Application of wheat B-starch in biodegradable plastic materials

Šárka, Evžen; Kruliš, Zdeněk; Kotek, Jiřı́; Růžek, L.; Korbářová, A.; Bubník, Z.; Růžková, M.

doi:10.17221/292/2010-cjfs

Cited by 19 publications

(14 citation statements)

References 35 publications

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“…Commercial acetylated potato starch (PS) “Solvarin OBV” of DS 0.04 and dry substance 82.5% was provided by the Škrobárny Pelhřimov starch company (Czech Republic). Acetylated wheat B‐starch of DS 1.4 was prepared in the laboratory as described by Šárka et al 19 (N‐content 0.23%, 90.4% of acetylated starch in dry substance). The mean average diameter of milled aggregates was 8.7 µm, as determined by image analysis and the dry substance was 95.8%.…”

Section: Methodsmentioning

confidence: 99%

Spectral analysis and physical properties of benzylated starch

et al. 2012

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A-and B-wheat starch (in native or acetylated form) and potato starch (slightly acetylated) were subjected to benzylation with benzylchloride in various reaction conditions and at various reaction times (40-1008C, 1-90 h). Modified and original starches were characterized by elemental analysis and spectroscopic methods (FT-IR and 1H NMR). The semicrystalline or amorphous character was indicated by X-ray powder (XRD) patterns. Rheological properties of benzyl starch of DS $ 1 were measured by small amplitude oscillation shear rheology (SAOS) using the rheometer Haake Rheostress RS 80. The results indicated predominantly elastic behavior because the storage modulus was higher than the loss modulus over the whole frequency range; it corresponded to a true gel. The storage and loss moduli increased with increasing frequency while the tangent of phase did not change and was approximately d ¼ 408.

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Section: Methodsmentioning

confidence: 99%

Spectral analysis and physical properties of benzylated starch

et al. 2012

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“…Campos et al observed increases in tensile strength, elongation at break, and elasticity modulus of SPCL composites after UV irradiation. Sarka et al reported an increase in elastic modulus and strength of PCL composites with acetylated starch in comparison with those of composites obtained from native starch. According to Yavuz and Babaç, crosslinked starch composited with PCL shows improved tensile strength and elongation at break.…”

Section: Properties Of Spcl Compositementioning

confidence: 99%

Polycaprolactone/starch composite: Fabrication, structure, properties, and applications

Ghavimi

Ebrahimzadeh

Solati‐Hashjin

et al. 2014

J. Biomed. Mater. Res.

102

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Interests in the use of biodegradable polymers as biomaterials have grown. Among the different polymeric composites currently available, the blend of starch and polycaprolactone (PCL) has received the most attention since the 1980s. Novamont is the first company that manufactured a PCL/starch (SPCL) composite under the trademark Mater-Bi®. The properties of PCL (a synthetic, hydrophobic, flexible, expensive polymer with a low degradation rate) and starch (a natural, hydrophilic, stiff, abundant polymer with a high degradation rate) blends are interesting because of the composite components have completely different structures and characteristics. PCL can adjust humidity sensitivity of starch as a biomaterial; while starch can enhance the low biodegradation rate of PCL. Thus, by appropriate blending, SPCL can overcome important limitations of both PCL and starch components and promote controllable behavior in terms of mechanical properties and degradation which make it suitable for many biomedical applications. This article reviewed the different fabrication and modification methods of the SPCL composite; different properties such as structural, physical, and chemical as well as degradation behavior; and different applications as biomaterials.

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“…Starch-based materials are attractive due to their biodegradability and wide range of applications, such as packaging, coating, agriculture, medicine, pharmacy, or even optoelectronics (Sarka et al, 2011(Sarka et al, , 2012Saiah et al, 2012;Xie et al, 2013;Ghavimi et al, 2015;Oleyaei et al, 2016a;Campos-Requena et al, 2017;Dufresne and Castano, 2017;Javanbakht and Namazi, 2017;Kuswandi, 2017;Liu G. et al, 2017;Liu S. et al, 2017;Sarka and Dvoracek, 2017, Ilyas et al, 2018, Ilyas et al, 2019. However, the melting temperature of native starch is higher than its degradation temperature.…”

Section: Introductionmentioning

confidence: 99%

Thermoplastic Starch Composites With Titanium Dioxide and Vancomycin Antibiotic: Preparation, Morphology, Thermomechanical Properties, and Antimicrobial Susceptibility Testing

et al. 2020

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Biodegradable composites of thermoplastic starch (TPS), titanium dioxide particles (TiO 2 ; average size 0.2 µm), and/or antibiotic (ATB; vancomycin) were prepared. Light and electron microscopy demonstrated that our recently developed, two-step preparation procedure yielded highly homogeneous TPS matrix with well-dispersed TiO 2 particles even for high filler concentrations (up to 20%). Oscillatory shear rheometry showed an increase in viscosity of TPS after addition of TiO 2 and ATB (from ca 2 × 10 5 Pa·s to ca 1 × 10 6 Pa·s at 1 rad/s and 120 • C). However, the high viscosity of TPS/TiO 2 /ATB composites did not prevent reproducible preparation of the composites by melt-mixing. Dynamic mechanical analysis proved a significant increase in shear moduli (storage, loss and complex modulus) of TPS after addition of TiO 2 and ATB (storage modulus increased from ca 25 MPa to more than 600 MPa at 1.33 rad/s at room temperature). Both rheological and mechanical properties indicated strong interactions among TPS matrix, filler, and antibiotics. The final TPS composites were soft enough to be cut with a sharp blade at room temperature, the TPS matrix was fully biodegradable, the TiO 2 filler was biocompatible, and the ATB could be released locally during the matrix degradation. Selected samples were tested for bacterial susceptibility using standard tube dilution test and disk diffusion test. The results proved that the ATB retained its bacteriostatic properties after the thermal processing of the composites. Therefore, the prepared TPS/TiO 2 /ATB composites represent a promising material for biomedical applications related to the local release of antibiotics.

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Application of wheat B-starch in biodegradable plastic materials

Cited by 19 publications

References 35 publications

Spectral analysis and physical properties of benzylated starch

Spectral analysis and physical properties of benzylated starch

Polycaprolactone/starch composite: Fabrication, structure, properties, and applications

Thermoplastic Starch Composites With Titanium Dioxide and Vancomycin Antibiotic: Preparation, Morphology, Thermomechanical Properties, and Antimicrobial Susceptibility Testing

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