although proteins have multiple reactive functional groups, such as amino and carboxyl groups, reports on the modification of protein-based feedstocks for the production of liquid polyols are limited. This chapter reviews sources, compositions, structures, and processing of protein-based feedstocks; synthetic methods and properties of protein-based polyols; and performance and applications of the derived PUs.

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Section: Blend Films/coatingsmentioning

confidence: 99%

Section: Blend Films/coatingsmentioning

confidence: 99%

Section: Blend Films/coatingsmentioning

confidence: 99%

Section: Blend Films/coatingsmentioning

confidence: 99%

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Polyols and Polyurethanes from Protein-Based Feedstocks

Luo

2015

SpringerBriefs in Molecular Science

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“…It is important to notice that the neat, zein thermoplastic blends showed higher modulus than neat, albumin thermoplastic blends, suggesting a strong protein-protein interactions. The significant loss of modulus in the thermoplastic blends at 35 % and above of LDPE may be due to zein being the main load bearing constituent of the thermoplastic blend, and with more LDPE (which exhibits low modulus), the load bearing capabilities of the resulting blends will decrease [41]. When the extension of the thermoplastic blend is examined, there is a slight decrease in the extendibility of the thermoplastic blend when LDPE is added, until it consists of at least 50 % LDPE.…”

Section: Mechanical Properties Of Albumin Plastic Blends and Zein Plamentioning

confidence: 99%

Thermoplastic Blends from Albumin and Zein: Plastic Formation and Mechanical Properties Including Modeling

Jones

Sharma

2016

J Polym Environ

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The use of proteins in blending with traditional polymers in the formation of thermoplastics can produce plastics with properties that are superior to traditional petroleum-based plastics. We investigated the physical and thermal properties of albumin and zein thermoplastic blends plasticized with glycerol and mixed with varying amounts of low-density polyethylene (LDPE). Several mechanical models were utilized to determine how tensile properties will be altered when varying amounts of protein/ LDPE were added into the thermoplastic blend. When analyzed for thermal properties, we found that as the amount of LDPE in the thermoplastic blend increased, the resulting plastic possessed thermal properties that were more similar to pure LDPE plastics. In terms of mechanical properties, comparison between the experimental data and model predictions points to a synergistic effect between albumin and LDPE that leads to higher modulus, while a potential lack of compatibility between zein and LDPE leads to a plastic with lower modulus. Based on our results, the use of albumin and zein proteins when blended with LDPE in the production of thermoplastics has potential use in the areas of medical and food packaging applications.

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