Mechanical properties improvement of thermoplastic corn starch and polyethylene-grafted-maleicanhydride blending by Na+ ions neutralization of carboxymethyl cellulose

2018 ◽  
Vol 120 ◽  
pp. 297-301 ◽  
Author(s):  
Kittisak Jantanasakulwong ◽  
Somchai Wongsuriyasak ◽  
Pornchai Rachtanapun ◽  
Phisit Seesuriyachan ◽  
Thanongsak Chaiyaso ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Na Ions

scholarly journals Corn Starch Reactive Blending with Latex from Natural Rubber in Presence of Na+ Ions of Carboxymethyl Cellulose as a Catalyst

2021 ◽  
Author(s):  
Noppol Leksawasdi ◽  
Thanongsak Chaiyaso ◽  
Pornchai Rachtanapun ◽  
Pensak Jantrawut ◽  
Warintorn Ruksiriwanich ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Contact Angle ◽  
Natural Rubber ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Carboxyl Groups ◽  
Reactive Blending ◽  
Swelling Properties ◽  
Elongation At Break ◽  
Na Ions

Abstract Corn starch (CS) was blended with glycerol, latex natural rubber (LNR), and carboxymethyl cellulose (CMC). The addition of 10 phr of CMC improved the Young’s modulus (6.7 MPa), tensile strength (8 MPa), and elongation at break (80%) of the CSG/LNR blend. The morphology of the CSG/LNR/CMC blends showed a uniform distribution of LNR particles (1–3 µm) in the CSG matrix. The addition of CMC enhanced the swelling ability and water droplet contact angle of the blends owing to the swelling properties, interfacial crosslinking, and amphiphilic structure of CMC. Fourier transform infrared spectroscopy confirmed the reaction between the C=C bond of LNR and the carboxyl groups (–COO-) of CMC, in which Na+ ions in CMC acted as a catalyst. Notably, the mechanical properties of the CSG/LNR/CMC blend were improved owing to the miscibility of CSG/CMC and the CMC/LNR interfacial reaction.

scholarly journals Corn starch reactive blending with latex from natural rubber using Na+ ions augmented carboxymethyl cellulose as a crosslinking agent

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Noppol Leksawasdi ◽  
Thanongsak Chaiyaso ◽  
Pornchai Rachtanapun ◽  
Sarinthip Thanakkasaranee ◽  
Pensak Jantrawut ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Natural Rubber ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Crosslinking Agent ◽  
Medical Applications ◽  
Reactive Blending ◽  
Swelling Properties ◽  
Elongation At Break ◽  
Na Ions

AbstractA mixture of corn starch and glycerol plasticizer (CSG) was blended with latex natural rubber (LNR) and carboxymethyl cellulose (CMC). The addition of 10 phr of CMC improved the Young’s modulus (6.7 MPa), tensile strength (8 MPa), and elongation at break (80%) of the CSG/LNR blend. The morphology of the CSG/LNR/CMC blends showed a uniform distribution of LNR particles (1–3 µm) in the CSG matrix. The addition of CMC enhanced the swelling ability and water droplet contact angle of the blends owing to the swelling properties, interfacial crosslinking, and amphiphilic structure of CMC. Fourier transform infrared spectroscopy confirmed the reaction between the C=C bond of LNR and the carboxyl groups (–COO−) of CMC, in which the Na+ ions in CMC acted as a catalyst. Notably, the mechanical properties of the CSG/LNR/CMC blend were improved owing to the miscibility of CSG/CMC and the CMC/LNR interfacial reaction. The CSG/LNR/CMC biodegradable polymer with high mechanical properties and interfacial tension can be used for packaging, agriculture, and medical applications.

scholarly journals Author Correction: Corn starch reactive blending with latex from natural rubber using Na+ ions augmented carboxymethyl cellulose as a crosslinking agent

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Noppol Leksawasdi ◽  
Thanongsak Chaiyaso ◽  
Pornchai Rachtanapun ◽  
Sarinthip Thanakkasaranee ◽  
Pensak Jantrawut ◽  
...  
Keyword(s):  
Natural Rubber ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Crosslinking Agent ◽  
Reactive Blending ◽  
Na Ions

A Novel Modified Starch/Carboxymethyl Cellulose/Montmorillonite Bionanocomposite Film: Structural and Physical Properties

2013 ◽  
Vol 10 (1) ◽  
pp. 121-130 ◽  
Author(s):  
Babak Ghanbarzadeh ◽  
Hadi Almasi ◽  
Seyed Amir Oleyaei
Keyword(s):  
Mechanical Properties ◽  
Carboxymethyl Cellulose ◽  
Corn Starch ◽  
Water Vapor Permeability ◽  
Vapor Permeability ◽  
Modified Starch ◽  
Force Microscopy ◽  
Atomic Force ◽  
Bionanocomposite Films ◽  
Starch Films

Abstract A novel glycerol-plasticized and citric acid (CA)-modified starch/carboxymethyl cellulose (CMC)/montmorillonite (MMT) bionanocomposite films were prepared from corn starch by casting, to study the effect of the 10% CA, 10% CMC and four different loadings of MMT on the properties of starch films. Atomic force microscopy surface analysis showed that starch/CMC/MMT films had the highest roughness. X-ray diffraction test showed that the clay nanolayers formed an intercalated structure in the bionanocomposites. However, completely exfoliated structure formed only in the pure starch/MMT nanocomposites (without CA and CMC). CA, CMC and MMT improved mechanical properties of starch films. MMT had the greatest effect on the mechanical properties. The MMT addition at content of 7% caused to increase in ultimate tensile strength by more than threefold in comparison to modified starch/CMC films. The water vapor permeability (WVP) decreased significantly (p < 0.05) by the addition of CA and CMC. When the MMT content of the starch films reached to 7%, the WVP decreased about 75% in comparison to the neat starch film. However, the hydrophilic character of bionanocomposites increased as the increasing of MMT content.

Rapid production of corn starch gels with high mechanical properties through alcohol soaking

2020 ◽  
Vol 163 ◽  
pp. 1557-1564
Author(s):  
Qi Sun ◽  
Peng Li ◽  
Yang Li ◽  
Na Ji ◽  
Lei Dai ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corn Starch ◽  
Rapid Production ◽  
Starch Gels

scholarly journals Improvement of mechanical properties of orodispersible hyaluronic acid film by carboxymethyl cellulose addition

2020 ◽  
Vol 29 (9) ◽  
pp. 1233-1239 ◽  
Author(s):  
Seulki Kim ◽  
Dong-Hwa Cho ◽  
Dong-Keon Kweon ◽  
Eun-Hee Jang ◽  
Joo-Yeon Hong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Hyaluronic Acid ◽  
Carboxymethyl Cellulose

scholarly journals DLP 3D Printing Meets Lignocellulosic Biopolymers: Carboxymethyl Cellulose Inks for 3D Biocompatible Hydrogels

Polymers ◽  
2020 ◽  
Vol 12 (8) ◽  
pp. 1655 ◽  
Author(s):  
Giuseppe Melilli ◽  
Irene Carmagnola ◽  
Chiara Tonda-Turo ◽  
Fabrizio Pirri ◽  
Gianluca Ciardelli ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Additive Manufacturing ◽  
3D Printing ◽  
Carboxymethyl Cellulose ◽  
Biomedical Applications ◽  
Digital Light Processing ◽  
Chemically Modified ◽  
Significant Step ◽  
3D Printed ◽  
Biomedical Field

The development of new bio-based inks is a stringent request for the expansion of additive manufacturing towards the development of 3D-printed biocompatible hydrogels. Herein, methacrylated carboxymethyl cellulose (M-CMC) is investigated as a bio-based photocurable ink for digital light processing (DLP) 3D printing. CMC is chemically modified using methacrylic anhydride. Successful methacrylation is confirmed by 1H NMR and FTIR spectroscopy. Aqueous formulations based on M-CMC/lithium phenyl-2,4,6-trimethylbenzoylphosphinate (LAP) photoinitiator and M-CMC/Dulbecco’s Modified Eagle Medium (DMEM)/LAP show high photoreactivity upon UV irradiation as confirmed by photorheology and FTIR. The same formulations can be easily 3D-printed through a DLP apparatus to produce 3D shaped hydrogels with excellent swelling ability and mechanical properties. Envisaging the application of the hydrogels in the biomedical field, cytotoxicity is also evaluated. The light-induced printing of cellulose-based hydrogels represents a significant step forward in the production of new DLP inks suitable for biomedical applications.

Compatibilization of Polypropylene/Corn Starch Plasticized with Diethanol Amine

2012 ◽  
Vol 610-613 ◽  
pp. 475-479
Author(s):  
Jia Hao Qiu ◽  
Pin Gan Song ◽  
Shen Yuan Fu ◽  
Xian Xun Ge ◽  
Bing Huang ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Corn Starch ◽  
Intermolecular Hydrogen Bonding ◽  
Starch Granules ◽  
Reactive Compatibilization ◽  
Hydrogen Bonding Interactions ◽  
Potential Applications ◽  
Plasticized Starch ◽  
Reduction Effect

In the presented paper, diethanol amine is employed to plasticize corn starch, and plasticized starch is incorporated into polypropylene to create semibio-based composites with the aid of compatibilizer, maleic anhydride-grafted PP (PPMA). Compared with PP/starch blend, the presence of diethanol amine changes the morphology and increases the plasticity of starch due to the reduction effect of intermolecular hydrogen bonding interactions. Adding PPMA could reduce the dispersed size of starch granules in the polymer matrix due to in situ reactive compatibilization. Addition of 30 wt% PPMA decreases the starch granules size from ~10 μm to ~5 μm, and increases the tensile strength from 16 MPa for PP/plasticized starch to 30 MPa, increased by 87.5%. Thus, as-created bio-composites with improved mechanical properties will find many potential applications such as packaging.

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